Number of Instars: Exnviae, representing four different instars, were found clinging to the ventral surface of the aster leaves during August. This material seems to indicate five instars, but the cast-off delicate skins of the younger nymphs were badly mutilated and in no condition for a drawing or detailed descrip tion. The cast-off skins of the last three instars were very common and many were in almost perfect condition. Although T have assumed five instars, I am not positive whether there are four or five nymphal stages.
Second Instar?: Antennae stout, clothed with a few long setae, the third segment about a third longer than the fourth. Head with five slender bristle-like spines. The spines along the margins of the thorax and abdomen, also median erect ones, slender and bristle-like. The spines on the head are located in this instar and also in the others as in the adult insect. The spines on the thorax and abdomen are placed as in the two following instars (the position and location described in next instar), but some are wanting in the last instar. Some of the bristle-like spines on the abdomen are double (two arising from almost the same base). Nine abdominal segments visible above. General color testaceous, with very few or no brownish markings.
Third Instar? (Plate IV, Pig. 1c): Cephalic spines moderately long blunt, the median one usually a little longer than the others. Antennae stout, the third segment about one and three-fourths times the length of the fourth. Outer margins of pro-, Ines°, and metathorax on each side armed with a long spine; the middle of both pro- and mesothorax with an erect spine on each side of the median line. Abdominal segments two, three, four, five, six, seven and eight armed on each side near the postero-outer margin with a long spine, the ninth segment with two long spines; segments two, five, six and eight each armed with an erect spine on the median line, usually two or three or all these spines with a double pointed tip. The spines in this instar are rather stout and blunt. Length, 1.1 mm. General color testaceons, with a few small brownish spots.
Fourth Instar? (Plate IV, Fig. : Spine on head thorax and abdomen arranged as in the preceding instar, but all much longer and pointed. Body and spines sparsely clothed with moderately short spine-like structures with a bulbous or knobed tip. Antennae with the third segment a little less than twice as long as the fourth. Mesothorax distinctly larger than in the preceding instar. Length, 1.65 mm. General color testaceous, with small brownish areas at the base of some of the spines. Spines more or less brownish.
Last Instar (fifth?) (Plate IV, Fig. f) : In this stage the spines on the head and thorax are longer than in the preceding instar. structures with bulbous tips arc also a little longer and more numerous. (Plate IV, Figs. h and i.) Pronotum
large, the posterior process subtruncate. Mesothoracic wing pads large, somewhat leaf-like, projecting on the fifth abdominal seg ment and completely covering the metathorax and metathoracie wing pads. Abdominal segments two and three with the marginal spines wanting, also spines along margin of metathorax. Spines along the median line of the pro- and mesothorax and median spines of abdomen, especially prothoracic ones, with raised some what bulbous areas at the base. Antennae slender, clothed with several setae, the second segment twice the length of the fourth. Occasionally, one of the spines on the head or abdomen are double (two spines arising from almost the same base). A couple speci mens in both the fourth and fifth instars have been found with an extra spine on the head (six spines) and one or two extra on the abdomen. As a rule, however, the number of spines seem to be quite constant. Length, 2.8 mm. General color testaceons, varie gated with brown or fuscous. Spines more or less brownish.
The adult of Galeatzts peckhami is only known to occur in the macropterous form. Several Palaearctic species are found in both brachypterous and macropterous forms. The head normally bears five long spines and it is very rare that one finds an indi vidual with six spines. The posterior extension of the pronotum is somewhat inflated and the median caring is well developed. The hood is rather high, not broad and covers the base of the head.
The lateral ca mine are enormously developed, somewhat ovoid in outline and form sort of a distal hood-like structure. They extend considerably above the median earina, with the front margins in contact with each other, the posterior ones distinctly separated, and each constricted near the middle above. The areolae of the hood, carinae, paranota, posterior extension of pronotum and elytra are very large. The nervures are brownish or fuscous, the areolae are mostly hyaline, sometimes a few slightly clouded. The length varies from 4.2 mm. to 4.5 mm.
Four predaceous insects, Podislis serieveRtris Podisus modest as Dall., Nabis rufusculus Rent. and Nab is ra§cipennis Rent. were collected on the same plants with G. peckhami. In fact the eggs of Nabis rufuscul its were found in stems of the asters near the eggs of G. peckhami. Two associated forms, Macrotylus sex guttatu-s Prov. and an undetermined aphid, were feeding and breeding in considerable numbers on the same asters. The insect lives in dry and somewhat open places; it was only taken on the crest of this small hill and seemed to be very locally distributed. Tt is not know whether the adults survive the winter or not. Data seems to indicate that the winter is spent in the egg stage.