Order HEM IPTER A. In this, and the remaining or ders, we must content ourselves with specifying the ge nera found in England, with occasional notices of the more remarkable species : Blatta, Gryllus, Fulgora, F. Europaa, very rare ; Cicada, C. sanguinolenta, found on the chalky and sandy soils near Dartford, the most beautiful of our Cicadae; Notoneeta, Nt1/2a, CiMC X C. lectularius, the common bug, was not known before the beginning of the 17th century; C. lestivus is not com mon; ..4phis, Chermes, Coccus, Thrifts.
Order LENDOPTERA. Genus Papilio : Of the 877 species, we possess nearly 70. P. machaon, the swallow tail, is found in great numbers in the meadows near Bris tol. P. hero is very abundant in the marshy parts of Lancashire, near Manchester. P. populi and P. antiopa are not common. The rarest of our species are P. si billa and P. camilla; the largest, P. papilla. Genus Sphinx: Of this we have 20 species ; S. atropos, the Jasmine hawkmoth, is the largest ; S. celerio, S fuci formis, S. zonata, and S. chrysorrhea, are very rare,—the last is found in Kensington Gardens in June ; S. api formis is found in Sussex. Genus Phalena, of the 1534 species which this genus contains, upwards of 300 are natives of England.
Order NEUROPTERA. Genus Libablia ; Of this we have 12 species; L. grandis is the largest, and is infe rior in bulk to no insect which this country produces. Genus Ephemera, nine species; E. vulgata is the largest. Genus Phryganea, 16 species ;. P. hirta is rare, but has been found at Oxford. Genus Hemerobiu•, 7 species. Genus Panorpa; of this only one species, P. communis, is known here. Genus Raphidia, two species.
Order HYMENOPTERA. Genus CynOs, nine species. Genus Tent/•edo, 19 species. Genus Sircx, three spe cies. Genus Ichneumon, 44 species. Genus Spher, six species ; S. spirifex has been found near Peterborough. Genus Tiphia, two species. Genus Chalets, one species. Genus Chrysi.s., four species. Genus respa, 11 species. Genus 4pis ; on the English species of this genus, Mr Kirby has written with minute, accurate, and extensive knowledge, and ascertained them to be even more nu merous than they were previously supposed to be. Ge nus Formica, four species. Genus Mutilla, one species.
Order D1PTER A. Genus Oestrus, five species. Ge nus Tipula, 32 species; T. Ponionx is very rare ; T. zonata has been found at Oxford. Genus Musca, 86 species ; M. semi•argentata has been found in Epping Forest. Genus Thbanus, six species. Genus Cu/cr, live species. Genus Ant/us, four species. Genus StOMO.ry8, three species. Genus Canons, four species. Genus ./si /us, 11 species; A. Crabinolormis is the largest, and A. forcipatus the most common species in England. Genus
Bombylius, three species. Genus Hippobosca, four spe cies.
Order A IrrElt A. Genus Lepisnia, two species; I.. sac charinum has been brought hither from America. Ge nus Podura, eight species. Genus Termes, two species. Genus Pediculus, 52 species. Genus P telex, one species. Genus .4carus, 24 species; A. autumnalis is not com mon, except in the chalky districts of Ilampshir;:, Surrey, Kent, Sussex, ikc. xv here it is called the harvest hug. Genus Hyd•achna, eight speci.-s. Genus Phulangium, seven species; P. grossipes and P. hirsutum have been chiefly found at Milford haven. Genus ?ranca, 18 spe cies ; A. aquatics is among the largest. Genus Cancer, 36 species ; C. salinus is found in the saltpans at Ly mington. Genus Monoculus, 10 species. Genus Onis cus, 10 species; 0. bidentatus has been found near Mil ford haven. Genus Scolopendra, four species. Genus Julus, four species.
Helminthology.
Respecting the class VERMES we must be brief, refer ring our readers for the third order in it, Testacea, to the article CONCHOLOGY. Order INTEs.rixA. Genus Ascaris, 66 species. Genus Trichocephalus, five Genus Uncinarca, two species. Genus Scolix, one species. Ge nus Ligula, two species. Genus Strongylus, two species. Genus Echinorynchus, 37 species. Genus Caryophyl I (sus, one species. Genus Linguatula, one species. Ge nus Fasciola, 32 species. Genus Teenia, 45 species ; 1'. soliurn is the most common. Genus Illyxine, one species. Genus Gordius, two species. Genus Lumbricus, four species; L. thallassema is found on the shores of Corn wall ; and L. oxyurus on the shores of Sussex. Genus Planaria, three species. Genus Sipunculus, two species. Genus Hirudo, eight species.
Order MoLLuscA. Genus Limax, six species; L. Ian ceolaris (if it may be considered a Limax) is found in the sea, off the coast of Cornwall. Genus A. depi lans is found in the sea about Anglesey. Genus Doris, four species. Genus Aphrodita, six species ; A. plana has been taken off Brighton. Genus Amphitrite, one species. Genus .Nercis, three species. Genus Nais, three species. Genus Aseidia, four species ; A. mammillaris is principally found off the coast of Cornwall. Genus .4ctinia, six species; A. caryophyllus is principally met with at 'teignrnouth ; A. sulcata on the rocks off the Cornish and \Velsh seas, and A. Dianthus on the rocks near Hastings. Genus Pedicellaria, one species. Genus Holothuria, one species. Genus Lernaea, four species. Genus Sepia, four species; S. sepiola is taken off the coast of Flintshire. Genus Medusa, five species; R1. octopus and simplex are principally taken off the coast of Cornwall. Genus Asturias, eight species; A. mem branacea is found at Weymouth.