302 INSECTA. 



The posterior extremity of the body is narrow in several ; they are 

 styled by Reaumur '^ chenilles en forme depoisson" Their cocoon 

 has the fig-ure of a bateau, and is sometimes of pure silk, and at others 

 mixed with foreign matters, 



The Tortrices compose the subgenus. 

 Pyralis, Fah* 



P. pomana. Fab.; Roes., Insect., I, Class IV, Pap. Noct. 

 xiii. Cinereous-grey; superior surface of the upper wings finely 

 striped with broAvn and yellowish, with a large spot of golden- 

 red. 



The caterpillar feeds on the seeds of the apple, and the female 

 deposits her eggs on their germ. 



P. vitis, Bosc, Mem. de la Soc. d'Agric, II, iv, 6. Superior 

 wings deep greenish, with three oblique, blackish bands, the last 

 terminal. 



Its caterpillar is very injurious in vineyards. 

 P. p7-asinana,Fc,h.; Roes., Insect., IV, x. The largest spe- 

 cies known; superior surface of the upper Avings light green, 

 Avith two oblique white lines. 



On the Oak, &c. Its caterpillar is one of those that Reaumur 

 compares to a fish. Its cocoon has the form of a batteau f . 

 The seventh section of the Nocturna, that of the Geometry — 

 Phalceniles, Lat.; P. geomeirce, L. — comprises Lepidoptera in which 

 the body is usually slender, the proboscis either nearly wanting, or 

 generally but slightly elongated, and almost membranous. The in- 

 ferior palpi are small, and almost cylindrical. The wings are ample, 

 extended, or tectifoim, and flattened. The antennae of several 

 males are pectinated. The thorax is always smooth. The caterpil- 

 lars usvially have but ten feet; the others present two more, and 

 those at the anus always exist. Their peculiar mode of progression 

 has caused them to be styled Arpenleuses, Geovietrce, or Meamrers. 

 When about to advance, they first cling with their anterior or squa- 

 mous feet, then elevate their body so as to form a ring, in order to 



* Cextain divisions establir^hed in our Gen. Crust, et Insect., IV, 230, divis. 2 

 and 11, it has appeared to us — Fam. Nat. du R^er. Anim., 476 — might be formed 

 into separate subgenera. 



Those species — Tortrix dentana Hiibn. — in T.liich the wings have a peculiar ap- 

 pearance, the upper ones being somewhat raised at the exterior margin, and inclined 

 on the opposite one, and of wliich the caterpillars have membranous feet of a pecu- 

 liar form, compai-ed by Reaumur to wooden legs, compose the subgenus Xyi.opoda. 

 Others — Pi/rulis rulana, vtnbeUnna, heradeana — in which the inferior palpi curve over 

 the head like horns, and terminate in a point, form that of the Volucrae — Yolucka. 



Finally, others again in whicli the wings are narrow jind elongated, and the infe- 

 rior palpi longer and salient, species which closely resemble the Crambi of Fabricius, 

 near which they must probably be placed, constitute a third subgenus, Procerata, 

 of which the Sytmlis saldonana, Fab., is the type. 



For the other species, see Fabricius and Hiibner. 



t MM, Lepeletier and Serville, with the Pynilis Godarti, previously described 

 by them, have formed the new genus Matkonula, differing from others of this 

 division in the following characters ; the labial palpi shorter than the head, with 

 rather indistinct and almost glabrous joints ; anterior co.xas strongly compressed, 

 and at least as long as the thighs. 



