500 BRITISH LEPIDOPTERA. 



Mag.," ii., p. 72 (1782); Goze, "Ent. Beit.," hi.,' (2), p. 299(1779). Lasiocampa, Schrk., 

 " Fauna Boica," ii., Abth. 2, p. 154 (1802); Latr., "Genera, &c," iv., p. 218 (1809); 

 Meig., "Eur. Schmett.," ii., p. 199 (1830). Gastropacha, Ochs., " Die Schmett.," iii., 

 p. 289 (1810); Evers., "Fauna Volg.-UraL," p. 155 (1844); H.-Sch., "Sys. Bearb.," 

 ii., pp. 101, 108 (1847) ; Hein., " Schmett. Deutseh.," pp. 201, 210 (1859). Erio- 

 cjaster, Germ., " Prod. Sist. Bomb.," p. 16 (1811) ; Curt., " Guide," p. 142 (1829) ; 

 Stphs., "Illus. Haust.," ii., p. 44 (1828) ; " Cat. Brit. Ins.," p. 48 (1829); " List Br. 

 An. Br. Mus.," v., 1st ed., p. 46 (1850) ; 2nd ed., p. 43 (1856) ; Wood, " Ind. 

 Ent.," no. 47 (1839) ; Dup., " Cat. Lip. Eur.," p. 76 (1844); Humph, and Westd., 

 "Brit. Moths," 2nd ed., p. 52 (1851); Sta., "Man.," i., p. 154 (1857); Humph., 

 " Gen. Brit. Moths," p. 26 (1860) ; Rbr., " Cat. Lep. And.," p. 353 (1866) ; 

 Newm., " Brit. Moths," p. 42 (1869); Wallgrn., " Skand. Het.," ii., pp. 82, 84 (1869); 

 Bang-Haas, " Nat. Tids.," (3), ix.. p. 412 (1874); Guen., " Lep. Eure-et-Loir," 

 p. 80 (1875); Buekl., "Larvae," iii., p. 78 (1889); Auriv., " Nord. Fjar.," p. 62 

 (1889); "Iris," vii., p. 145 (1894); Strom, " Danm. Somm.," p. 81 (1891); Kirby, 

 "Cat.," p. 833 (1892); Beut., "Act. Soc. F. F. Fenn.," ix., p. 29 (1893); Meyr., 

 " Handbk.," p. 321 (1895) ; Tutt, " Brit. Moths," p. 59 (1896); " Proc. South Lond. 

 Ent. Soc," pp. 1-11 (1898); Barr., "Lep. Brit.," hi., pp. 8, 9 (1896); Dyar, "Can. 

 Ent.," xxx., pp. 3, 6 (1898); "Ent. Bee," xi., p. 142 (1899); Grote, "lllus. Zeits. 

 fur Ent.," hi., p. 71 (1898). Dasysoma, Hb., " Verz.," p. 185 (? 1822). 



Lachneis was the generic name given by Hiibner in his Tentamen, 

 p. 1, to catax, which he had already figured as Bombyx catax in his 

 Euroj). Schmett., pi. xxxviii., fig. 168. In the Verzeichniss, p. 185, he 

 correctly united everia and lanestris with catax in the same genus, but 

 renamed, the genus Dasysoma, which, therefore, became a synonym of 

 Lachneis. Stephens applied (lllus., ii., pp. 44-45) Germar's name 

 Eriogaster (belonging rightfully to the Eupterotid — processionea) to this 

 genus, and in this was followed by Duponchel, Rambur and Guenee. 

 Kirby, in order to retain Eriogaster, separates catax, L., rimicola, Hb., 

 and luteus, Oberth., under Lachneis, from lanestris under Eriogaster. 

 "We have already stated that we are unable to distinguish these two 

 sections generically, and it follows (anteh, p. 450), that Dasysoma, Hb., 

 and Eriogaster, Stephs. (nee Germar) are, in our opinion, synonyms of 

 Lachneis. Wallengren attempted (Skand. Het., ii., pp. 84-86) to 

 separate lanestris from catax and rimicola generically, by the neuration, 

 but Aurivillius, in discussing Wallengren's characters, states that he 

 finds that nervures 7 and 8 of the forewings are sometimes separated 

 in the same species, and at others united. The transverse nervure of 

 the middle cell of the hindwings is, indeed, in catax and rimicola, often 

 perfectly straight, but also sometimes, as in the rest of the species, 

 distinctly broken. The three closely allied species — lanestris, catax, 

 and rimicola — so far as the material in the British Museum collection is 

 concerned, afford several points of interest. L. lanestris extends in its 

 variation through various shades of reddish-brown in both sexes which are 

 largely of the same general coloration, except for the excess of grey on the 

 margins of the forewings in many $ examples. Of this species, the 

 greyest $ is from Sarepta, and in this specimen the normal reddish tint is 

 practically obsolete. The Carniolan specimens appear to closely 

 resemble the British forms, as also do those from Frankfort, whilst 

 those named arbusculae, from the Valais, are very little different, 

 the male, perhaps, slightly darker, and the female thinner scaled. 

 The reddest form is a German one (from Becker). The males and 

 females of L. rimicola are practically alike and uniform in their colora- 

 tion ; both are of a reddish tinge with much more orange in the tint 

 than occurs in the reddest L. lanestris. The basal mark is obsolete, the 

 transverse line also (on both fore- and hindwings), and the central 

 white spot is only weakly indicated. L. catax is much the finest species 



