176 HETEROCERA. 
of the genus fo, does not include any of Walker’s species, in all probability many of 
those he described as new had previously been named by Walker. The range of the 
genus is from the United States to South Brazil. 
The larva is known of many of the species; most of them are described as being 
furnished with branching spiny hairs, which, owing to their poisonous or urticating 
nature, cause considerable irritation or even wounds when handled. ‘The larve appear 
to be gregarious in their earlier stages and easy to rear. These large species of 
Saturniide are comparatively seldom captured in the perfect state; it is only by rearing 
the larve that many examples can be obtained. 
1. Automeris janus. 
Phalena Attacus janus, Cram. Pap. Exot. i. p. 100, t. 64. ff. a, B’. 
Bombyx janus, Fabr. Sp. Ins. ii. p. 169; Oliv. Enc. Méth., Ins. v. p. 27, 14, t. 69. f. 7. 
Automeris janus, Hiibn. Verz. bek. Schmett. p. 154. 
Saturnia metzli, Sallé, Rev. et Mag. Zool. 1853, p. 171, t. 5. £. 17. 
Hyperchiria metzli, Walk. Cat. vi. p. 1280°. 
Hyperchiria janus, Walk. loc. cit. p. 1284‘. 
Io janus, Boisd. Ann. Soc. Ent. Belg. xviii. p. 208°. 
fo mesili, Boisd. Ann. Soc. Ent. Belge, xviii. p. 208 °. 
Hab. Mexico *®, Orizaba’, Jalapa (Hoége); Guatemata*; Panama, Volcan de Chiriqui 
2000 to 3000 feet (Champion).—Gutana, Surinam 145, Cayenne, 
T am indebted to Mons. C. Oberthiir for the loan of the type of Saturnia metzlit ; 
I have compared it with a long series of specimens of A. janus, and cannot see any 
reason for separating it from that species. .4. janus varies to some extent in colour, 
but in no other respect, the Mexican specimens, as a rule, being much the palest.. The 
example from the State of Panama has the primaries a darker brown than the Mexican 
specimens, and agrees well with Cramer’s figure. 
M. Sallé? describes and figures the larva, and remarks upon the poisonous urticating 
nature of the branching spiny hairs with which it is furnished; he gives Platanus 
occidentalis and Erythrina rubra as food-plants. . 
2. Automeris junonia. 
Hyperchiria gunonia, Walk. Cat. xxxv. p. 1944 (¢)*. 
Hyperchiria titania, Feld. Reise Nov. Lep. t. 85. f. 8, Erkl. der Taf. 75 bis 107, p. 5 ()*. 
Hab. Centrat America (Salvin, mus. Felder) 2—Cotomsta, Bogota }. 
Walker’s type, now in my own collection, agrees well with Felder’s figure. 
3. Automeris rubrescens. 
Hyperchiria rubrescens, Walk. Cat. vi. p. 1281). 
Hab. Mexico, Jalapa (Hoge); Guaremata!; Honpuras (Dyson)1; Nicaragua, Chon- 
