LEPIDOPTERA HETEROCERA. 1133 



Body stout, pilose ; the hairs flat. Proboscis very short or ob- 

 solete. Palpi porrect, stout, pilose, extending beyond the head ; 

 second joint very much more than twice the length of the first; 

 third minute, short, conical. Abdomen hardly extending as far as 

 the hind wings, or somewhat beyond them. Legs, including the 

 tarsi, stout, deeply ciliated ; hind tibiae with two small apical spurs. 

 Wings moderately broad. Fore wings almost straight along the 

 costa, slightly rounded at the tips, oblique and very slightly convex 

 along the exterior border ; second inferior vein about four times 

 further from the third than from the first ; third more than twice 

 further from the fourth than from the second. Male.— Antennae 

 rather deeply pectinated for about one-fourth of the length from the 

 base, serrated from thence to the tips, rather more than half the 

 length of the body. Female. — Antennae simple, not more than half 

 the length of the body. Wings rather broader than those of the 

 male ; exterior border less oblique. 



South America. 



A. Alae anticae flavo guttatae. "■■""." trimacula, Anon. 



B. Alae anticae immaculatae. - fumosa, Walk. 



C. Alae anticae argenteo variae. - argentata, Walk. 



D. Alae anticae fascia flava. - Plugma, Anon. 



E. Alae anticae linea albida. - * vidua, Anon. 



F. Alae anticae nigro strigatae et unifasciatae. - dicolon, Anon. 



1. Nyssia trimacula. 



Mas et foem. Rufo-fusca; abdomen et alee posticce pallidiora ; 

 alee antica macula trigona lituraque Jlavido-albis. 



Phalaena-Bombyx trimacula, Anon, Ins. Surin. i. pi. 45. 



Dark reddish brown. Abdomen and hind wings pale reddish 

 brown. Fore wings glossy, with a yellowish white triangular spot in 

 the disk at one-fourth of the length, and an oblique subclavate yel- 

 lowish white mark near the costa at two-thirds of the length ; under 

 side pale reddish brown. Male. — Antennae testaceous. Female. — 

 Antennae reddish brown. Length of the body 7 — 8 lines; of the 

 wings 16 — 22 lines. 



Var. /3. Fore wings with two yellowish white dots instead of 

 the mark, the one behind the other. 



PART V. *2 I 



