no. i. BOMBYCINE MOTHS OF NORTH AMERICA— PACKARD. 141 



The wings are transparent, without the usual markings, no lines or discal spot; the veins 

 are naked and Japan-brown and are very distinct. The scales are dark brown and tawny, 

 rather long and hair-like on the inner edge of the hind wings. 



The genus is remarkable for the rather slender body, the large wings, transparent and scale- 

 less except on the edges, the naked very distinct veins, and for the two large tibial sense-sacks 

 on the fore legs. The antennae are almost exactly as in Hemileuca and it evidently is an 

 aberrant member of the family. Its larval history would be most interesting. 



Geographical distribution. — Restricted to Brazil. 



HELICONISA PAGENSTECKERI (Geyer). 



[Nyctemera-pagensteckeri Geyer, Samml. Ex. Schmett., Ill (1837?).] 

 [Beliconisa] impar Walker [Cat. Lep. Het. Br. Mus., VI (1855), p. 1334]. 

 [Heliconisd] impar Kirby, Syn. Cat. Lep. Het., I [p. 787]. 



Imago. — One <? . Body, antennae and veins Japan varnish in color. The wings of both 

 pairs transparent, nearly scaleless, with no spots, bars, lines, or any other markings. Costa 

 of the fore wings tawny on the basal half, brown beyond. Outer edge of both wings brown- 

 black, interrupted by tawny yellow spots at the ends of the veins. Beneath a rich golden 

 yellow tint along the costa of both wings; costa of hind wings more scaled than on fore wings. 



Expanse of fore wings, S 92 mm. 



Length of fore wings, <? 49 mm. 



Breadth of fore wing, <? 25 mm. 



Length of hind wings, <? 40 mm. 



Breadth of hind wing, $ 27 mm. 

 Geographical distribution. — Espiritu Santo, Brazil; Province of St. Paul, Brazil. 



PSEUDAPHELIA W. F. Kirby. 



[Pswdaphelia Kirby, Cat. Lep. Het., I (1892), p. 771.] 



[Aphelia Westwood, Proc. Zool. Soc. Lond., 1849, p. 61, preoccupied.] 



Heniocha Herrich-Schaeffer, Samml. Auasereur. Schmett., p. 60; 1855 [not of Hiibner]. 



Imago. — <? . Head with the front as in Heliconisa, but more squarish, it is hairy, but 

 the hairs are not so long as in Hemileuca and Pseudohazis. Eyes moderately large. Antennae 

 of 3 subplumose as in H. maia, but the branches are rather slender, and the joints are unusu- 

 ally long and slender; there is only a single pair to a joint, and they are well ciliated. Palpi 

 moderately large, extending beyond the front; second joint broad, and the third distinct but 

 short, with long hairs beneath. 



The wings are very thinly scaled, semitransparent; veins dark and distinct. Fore wings 

 rather short and broad, subrectangular at the apex; outer edge much shorter than the inner. 

 Hind wings round on the outer edge and on the apex; rather more produced at the inner angle. 



Fore tibial sack large, naked, as long as and wider than the fore tibiae; arising from 

 the base. 



The abdomen is rather slender, closely, finely scaled, only reaching halfway to the inner 

 angle of the hind wings. 



Markings: Wings thin, whitish; veins very distinct; ground color whitish. Fore wings 

 with two ocelli. One common linear scalloped submarginal line. Abdomen with close finer 

 scales, with a dorsal and lateral row of black dots. 



Geographical distribution. — Durban, Natal. [Abyssinia, according to Kirby]. 



This is a remarkable genus, the type of a group distinct from Heliconisa, and is the only 

 member of the family occurring beyond the limits of South America or the Neogaeic realm. 

 Although so aberrant, it seems to belong in the Hemileucidae, or at least may provisionally 

 be placed here. 



If it should prove to be a Hemileucid, it affords another instance of the relationship of the 

 South American and South African faunae. 



