36 ZYG^NIDiE AND BOMBYCIDiE 



The costal nervure is perfectly straight, sending off, immediately at 

 base, the upper discal nervure, which is slighter, nearly straight, and 

 throws off a nervule near external margin. Lower discal nervule 

 (median) nearly straight; the third median nervule springing from 

 the second, its origin further removed towards the external margin than 

 that of the first. Sub-median nervure curvilinear, much removed 

 from median ; internal nervure arising from the base of the wing, 

 straight, short. 



"The ornamentation is black, with sub-cyaneous abdominal and 

 alar shades ; the veins are black, regularly defining large white * 

 patches on both wings. The insect (G. Vermiculata) mimics the but- 

 terfly Stalachtis heliconoides, H. S. The thoracic and capital tegument, 

 when denuded of scales, is pitch black, shining, as are the veins. 

 Where the wing scales are black, the membrane beneath is of a pale, 

 blackish hue; where they are white it is pale yellowish. The pro- 

 thorax beneath, and the anterior femora above, are covered with 

 orange-yellow hairs, as in allied genera, but these do not spread on 

 the occiput above. 



"Allied to Qenucha, Kirby, than which I consider it of higher value. 

 In that genus, the 6 antennal pectinations are more numerous and 

 the stock longer. The palpi in Callalucia ( Gnophala, Walker, ) are 

 shorter, not so flexuous, and third article is differently shaped, though 

 somewhat similarly held. The nervulation differs much from Ctenu- 

 cha, since the third subcostal nervule is furcate; discal space open. In 

 Ctenucha, the posterior wings are seven-veined, first, second and third 

 nervules of the lower discal vein springing from one point, and the 

 costal and internal nervules are wanting. " 



Grok, Proc. Ent. Soc. Phil., vol. 4, p. 315. (1865.) 



The above diagnosis is drawn from G. vermiculata, and appeared 

 under the name of Callalucia, Grote, which equals Gnophccla, Walker. 



l.-GNOPHJELA VERMICULATA. (PI. 2, fig. l.) 



Omoiala vermiculata, Grote, Proc. Ent. Soc. Phil., vol. 2, p.334. ( 1 863.) 

 Laynprosoma vermiculata, Grote, Proc. Ent. Soc. Phil., vol. 2, pi. 6. 



fig. I, 6. (1863.) 

 Callalucia vermiculata, Grote, Proc. Ent. Soc. Phil., vol. 4, p. 3 1 6. (1865) 

 Gnophccla vermiculata, Grote, Trans. Am. Ent. Soc, vol. i , p. 33 2. ( 1 868) 



* White must be unintentional; both species are yellow. — R. H. S. 



