June, 1902.] 



Packard : New Genera of African Moths. 



101 



with about 32 joints, subsiniple, somewhat flattened, the longest branches two-thirds 

 as long as the joints bearing them, and ending in two minute rather long setae ; the 

 distal pectinations forming short stout teeth. Thorax moderately stout, not shaggy as 

 in Thyella : there is a definite prothoracic collar. 



Fore wings subfalcate, much as in Thyella; compared with those of Thyella 

 very similar in shape, but differing in the costa being a little less arched or curved 

 towards the apex, which is moderately acute, not so much so as in Thyella ; outer 

 edge slightly excavated ; inner angle not so square as in Thyella and more rounded. 

 Hind wings more rounded than in Thyella ; the apex much more rounded ; outer 

 edge rounder, as is the inner angle. The abdomen reaches to the beginning on the 

 inner edge of the hind wing of the extradiscal line. 



Fig. I. 



Fig. 2. 



Acanthocampa belitia. 

 suranal plate; cl, clasper. 



I, venation of fore wing; 2, genitalia, dorsal view; s. 



Venation (Fig. i) : vein II 2 present, as in Thyella: origin of veins II I-3 

 much as in Thyella but situated a little farther out, the chief difference in the venation 

 is in vein III 2 being independent, i. e., moved towards the middle of the extradiscal 

 cell, so that the discal veins are very short, not much more than half as long as in 

 Thyella. As will be seen by reference to the figures the venation is very different 

 from that of Nudanrelia. The same features are also seen in the hind wings (Fig. 3), 

 the discal veins being very short, though the general proportions of the discal cell itself 

 are much the same in Thyella and Ahidaiirelia. 



Markings : ground color obscure grayish-yellow or light fawn ; the ocellus on 

 the fore wing small, that on the hind wing about three times as large ; the clear space 

 being oval, that of the fore wings small, hemispherical, or rather semiovate, or half- 

 egg like in outline. The lines are white, the basal line inclined to be zigzag and the 

 extradiscal slightly scalloped, but not nearly so much so as in Thyella ; in general 

 the arrangement of the lines are much as in Niulaurelia cytkerea. Body and inner 

 edge of the hind wings not so shaggy and woolly as in Thyella. 



Fore tibial odoriferous sack is very different from that of Thyella, being short, 

 about two thirds as long as the tibia itself, and as wide, oval-lanceolate, flattened, 

 not sharp at the end. 



The fore tibia; are short and thick, with dense hairs entirely concealing the 



