ENTOMOLOGICAL CONTRIBUTIONS. 143 



2 ; on each side of the submedian, nearer the margin than the pre- 

 ceding spot, is a very small and obscure one (in the $ the one before 

 the nerve is absent) ; resting on the discal nervure (vein 5), and 

 wholly within cell 5, is a small spot, slightly larger than the two last 

 mentioned. The brown primaries have eight white spots, surrounded 

 with brown, except the apical one and that at the internal angle, in 

 which the white is continued on the costa and over the fringe ; the 

 two spots on the outer margin above the larger one at the internal 

 angle, are quite small. 



Arctia Arge (Drury). 



Larva found in the road, on a warm and sunny day on the 25th of 

 February. 



Color dark brown, head and prolegs black, legs tawny. Body 

 with three flesh-colored stripes, one dorsal and two lateral ; substig- 

 matal fold colored as the stripes ; the hairs, proceeding from tuber- 

 cles, are long, brown dorsally and tawny laterally; on the segments 

 anteriorly is a small tubercle on each side of and near to the dorsal 

 stripe, and a larger one on the posterior of the segment near the late- 

 ral stripe 



The caterpillar fed sparingly, for a few days, on a cactus leaf, and 

 commenced the spinning of a slight cocoon on the 1st of March, 

 within which it transformed to a pupa on March 4th. 



The moth emerged on the 23d, after a pupation of nineteen days. 



Spilosoma virginica (Fabr.). 



Head black. Body tawny-red, darker on the four anterior seg- 

 ments ; a lateral row of broken, irregular black spots ; a pale red line 

 below the stigmata ; from the tubercles long hairs proceed (the 

 longest of which measure three-fourths of an inch) which are black 

 on the first and second segment and on the sides of the two follow- 

 ing, and red over the central and posterior portion of the body. 

 Stigmata white. Exterior basal portion of legs black, the remainder 

 red. 



In another example, the hairs were yellow, the dorsal ones 

 approaching to red ; the body yellow, darker superiorly above the 

 lateral maculated stripe ; incisures superiorly, dusky. Head red. 

 (Schoharie, 1859.) 



An interesting sexual characteristic observable in the male of this 

 species and in S. acrea, but not in S. latipennis, is the process given 

 off by the subcostal nervure for the support of the frenulum, clothed 



