62 Journal New York Entomological Society. [Voi. vii. 



equal length, with the others rudimentary at the base, or absent. De- 

 pressed spaces represented by whitish spots, distinct but unmodified at 

 the surface of the skin; (i) paired and alternating with (2) in the 

 dorsal space; (4) and (6) on the posterior half of the segment in 

 the lateral space in an unpigmented area; (5) indistinguishable. 

 The spiracle of joint 5 is above the line of the lateral horns. No 

 caltropes or detachable spines are present. Skin at first wrinkled 

 shagreened, later finely granular. This larva neatly connects Sisyrosea 

 textula with the other spined Eucleids. The horns are of nearly equal 

 length as in S. textula, but the three anterior ones are a little length- 

 ened, while the subdorsal of joint 8 is not, thus foreshadowing the 

 structure of Sibine. The general shape is that of the spined Euclids, 

 not specially flattened as in S. textula, though the lateral horns are 

 longer than the subdorsals at one stage, indicating an affinity with 

 Sisyrosea that is shown also in the wrinkled skin, the depressed spaces 

 situated in posterior pigmentless areas separated by raised bars, the 

 absence of caltropes, etc. The similarity is by far greatest in the 

 early stages and the two larvre continually diverge during ontogeny. 

 Stage I is almost the same as in S. textula. Examples of the latter 

 occur with the central horns partly degenerated as in N. nasoni. This 

 condition is an evident approach to the three-spined horns of the 

 higher member of the groups such as Sibine, Euclea, Parasa, etc. 



Affinities, Habits, Ere. 



This larva represents the oldest type of spined Eucleid, possessing 

 true stinging spines, that is found in North America. The moth be- 

 longs to a wide-spread type. Species with exactly the same pattern of 

 coloration occur in both India and Africa and one at least of them is con- 

 generic with our species. I am not certain that it may not prove con- 

 specific. N. nasoni occurs throughout the Southern States to Mexico. 

 Mr. H. Druce has redescribed it from the latter country as Perola 

 daona from Jalapa and Costa Rica. In New York State it finds its 

 northern limit and has only a precarious foothold in the State. The 

 occurrence is in a limited area through the hilly central portion of 

 Long Island, including the towns of Ronkonkoma and Yaphank, where 

 I have collected it. Southward it reappears at Plainfield, N. J., and 

 further south is doubtless more wide-spread, although not often reported 

 by collectors. It is not rare in the District of Columbia. 



The moths emerge at the end of June and early in July. The emer- 



