270 NEW YORK STATE MUSEUM 



opposed margins of the lateral lobes inrolled, moderately well 

 marked, each about 4 spinulose. 



On the middle of the sides of the abdomen are two longitudinal 

 brownish bands, below which the sides are paler. 



One specimen, collected by Mr T. H. Hankinson near Varna, 



2 miles above Ithaca, from a cold spring brook near to the place 



of its confluence with Fall creek, July 13, 1901. I collected a 



specimen of the same species in Six Mile creek a mile southeast 



of Ithaca in April 1896. I innocently placed it in a breeding cage 



in which were a few Gomphus nymphs burrowing in the mud of 



the bottom; for I did not then know that Gomphus nymphs go 



foraging in the territory above them. The next morning there 



remained in my cage but a fragment of the Somatochlora nymph, 



fonsistiug of the dorsal wall of the abdomen and the abdominal 



appendages. This fragment I preserved, for I had recognized 



that the nymph was a new one, and I find it quite sufBcient for 



recognition as the same species described above. The dorsal 



hooks are perhaps twice as long in this species as in S. e 1 o n- 



gata. Since S, el on gat a is the only species known from 



Ithaca, I am unable to say to what sjiecies this nymph may 



belong. 



Somatochlora sp. no. 3 



A single nymph, not fully grown, sent me from Raleigh N. C. 

 by Mr C. S. Brimley. It is a short, flat species with very wide, 

 abruptly truncated abdomen. Somatochlora tene- 

 b r o s a has been collected at Ealeigh, and the nymph may be- 

 long to that species. 



Length 16mm, abdomen 9mm, hind femur 5.5mm, antenna 

 6mm; width of head 5mm, of abdomen 8mm. In form and orna- 

 mentation of the head and front part of the body and in arma- 

 ture of the labium similar to the preceding species. Differs in 

 the relatively greater width and flatness of the abdomen, in 

 having the lateral spines of segments 8 and 9 wider, flatter, 

 blunter and straighter at tip, and triangular in outline as seen 

 from above; appendages shorter and more retracted, the tip of 

 the laterals hardly surpassing the level of the tips of the lateral 

 spines of the ninth segment (surpassing these by half their length 

 in the preceding species). Dorsal hooks shorter, on segment 4 

 a mere rudiment, on 5 small, on 6-9 better developed, spinulose 

 -on superior and straight and bare on inferior margins. 



