476 NEW YORK STATE MUSEUM 



Prothorax with a transverse dorsal flattened area, which is fringed 

 with stifl:' hairs; legs slender and not very long, adapted, not for running 

 as stated by Hagen [Joe. cit. p. 288), but for raking the sand aside; 

 femora and tibiae with dorsal and ventral rows of long hairs, the ventral 

 row on the tibiae graduating into spines at the tip, these becoming 

 arranged in a double row on the ventral side of the tarsal segments; 

 tarsi three-jointed; wings a little divergent on the two sides, when 

 grown, reaching the fourth abdominal segment. 



Abdomen, subcylindric, arcuately upcurved toward the tip; no dorsal 

 hooks ; lateral appendages less than one fourth as long as superior and 

 inferiors; the transverse apical rings on the abdominal segments are 

 somewhat remote from the apices of the segments and bear rows of very 

 stiff hairs, which are incurved at the tip and serve to hold a layer of 

 sand, dirt, etc. about the body. 



The two species of nymphs described below may be easily separated 

 as follows. 



a Lateral margins of abdominal segments 8 and 9 sharp, ending posteriorly in 



stout triangular, conspicuous lateral spines diastatops (raised) 



aa Lateral margins of abdominal segments 8 and 9 hardly acute, at tbeir pos- 

 terior ends a pair of minute, slender, cylindric, pointed spines, that are 



shorter than the hairs among which tbey are hidden,. maculatus 



(supposition) 



Of the eggs of Cordulegaster I know nothing. Field observa- 

 tions are much needed on the matter of oviposition to observe whether 

 they are dropped into the water, attached to supports, or inserted into 

 plant tissues, and, if the latter, how the long, imperfect ovipositor of the 

 female is used. 



Cordulegaster maculatus Selys 



1854 Cordulegaster maculatus Selys, Acad. Belg. (2) Bui. 21 : 105 

 1861 Cordulegaster maculatus Hagen, Synopsis Neur. N. Am. p. 115 

 1875 Cordulegaster maculatus Hagen, Bost. soc. nat. hist. Proc. 



18 :50 (bibliography and distribution) 

 1893 Cordulegaster maculatus Calvert, Am. ent. soc. Trans. 20 : 246 



(description) 



This species was not uncommon at Saranac Inn. It was to be seen 

 during the greater part of the summer on sunshiny days coursing up and 

 down Little Clear creek on the hatchery grounds: it was observed 

 nowhere else. It has not been reported from New York state hitherto. 



The nymphs referred to this species by supposition (none of them 

 being reared) were common in the sandy bed of Little Clear creek, in 

 the places over which the imagos were observed flying; but one species 

 was seen ; that is the reason for referring the nymphs to this species. A 

 number of exuviae were found on the edges of the fish ponds within a 

 few days after our arrival, but none appeared later, and, though nymphs 

 apparently fully grown were repeatedly taken and a good many of them 

 kept in our cages through the remainder of the season, none of them tfans - 



