26o CONNECTICUT GEOL. AND NAT. HIST. SURVEY [Bull. 



cross-veins ; triangle 4-sided in the front wings ; M, not sinuate ; 

 subtriangle absent ; Cu^ arising exactly from the caudal angle of 

 the triangle in both wings ; triangle of the hind wings nearly as 

 far distad of the base as in the front wings ; hind margin of pro- 

 notum entire, and with a few short hairs ; male without ventral 

 hooks on the first abdominal segment ; transverse median carina 

 present only on the third tergum; general color, male black, 

 female black and yellow. 



Nannothemis bella Uhler 



Proceedings of the Academy of Natural Sciences of Philadelphia, 87 : 

 1857. 



Nymph. — Head: labium with 11 to 12 mental setae and 6 

 lateral setae (one additional minute seta at base) ; palpi with shal- 

 low teeth, each tooth with one to two spines ; eyes projecting well 

 forward, their margins viewed from above about as far cephalad 

 as any portion of the front or mouth parts. 



Thorax : legs short, the hind femora extending to the middle of 

 the abdomen. 



Abdomen : without dorsal hooks or conspicuous elevations ; 

 small lateral incurved spines on segments 8 and 9 ; segment 9 with 

 long setae on caudal margins, extending beyond the terminal 

 appendages ; superior and ventral appendages nearly equal in 

 length, the laterals about three-fourths as long. 



Measurements: total length, 8.5 mm.; length of abdomen, 

 4 mm. ; length of hind femora, 2.25 mm. ; width of head, 2.5 mm. ; 

 width of abdomen, 3 mm. 



Described from a nymph obtained from Dr. Calvert labeled 

 "Nannothemis bella (Uhler) Weith det. Simonton Lake, Elkhart, 

 Indiana 5/26/1901." 



Needham's^^ measurements are as follows: total length, 10 mm. ; 

 abdomen, 5.5 mm. ; hind femur, 3.5 mm. ; width of head, 3.5 mm., 

 of abdomen, 4 mm. 



Adult, male. — Color largely black. 



Head : labium and labrum jet-black ; clypeus black except the 

 lateral angles, which are white ; front with a black oblong spot 

 above the fronto-clypeal suture, a transverse area immediately in 

 front of the ocelli and the lateral margins also black, the remainder 

 white ; vertex metallic green ; occiput with two small white spots 

 near the dorsal margin between the compound eyes, the remainder, 

 and also the postgenae, black. 



Thorax: pronotum black, the caudal margin entire, and with 

 very few hairs ; meso- and metathorax uniform black, shining 

 (pruinose with age), the hairs nearly white; legs entirely black; 

 wings as in PI. xii, Fig. 2. 



Abdomen : black, without pale marks of any kind, slightly con- 



•'N. Y. State Museum, Bulletin 47: 51 1: 1901. 



