126 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [Bull. 



as the third is wide; middle coxae more approximate than the 

 front; abdomen much longer than broad; the ninth abdominal 

 segment with or without an acute dorsal spine at apex. 



Adults. — Subcostal vein present ; triangles with cross-veins ; 

 anal loop absent or indistinct ; occiput with an elevated ridge 

 between the compound eyes. Hind femora at most with short 

 spines, the femora not quite reaching the hind margin of the first 

 abdominal segment; inferior anal appendage of the male cleft or 

 bifid, not with divaricate arms. 



Progomphus obscurus (Rambur) 



Histoire naturelle des insects. Neuropteres, 170: 1842. 



Nymph. — Head with terminal segment of the antennae long, 

 recurved, and about as long as the width of the preceding segment ; 

 labium as in PI. v, Fig. 7. 



Thorax : legs short, the middle coxae more approximate than 

 the front or hind coxae; wing cases extending to the fifth 

 abdominal segment. 



Abdomen: lateral spines on segments 5 to 9 and dorsal apical 

 hooks on 2 to 9 ; segment 9 about as long as wide. 



Measurements: total length 27 mm.; length of abdomen 16 

 mm. ; hind femora 2.5 mm. 



Described from material in the Cambridge Museum of Com- 

 parative Zoology, and a nymph received from Dr. H. Garman, 

 and still another in the collection of William T. Davis. 



Adult, male. — Entire face brown or straw color ; ocellar area 

 brown; occiput mostly brown. 



Thorax : mesepisternum with a narrow pale stripe about .5 mm. 

 wide or less, not connected at either end with any other pale 

 color ; broad pale stripe present on the mesepimera and a small 

 pale spot just behind the metathoracic spiracle ; all of metepimera 

 pale except the dorsal margin. 



Abdomen : segment i brown ; 2 with cephalic half pale, caudal 

 half with a divided brown spot ; 3 and 4 with narrow bilobed spots 

 on the mid-dorsum, the cephalic lobe wider ; 5 and 6 the same 

 as 3 and 4 except that the spot in front is wider ; 7 with spot 

 reaching the lateral margins in front ; 8 dark brown, obscurely 

 marked on the sides ; 9 and 10 dark brown ; anal appendages with 

 the superiors pale (straw color), darker at base, 2.5 mm. long; 

 inferiors dark brown, about half as long as the superiors; in 

 lateral profile the inferiors with a dorsal hook shortly in front of 

 the apices ; hamules of the second segment with curved distal hook 

 and a transverse row of short tubercles near the base when viewed 

 from below. 



Adult, female. — Color dark brown marked with greenish 

 yellow or olive. 



Head : brown, vertex without a definite postocellar ridge as in 



