Jan., '05] ENTOMOLOGICAL NEWS. 5 



that I flushed from sunny openings in the bottomland gave me 

 no chance whatever of capture. 



I found cast skins, also, half a dozen of them in all ; but 

 these were unusually hard to find, being heavily covered with 

 bottom silt, which matches well the trash in which they lie. 

 All were within a foot of the water's edge, and all but one lay 

 fiat upon the ground. 



The nymph of C. obliquus is in general appearance very like 

 those of half a dozen other species of the genus. It agrees 

 with the brief description given by Dr. Hagen for a Texas 

 specimen (from the collection of the late lamented Mr. Mc- 

 Lachlan) which he referred to this species (Trans. Amer. 

 Ent. Soc, XI, 291', 1885), except in size. The largest female 

 nymph I found measures in total length 39 mm., abdomen 25 

 mm., hind femur 6 mm. ; width of head 8 mm., of abdomen 10 

 mm. The whole body is densely clothed with stiff hairs, and 

 these hold a complete investment of silt. When one cleans a 

 nymph carefully with a soft brush (it is a prolonged and tedi- 

 ous operation), he finds beneath the silt quite as much of color 

 pattern as is usually shown by dragonfly nymphs. The frontal 

 fringe of stiff radiately arranged bristles comes out more 

 clearly also, and a tuft of black bristles above each lateral 

 ocellus. The " epaulets" of the prothorax are large, obliquely 

 oval, and are fringed on their external margins with stiff 

 bristles. The legs are short, yellowish, with interrupted 

 apical and subapical rings of fuscous appearing on all the 

 femora. The wing tips reach the base of the fifth abdominal 

 segment. The abdomen is without dorsal hooks, but there 

 are stout straight lateral spines on segments eight and nine, 

 the one on the ninth segment slightly larger and equaling in 

 length half the length of the segment. Dr. Hagen mentioned 

 these spines, but he omitted to notice the other diagnostic 

 characters, which are in the armature of the labium. There 

 are six lateral setae, and about thirteen setse on the mentum 

 each side, the outermost eight stronger and in a close set 

 series. The bifid middle tooth of the labium is much as in 

 C. diastatops. 



I did not observe the female ovipositing, as I had hoped to do. 



