NORTH AMERICAN NEUROPTERA. 271 



scars as usual, on 9th long, linear; genitals marked ; appendages as long as 10th 

 segment, short, cylindrical, not very sharp, the laterals scarcely shorter; legs 

 short, strong, for burrowing : hind legs a little longer, reaching about end of 5th 

 segment; third joint of posterior tarsi as long as the second; apical hook on an- 

 terior tibiae very small ; femur with a strong apical hook internally. 



G. spiniceps is very similar to G. plagiatus, but the legs are shorter 

 and stronger, the abdomen more slender and slower tapering, lateral 

 spines shorter. The hook on anterior tibia in G. plagiatus, notatus, 

 olivaceus ? is as small as in G. spiniceps. 



27. Ooinphus olivaceus? (supposition). 

 Selys Syn. Gomphines iii, p. 21, quart. 



One male nympha skin in alcohol from Great Salt Lake, Utah, by Mr. 



Garman. Length 32 mm. 



Very similar to G. notatus ; body somewhat hairy, third joint of antennae 

 wanting; mask more oblong, basal third narrower; front border in middle third 

 produced in a short rounded lobe, with a very short comb of flat scales ; palpus 

 similar to G. notatus; abdomen a little broader, more lancet shaped; segment 9 

 a little longer than 8, with a very short apical spine above ; lateral spines on 6 to 

 9, the last one blunt, half as long as segment 10, which is very short, cylindrical ; 

 scars as usual ; the rectum with part of the intestinal apparatus retained in the 

 skin ; ventral pockets in segments 3 to 5 small, triangular ; appendages similar, 

 rather blunt; legs similar. 



The rounded middle lobe of the mask, the somewhat broader abdomen, 

 the shorter lateral spine on segment 9 are the principal differences. It 

 seems probable that this nympha belongs to G. oliva^ccus. 



Sub-genus Ctclogomphos? (supposition.) 

 Selys Monogr. Gomphin. p. 105. 



Body flat, similar to G. vulgatissimus, third joint of antennae twice the length 

 of the two basal, hardly thicker, flat, bent up; fourth very small, conical; mask 

 one-third longer than broad, sides oblique, base one-third narrower than front; 

 the middle third of front border produced in an elliptical lobe with a deep rect- 

 angular cleft; abdomen flat, lancet shaped, segments of equal length, 10th half 

 as long; lateral spines on 5 and 9; no dorsal hooks; legs more slender, less fit for 

 burrowing ; hooks on the four anterior tibiae rudimentary, nearly wanting. 



The cleft of the lobe of the mask is entirely abnormal ; the lack of 

 developed hooks on the tibiae is also abnormal. Both characters together 

 seem to indicate for this species a rather higher position than a sub-genus. 

 That the species belongs to Cyclogomphus is only a supposition. 



28. ? Cyclogomphus species. 

 Cabot p. 5, No. 7, pi. ii, fig. 2. 



Seven nympha in alcohol, probably not full grown, some younger ; 



from Ghugger Pir, Himalaya, by Rev. M. M. Carleton. Length 23 to 



17 mm. 



