GOMPHOIDES 63 
The senior author found nymphs of this species exceedingly abun- 
dant in the sandy bed of the Santa Ana River below Riverside Cali- 
fornia in April. A dozen or more of them could be taken at each sweep 
of the sieve net on the bottom. In May the adults were seen along 
the upper reaches of the Santa Margarita River further southward 
They flew swiftly from one resting place on the bare sand to another, 
and were very inconspicuous when at rest. They were not especially 
difficult to approach by stalking, or to capture when at rest. 
Davis (’13, p. 19) found them on several occasions in May and June 
flying up and down a shaded ditch by the side of the railroad track 
at Lakehurst, N. J. 

LAA 
obscurus 
2& (onl 
4. GompuHorpEs Selys 


This is another tropical American genus of about a dozen species, 
of which a single one enters our limits on the Mexican border. That 
one is a big yellowish clear-winged species. Its triangles are all un- 
usually broad and divided by cross veins into several cells. Its anal 
loop of several cells is well delimited in the rear by the converging 
branches of the anal veins. Its stigma is large and heavily pigmented. 
Texas. 
The nymph is a burrower in muddy stream beds. It is recognizable 
_ by the sharp middorsal ridge ending in a straight spine on the tapering 
abdominal segments, and when grown, by the length of the lateral 
appendages, these then being about as long as the other appendages. 
