EEVISION OF ELEODIINI BLAISDELL. 93 



Basale rather short, suboblong oval; sides feebly arcuate; surface 

 evenly convex. 



Apicale elongately triangular and rather arched; surface evenly 

 convex, with a rather narrow longitudinal groove in apical two- 

 thirds; sides nearly straight, apex acute; base with a rather small 

 rounded lobe at middle and feebly siiniate laterally. 



Steniite short and transversely parabolic in outline, each lobe 

 somewhat transverse with the external border broadly arcuate; apex 

 slightly prominent and rather narrowly rounded ; internal border 

 rather straight ; surface feebly convex, strongly and sparsely punctate, 

 setae rather long. Membrane ^ery sparsely setose across the bottom 

 of the sinus, the latter short. 



Female. — Genital segment quadrate, valves with their external 

 borders feebly converging, setose. 



Valrxla (Plate 3, fig. 18). — Dorsal plate oblong, feebly explanate 

 externally and nearly plane; surface glabrous, finely and very 

 sparsely punctate, seta? short and reclining; external border more or 

 less feebly arcuate ; internal border straight or sinuous ; apical margin 

 moderately arcuate in external three-fourths on the external lobe; 

 internal lobe not prominent and separated from the external by a 

 feeble sinuation. 



Appendage sometimes visible from above, rather short manunilli- 

 form, with a few short settv at tip. P^ossa large and quite terminal, 

 the inferior margin of the valvular membrane forming the internal 

 margin, the latter more prominent than the internal lobe above. 



Basal prominences not in the least evident. 



Superior pudendal membrane longitudinally rugulose, long, reach- 

 ing to the internal apical lobe. 



Venfrolater(d surface moderately convex, not prominent at the base 

 and not transversely concave before the apex; submarginal groove 

 very broad and shallow, forming a lateral concavity before the apex. 



Habitat. — California (San Francisco, Marin, Alameda, and San 

 Mateo counties, August). Specimens have been distributed as having 

 been collected in San Diego County, but all of those were undoubtedly 

 collected by Mr. G. AY. Dunn and sent out without true locality 

 labels — at least that is the case with a series that I have had for years. 

 Personally I have collected them only in the above-named localities 

 and have no authentic data of their having been taken elsewhere. 

 Colonel Casey's type specimen was without an exact locality label. 



Number of specimens studied, 30. 



Type in Colonel Casey's collection. 



Type-loc(dity. — California; probably from some place about the 

 Bay of San Francisco. 



