REVISION OF ELEODIINI BLAISDELL. 315 



Two forms are recognized — 



Forma typica. — Elongate-ovate, strongly depressed and very finely 

 punctiilate ; anterior tibiae quite strongly constricted at the base. 



Forma oblonga. — Elongate oblong-ovate, not strongly depressed, 

 rather strongly punctate; anterior tibia" not constricted at base. 



Measurements. — Males: Length, 20-22 mm.; width, 0.5-8 mm. 

 Females: Length, 20-23 mm.; width, 9-9.2 mm. 



Genital characters, male. — Edeagophore of the usual oblong-ovate 

 form and depressed. 



Basale oblong; sides broadly and evenly arcuate; surface rather 

 evenly convex, not gibbous nor noticeably arched. 



Apicale triangular; surface rather evenly convex, with a median 

 shallow and rather broad groove extending to the apical fourth ; 

 sides scarcely arcuate; apex acute and slightly produced; base with 

 a rounded lobe at middle and feebly sinuate laterally. 



^ternite feebly transverse and subparabolic in outline. Each lobe 

 with the external border evenly arcuate; apex obtuse; internal mar- 

 gin straight to feebly arcuate; surface glabrous and shining, not 

 densely jDunctate, setose, setse moderately long and not dense. Mem- 

 brane at bottom of the sinus, not setose. 



Female. — Genital segment elongately triangulo-parabolic in out- 

 line. 



Valoula (Plate 4, fig. IG). — Dorsal plate elongate oblong, moder- 

 ately narrow, sides subparallel and not reflexed ; surface more or less 

 feebly concave, glabrous, finely and sparsely punctate in apical third ; 

 external margin nearly straight in basal three-fourths and rather 

 moderately arcuate in apical fourth ; internal border more or less 

 sinuous ; apex very short, subacute, very feebly chitinized and setose ; 

 setse moderately long and fine, those on apical fourth of the dorsal 

 plate sparsely distributed. 



Appendage short, more or less flattened and somewhat semicircular 

 in outline, setae at tip rather short, and subapical in position upon the 

 apex. 



Superior pudendal m^emhrane longitudinally rugulose, attaining 

 the apical fifth of the dorsal plate. 



Ventrolateral surfaces not inflated, surface lines straight when 

 viewed longitudinally, regularly convex from side to side, glabrous 

 and very sparsely punctate. Apex finely and sparsely setose. Sub- 

 marginal groove rather broad beneath the more or less explanate 

 external border of the dorsal plate, the latter sometimes more or less 

 translucent. Internal margins of the valves contiguous in basal 

 three-fourths; fissure apical and triangular between the slightly 

 diverging ventral plates. Inferior pudendal membrane attaining 

 the base of the apices and visible in the apical fissure. 



Habitat. — Lower California. 



