BEVISIOF OF ELEODIINI BLAISDELL. 291 



Female. — Genital segment subquadrate, not strongly developed at 

 base, moderate in size, and setose. 



Yalvula (Plate 1, fig. 21). — Dorsal plate, oblong, ^Yitll sides more or 

 less reflexed ; surface moderately concave, finely and sparsely punc- 

 tate, and with rather short setse ; external border moderately arcuate ; 

 internal margin quite straight and parallel; apical margin subtrun- 

 cate and fringed with a few very short hairs; angle subrectangular 

 and without conspicuous seta?. Apex short, stout, and triangular, 

 with few very short hairs at tij). 



Appendage moderately large, as long as the apex, flattened, semi- 

 elliptical, and broadly rounded at tip, wath two or three long seta?, 

 others short and scattered over the surface. Fossa moderate in size 

 and not conspicuously fringed with setae, situated beneatli the ex- 

 ternal half of the apical margin of the dorsal phite. 



Buferior ^pudendal memhrane attaining about the middle of tlie 

 dorsal plate and longitudinally rugulose. Valvular membranes visi- 

 ble between the apices caudad. 



VentroJateiml surfaces. — Body slightly swollen at base, moder- 

 ately and transversely concave before the apex, the latter covered 

 with short seta^. Submarginal groove normal and linear, more or 

 less visible from above, especially in dried specimens; lateral plate 

 not visible externally when viewed from above. Internal margins of 

 the valves contiguous for a short distance at base; genital fissure long 

 and fusiform, closed in basal half by the inferior pudendal mem- 

 brane. 



The three following forms are to be recognized : 



Forma typica. — Moderate in size. Males more or less caudate. 

 Elytra striato-punctate and not noticeably inflated, 



Measurem,ents. — Males: Caudate form: Length, 20-28 mm; with 

 Cauda, 23-31,5 mm. ; wddth, 8-10.5 nun. Ecaudate form : Length, 

 24—28 mm.; width, 9-9.5 nnn. Females: Length, 22-27 mm.; width 

 9.2-11.5 mm. 



Forma inflata, — Quite robust. Elytra striato-punctate and more 

 or less distinctly inflated (Plate 1, fig. 22). 



j\Ieasure7)ients. — Males: Not at hand. Females: Length, 26.5-32 

 mm.; Avidth, 11.5-13.2 mm. 



Forma grandis. — Very robust and elongate, smooth, body very 

 evenly and gradually narrowed behind. Elytral stria? more or less 

 obsolete. 



Measurements. — Male: Length, 37 mm.; width, 13.5 mm. 



Hahitat. — ^Lower California. 



Forma typica. — Cape St, Lucas; Santa Rosa, Gustav Beyer; San 

 Jose del Cabo, collections of Charles Fuchs and California Academy 

 of Sciences 



