REVISION OF KLKODIINI BLAISDELL. 481 



two-thirds soiiiowhat depressed, laterally more arcuate and declivous, 

 circularly membranous at center; sides arcuate at basal third, thence 

 sinuate to apical third, where it is arcuate and continuously so with 

 the broadly rounded apex; base feebl}' lobed at middle, broadly and 

 feebly sinuate laterally. 



Claoa (Plate 7, fig. 8) comparatively broad, flattened, and of 

 nearly equal width throughout, obtuse and rounded at apex, slightly 

 arcuate, with convexity outward, not contiguous in the median line, 

 except at base, ventrad to the edeagus; aire of the apicale evidently 

 differentiated as separate elongate sclerites {svbala), but united by 

 a suture to the apicale. 



/Sternite transversely parabolic in outline, bilobed. Each lobe sub- 

 triangular; surface not strongly but slightl}' unevenly convex, gla- 

 brous, rather sparsely punctate and pubescent in posterior two-thirds, 

 pubescence denser in the apical area, hairs yellowish; external bor- 

 der straight and oblique in basal three-fifths, thence straight and 

 obliquely subtruncate to apex, the latter narrowly rounded; internal 

 border quite straight ; interlobar membrane not pubescent. Sinus 

 triangular. 



Female. — Genital segment (Plate G, fig. 12) triangular, about as 

 long as wide at base, superior surface quite plane, chitinized through- 

 out, apically very finely pubescent. 



Yalvula. — Dorsal plate not defined from the apex; surface gla- 

 brous, plane, very sparsely and finely pubescent apically; external 

 border rather straight, I'ounded at the angle and directly continuous 

 with the feebly and broadly sinuate superior margin of the fossa; 

 internal border broadly sinuate in apical half, thence feebl}^ arcuate 

 to the base. 



Apex short, rounded at tip, chitinous, fossa on its external surface, 

 finely pubescent, hairs short but noticeable. 



Appendage nuimmilliform, short, penicillate, hairs quite long. 



Superior pudendal meinhrane long, reaching to the base of the 

 apex, very minutely longitudinally rugulose. Basal prominences 

 noticeable. 



Venfi'olateral surfaces quite evenly convex in basal two-thirds, 

 glabrous, here and there a minute hair, very feebly impressed before 

 the apex. Submarginal groove distinct beneath the feebly explanate 

 external border of the dorsal plate, subobsolete in basal fourth. 

 Apex feebly convex beneath. Appendage and fossa distinctly visible 

 from below. Internal margins of the valves contiguous, genital fis- 

 sure apical, small, and fusiform. 



Ilah'dat. — Bolcan Mountain, between Warner's Ranch and Julian, 

 San Diego County, California. Taken from beneath a log. 



Number of specimens studied, 2 (male and female). 

 59780— Bull. 63—09 31 



