472 CALIFORNIA ACADEMY OF SCIENCES. 



nisus, in the emargination of the clypeus, and it shows, 

 also, what Piaget affirms to be merely an individual 

 character, the effacement of a distinctly limited signature, 

 as spoken of by Nitsch. The new form is markedly 

 larger than gonorhynchus, and the male has no transverse 

 linear blotch on the last segment. 



Description of male. Body, length 2.06 mm., width 

 1 mm.; strongly colored. 



Head, length .78 mm., width .78 mm.; thus being very 

 large in proportion to the size of the body; front with 

 shallow emargination, the projecting lateral parts angu- 

 lated ; clypeus expanded laterally behind these frontal 

 angles, and the uncolored expanded portion bearing two 

 conspicuous, longish hairs; a short marginal hair just in 

 front of the suture, and two longish hairs rising on dorsal 

 surface and projecting beyond margin between suture 

 and trabecular; trabecular broad, not reaching beyond 

 end of segment 1 of antenna; eye projecting, pendulous, 

 with angulated cornea, and bearing a hair; temporal 

 margins flatly rounded and bearing four long hairs, and 

 on occipital side of posterior angle a short hair; occipital 

 margin nearly straight, bare ; general color of head light 

 translucent brown; signature indistinctlv limited, its 

 lateral margins obscured by the strong inner bands; an- 

 tennal and occipital bands strongly marked and continu- 

 ous; ocular bands distinctly indicated; suture distinct, 

 interrupting the antennal bands ; antennal and inner bands 

 paling anteriorly; temporal regions brown, with narrow 

 darker outer margin. 



Prothorax short, broad, with uneven rounding sides, 

 and a single hair in each posterior angle, the angle being 

 slightly tumid; broad, apparently divided, lateral bands 

 pale outwardly, and bending in along the posterior margin 

 of the segment. Metathorax short, with sinuous, very 



