606 Goleopterological Notices, VII. 



lobe at apex, the last dorsal broadly rounded with the tip feebly 

 sinuate. Deformata is a little more southern in its range. 



R. falli. — Strongly convex and ventricose, shining, 

 black, the elytra bright rufous; legs piceous, the tibise 

 slightly, the tarsi much, paler; antennae blackish; integu- 

 ments subimpunctate, the pronotum slightly sculptured 

 along the basal margin; pubescence silvery, rather abun- 

 dant, short, decumbent and closely recurved. Head 

 slightly narrower and longer than the prothorax, 

 the vertexal fovese deep, situated distinctly nearer the 

 ^*^' ■ base than the apex; eyes rather large, prominent, at 



1. Male antenna of scarcely U their length from the base. Antennee ex- 

 Same of R. falli. 3. tremely modified, about as long as the head and protho- 

 Same of R. sagax. rax, the last joint very obliquely pointed ; first joint large, 



convex beneath ; second much smaller, slightly transverse ; 

 third and fourth small, wider than long; fifth large, as wide as the first, almost 

 equilatero-triangular ; sixth a little wider than the fifth and much shorter, 

 strongly transverse ; seventh extremely large and dilated, longer than the fifth 

 and twice as wide, asymmetrically obtrapezoidal, convex above; eighth small, 

 transverse, the club thence very gradually formed and nearly normal, the di- 

 lated joints profoundly complex beneath, the sixth with a narrow vertical lig- 

 ula, the seventh broadly excavated, with a slender spine arising obliquely and 

 inwardly from the basal margin, the excavation smooth and polished. Prothorax 

 unusually short, 3^ wider than long, widest near the middle, the sides evenly 

 and not very prominently rounded; apex nearly % the maximum width and 

 % as wide as the base; fovese normal. Elytra broad and ample, nearly )^ wider 

 than long; suture quite distinctly longer than the humeral width; sides mod- 

 erately divergent, arcuate toward tip ; humeri large ; striae and fovese normal. 

 Abdomen nearly as wide as the elytra but much shorter; carinas fine, straight, 

 moderately divergent, fully % as long as the segment and separated at base 

 by a little more than }4 the total width. Legs rather long and slender, the 

 hind femora irregular, obtusely prominent beneath beyond the middle, the 

 upper face broadly emarginate in a cylindrical surface thence to the base, the 

 hind tibiae long, slender, evenly arcuate throughout and but slightly thickened 

 toward tip. Length 1.25 mm. ; width 0.65 mm. 



California (Sta. Monica, Los Angeles Co.). Mr. H. C. Fall. 



In this species the sexual modification of the antennal funicle 

 is carried to an extreme, and there are sexual modifications of 

 the basal joint also, and of the hind femora, which render it one 

 of the most isolated even of the widely difi'erentiated California 

 Reichenbachiae. The second ventral segment is longer than the 

 entire remainder of the abdomen, and the last is only moderately 

 long, flattened slightly toward the middle and feebly, arcuately 



