330 GEO. H. HORN, M. D. 



longer than wide, at middle longitudinally impressed, cinereo-pubescent. Ely- 

 tra at base not wider than thorax, sides moderately arcuate, surface striate, 

 stn'93 punetulate, intervals flat, densely punetulate and sparsely cinereo-pubes- 

 cent. Pygidium oval, coarsely punctured and rugose, sparsely pubescent. 

 Body beneath black, finely punctured, and clothed with finer pubescence than 

 above. Legs black. Length .04— .06 inch ; 1 — 1.5 mm. 



In very well preserved specimens, which, however, are rarely seen, 

 the pubescence of the elytra is not uniformly cinereous, the third in- 

 terval has a short whitish line and two very indistinct interrupted 

 bands of darker color cross the elytra, one near the base, the other 

 behind the middle. This is one of the smallest species in our fauna. 



The tooth of the hiud femur is short but acute and the denticle 

 very minute. 



Not rare from San Jose to San Diego, California. 



Group VII. 

 This group contains species in number nearly equalling all the 

 other groups taken together. They are usuailv of elongate form. 

 The hind femur has one moderately large tooth and always two denti- 

 cles, the latter being usually distinct from the tooth itself, rarely ari- 

 sing from its vertical edge. 



The following synoptic table will assist in the identification of our 

 species, and as the characters made use of are drawn almost entirely 

 from the colors of various parts of the body, care should be used to 

 procure perfectly developed specimens, as the color (of the legs especi- 

 ally) is not otherwise to be depended upon. 



Elytra rufo-testaceous frequently with black spots or patches 1 



Elytra entirely black or dark piceous 2 



1. Intervals of strise with a row of sub-muricate punctures 3 



Intervals equally punetulate or punctulato-rugose 4 



3. Scutellum rounded or transverse v . 5 



Scutellum elongate. 



Pygidium with short impressed line on each side near apex....prosopis. 



Pygidium without lines florirta . 



5. Sides of elytra with large black spaces protract uk. 



Elytra uniform in color, or humeri alone darker. 



Body beneath uniformly pale rufous in color inornatus. 



Body beneath black, abdomen rufous pectoralis. 



4. Elytra uniform in cojor, humeri rarely darker. Species moderate. 



uniform!*. 

 Elytra with black spot at middle of side. Species small bisignattis. 



2. Black or piceous species. 



Legs bicolored, anterior and middle usually rufous, hind legs black.. 6 



Legs all black 7 



