1880.] Lbb [Horn. 



4. A. pilosus, n. sp. Form rather narrow, elongate, piceous, feebly- 

 shining, pubescent, legs rufous. Head very coarsely and deeply punctured 

 and with long hairs, clypeus with two larger setigerous punctures on each 

 side. Thorax a little wider than long, narrowed behind, sides arcuate 

 anteriorly, oblique posteriorly, hind angles distinct but not prominent, 

 base slightly arcuate on each side, disc moderately convex, coarsely and 

 deeply punctured, the punctures regularly placed, surface with moderately 

 long hairs. Elytra a little wider than the thorax, oblong, sides very 

 slightly arcuate, surface finely striate, intervals flat and regularly biseri- 

 ately closely punctate, each puncture with a rather long semi-erect hair. 

 Thorax beneath very coarsely and deeply punctate, metasternum at sides 

 coarsely punctate, abdomen at sides more sparsely punctulate. Length .28 

 inch ; 7 mm. 



This species is much more slender in form than obtusus, and differs also 

 in the longer hairs of the surface and the sculpture of the thorax beneath. 

 Sexual characters as in obtusus. 



Occurs in the San Joaquin Valley, California. (Bliithner.) 



5. A. immanis, n. sp. Oblong, depressed, piceous, feebly shining, pu- 

 bescent, legs rufous. Head coarsely but not deeply punctate, with short 

 erect hairs, clypeus with one setigerous puncture on each side. Thorax 

 broader than long, narrowed posteriorly, sides in front arcuate, posteriorly 

 oblique, hind angles distinct but not prominent, base on each side slightly 

 arcuate, disc feebly convex, coarsely but not deeply punctate, surface with 

 very short erect hairs. Elytra wider than the thorax, oblong oval, sides 

 slightly arcuate, surface finely striate, intervals flat and rather finely and 

 closely biseriately punctulate, with very short erect hairs. Thorax be- 

 neath with a few coarse punctures in front. Metasternum at sides and 

 abdomen sparsely punctulate. Hind tibiae with short, broad, spathuliform 

 terminal spurs. Length .34 inch ; 8.5 mm. 



I have seen but two females of this species, which bears considerable re- 

 semblance to obtusus, differing in the structure of the posterior tibial spurs. 

 This character is so remarkable and unexpected in this genus that I would 

 have passed the specimens as probable monstrosities, but the structure pre- 

 cisely agrees in the hind tibiae of both specimens. 



Two specimens ; San Joaquin Valley, California (Bliithner). 



6. A. brunneus Dej. Resembles piceus in form but smaller, with the 

 hind angles of the thorax rectangular and slightly prominent. I have 

 never seen any specimen which agrees with the description excepting the 

 type of Dejean in Chaudoir's collection. I have, however, in my cabinet 

 an immature specimen which agrees with my recollection of that type, but 

 which proves to be a Harpalus by the biseriately papillose tarsi. As the 

 Dejean type is a female, a renewed examination is necessary to prove its 

 generic position. 



7. A piceus Menet. In this species the thorax is very little narrowed 

 behind, the posterior angles obtuse. The clypeus has but one setigerous 



