AMERICAN COLEOPTERA. 301 



STENOPODIU8 n. g. 



Head small, vertex not prominent, front vertical. Labrum short, truncate; 

 mentum narrow, elongate ; palpi slender, the last joint of the maxillaries longer 

 than the preceding united. Eyes Large, oval. Antennae short, passing very 

 slightly i lie anterior margin of (lie thorax, firsi joint, subglobular,' second longer, 

 obconical; •". 6 equal, as broad as long; seventh obconical, broader than longj 

 eighth in form of an oval obtusely pointed mass, with the sutures handy visible. 

 Thorax broader than Long, base very little wider than apex, sides feebly arcuate, 



apical margin Slightly prolonged at middle and sinuate on each side. Seutellum 



broader than Long, truncate at tip. Elytra oval, one third Longer than wide, 

 apices conjointly rounded, surface with eight rows of punctures on each, the 

 alternate intervals slightly broader and very feebly more convex. Legs moderate, 

 glabrous. Tarsi not dilated, with shorl silken hairs beneath, each two-thirds the 

 length of its tibia, firs! Hire*' joints nearly equal in Length, the third emarginate 



above, fourth as lonn as the others together, with the feebly areualo claws nearly 

 half the length of the joint. 



S. Ilavidiis 11. sp. — Oval, moderately robust, glabrous, body beneath anten- 

 nae and head black, upper surface and legs pale yellow. Head black, a spot above 

 each eye yellow. Thorax broader than long, base very little wider than apex, 

 apex prolonged at middle and slightly elevated, on each side sinuate and deeply 

 impressed, sides feebly arcuate in front, subparallel at basal two-thirds, with an 

 extremely feeble trace of sinuation, base feebly lobed at middle, sinuate on each 

 side, surface coarsely, deeply and rather closely punctured with a small fovea 

 .it each anterior angle. Elytra wider than the thorax, oval, one-third Longer than 

 wide, sides very slightly arcuate, margin feebly serrate, disc convex, each with 



eight rOWS of Coarse punctures, intervals narrow. each alternate slightly widerand 



very little more convex. Body beneath black, shining, abdomen sparsely punc 

 tate, pygidium and a spot on each side of the last ventral yellow. Length .16 



inch : 1 millim. PI. I X, tig. s. 



In form tltis species is shorter and more robust than any in our fauna. 

 The peculiar characters are so many as to make it probably the most 

 easily recognized known Bispide. 'I lie form of the apex of the thorax 

 is especially noteworthy, from the facl that (lie depression along the mar 

 gin on each side of a slight median elevation, appears to lie for the recep- 

 tion of the club of the antennae when at rest. Tin's latter character, 

 together with the aspect of the surface ami the struct lire of the tarsi, 

 render it probable thai the species is snbaipiatic in its habits. 



Occurs in California and Arizona. 



Callispides. 

 Form elongate, subcylindrical. Antennae filiform, eleven-jointed. Tarsi dilated, 

 densely pubescent beneath, third joint deeply bilobed, claws divaricate. First 



ventral suture nearly obliterated at middle. Elytra with striae" of punctures. 



One genus is known in our fauna. 



STEMSPA Baly. 



Antennae 1 1 -jointed, first joint small, subglobular, second obconical. a little 

 longer, third cylindrical nearly as long as the lirsl two, 4-10 suboqual, clovenl h 

 longer and subacute at tip. Head small, front concave with an inter-a liten n.-i 1 



(76) 



