COLEOPTERA. 57 



sides feebly divergent posteriorly and feebly arcuate, somewhat longer than 

 the width at base ; together broadly and rather feebly emarginate posteriorly ; 

 suture one-fifth as long again as the pronotum ; surface feebly impressed 

 at the base on the suture, coarsely, closely, variolately, and irregularly 

 punctured ; punctures coalescent longitudinally, interspaces flat, shining, 

 generally very narrow. Abdominal segments uniformly and rather rapidly 

 decreasing in width, first very slightly narrower than the contiguous elytra ; 

 border prominent ; surface coarsely and feebly punctulate anteriorly ; very 

 finely punctulate posteriorly ; transverse carinae tricuspid, middle cusps 

 long, well developed, and aciculate, lateral very rudimentary, intervals 

 feebly sinuate. Legs moderate, piceous-brown throughout ; first joint of 

 the posterior tarsi slightly more than twice as long as the second, as long 

 as the next three together, second slightly longer than the third. Under 

 surface of abdomen piceous-black, paler toward the vertex. 



Male. — Posterior edge of the fifth ventral segment feebly emarginate in its 

 middle third, emargination evenly rounded throughout, twelve times as wide 

 as deep, contiguous surface very feebly and cylindrically impressed through- 

 out anteriorly, borders of the impression densely ciliate ; sixth segment 

 sinuate at apex, sinus slightly more acutely rounded than the apices, twice 

 as wide as deep, surface of segment not impressed ; seventh segment broadly 

 and evenly emarginate at apex, emargination densely fringed with short, 

 cinereous setae. 



Female. — Unknown. 



Length 3.0 mm. 



Oregon, 1. 



I have retained the manuscript name attached by Mr. Crotch to 

 the unique specimen. 



38. S. viciliUS n, sp. — Form rather slender. Pubescence extremely 

 sparse, short, and fine, setiform, cinereous. Head moderate, slightly more 

 than twice as wide as long ; interocular surface very feebly depressed, two 

 and one-third times as wide as the eye ; punctures not coalescent, fine, very 

 closely crowded near the eyes, coarser and more distant along the middle ; 

 longitudinal elevation scarcely more than one-half as wide as the lateral 

 portions, rather strongly but evenly convex ; ocular lines meeting at two 

 lengths in advance ; antennae very slightly longer than the width of head, 

 robust, club moderate, basal joint black, remainder dark piceous-brown ; 

 third joint one-fourth as long again as the fourth, fourth and fifth equal, 

 sixth and seventh equal in length, the latter thicker, eighth slightly elon- 

 gated, as wide as the seventh, joints of club increasing in length, last two of 

 equal thickness, last joint conoidal ; first joint of maxillary palpi pale testa- 

 ceous, second and third slightly darker, piceous. Prothorax widest at the 

 middle, where it is perceptibly narrower than long ; sides thence moderately 

 convergent posteriorly and nearly straight ; anterior margin slightly longer 

 and more arcuate than the posterior ; surface nearly evenly convex, rather 

 finely, closely, variolately, and irregularly punctured, punctures not coales- 

 cent ; canaliculation very narrow, shallow, irregularly outlined, beginning 

 slightly before the middle and equal in length to one-half the pronotum. 



