238 GEO. H. HORN, M. D. 



placed; sides sparsely finely punctured ; elytra wider and longer than the thorax, 

 longer than wide conjointly, densely finely punctured, very feebly shining, finely 

 pubescent; abdomen a little more finely and as densely punctured as the elytra; 

 beneath less densely punctured. Length .20 inch : 5 mm. 



Male. — Not seen. 



Female. — Anterior tarsi slightly dilated ; last ventral entire. 



More closely related to histriatus than any other, yet plainly distinct 

 by many characters. 



Occurs on the California sea-coast. 



C ffemoralis Maklin. — Form slender, depressed, piceous, sub-opaque, femora 

 and coxse testaceous ; antennse piceous, nearly as long as the head and thorax 

 joints 3-10 gradually decreasing in length, joints 8-10 as wide as long ; head quad- 

 rate, opaque, aliitaceous, median space less punctured ; sides coarsely and closely 

 punctured; beneath less coarsely punctured than above, sub-mentum shining; 

 thorax not wider than the head, longer than wide, narrower posteriorly ; sides dis- 

 tinctly sinuate, median space not more convex, not distinctly limited, punctures 

 at sides dense and rather fine : elytra wider and longer than the thorax, conjointly 

 longer than wide, densely finely punctured, but not opaque, finely pubescent; 

 abdomen densely finely punctured, more shining beneath, finely pubescent ; femora 

 and coxse pale, tibise and tarsi piceous. Length .24 inch ; fi mm. 



Male. — Not seen. 



Female. — Anterior tarsi slightly dilated; last ventral entire. 



At first sight this species resembles hi.'ifriafus, but is easily known by 

 the color of the legs and by the indistinctly limited median space of the 

 thorax. 



Occurs on the coast of Alaska. 



C sericeus Holme. — Form slender, depressed, piceous, nearly black, opaque ; 

 antennffi piceous, nearly as long as the head and thorax, joints 4-10 nearly square; 

 head quadrate oval, a median smooth space broader on the occiput; sides rather 

 coarsely punctate; beneath punctate at the sides, nearly smooth at middle, sub- 

 mentum sub-opaque; thorax as wide as the head, longer than wide, very little 

 narrower posteriorly ; sides feebly sinuate, median smooth space well defined, but 

 not limited by a median row of punctures, more convex, especially posterini-ly, at 

 sides finely punctate, the punctures less dense anteriorly ; elytra longer and wider 

 than the thorax, longer than wide conjointly, very densely finely punctured and 

 opaque, finely pubescent; abdomen above and beneath very densely finely punc- 

 tulate, more shining than the elytra. Length .14 — .10 inch; .3.5 — 4 mm. 



Male. — Anterior tarsi moderately dilated ; last ventral segment with an oval 

 emargination. 



Female. — Anterior tarsi slightly dilated ; last ventral entire. 



A common European species, apparently rather rare with us. The 

 American specimens are more slender than the European, but do not 

 seem to differ otherwise. The specimens before me are from an uncer- 

 tain locality, but possibly from Coney Island, near New York. 



