294 GEO. H. HORN, M. D. 



but not carinate. Metasternum moderate in length, the side pieces narrowly 

 visible, posterior coxse contiguous. Abdomen with six segments. Legs short, 

 moderately stout, tibiae spinulose externally but not strongly. Tarsi variable in 

 form, joints 5 — 5 — 4 in both sexes. Body short, oval, convex, not contractile. 



This genus seems very naturally the intermediate between those 

 wenera with the tarsi similar in the sexes and those in which 

 they differ, with strong relationship with Anisotoma especially those 

 species allied to ohsoleta, it seems also equally close to Liodes and 

 Amphicyllis, 



Our species are distinguished in the following manner: 

 Elytra punctured over the entire surface, the strise of punctures often entirely 



obliterated picipennis Lee. 



Elytra with strise of punctures, the intervals smooth and shining. 



Tarsi slender blandissima Zimm. 



Tarsi very short and much compressed egena Lee. 



These all belong to the fauna of the Atlantic region. 



C. picipennis Lee. — Oval, slightly oblong, castaneous to pale brown, 

 shining. Head punctate. Thorax more than twice as wide as long, narrowed 

 in front, apex emarginate, base arcuate, hind angles distinct but obtuse, sides 

 moderately arcuate, surface sparsely finely punctate. Elytra broadly oval, 

 continuing the curve of the thorax, surface irregularly punctate, sometimes 

 with larger punctures forming faint rows near the sides and suture, sutural 

 stria finely impressed behind the middle. Body beneath punctate, abdomen 

 much more finely. Length .06— .08 inch; 1.5—2 mm. 



j^ale. — Tarsi not dilated. Posterior femur gradually broader from the coxa 

 to the knee, the outer condyle forming an acute dentiform process. 



Female. — Posterior femur not dilated and without tooth. 

 In this species the tarsi are slender, the posterior slightly com- 

 pressed, the tibiae are normal, the posterior however less spinulose 

 than the middle. 



Occurs from Pennsylvania and New York westward through Michi- 

 gan to Nevada and Vancouver. 



C blandissima Zimm.^ — Resembles the preceding in form and color. 

 Head and thorax very sparsely and finely punctate. Elytra with eight entire 

 strise of moderate punctures, not very densely placed, the intervals flat, very 

 rarely with some fine punctures. Body beneath very coarsely punctate, each 

 abdominal segment with a row of coarse, deep, closely placed punctures along 

 its basal margin. Length .06— .08 inch; 1.5—2 mm. (PI. VII, fig. 8). 



Male.—K.?, in ■picipennis. The inner spur of the middle tibiae is long and 

 strongly arcuate at its base. (PI. VII, fig. 8 a). 



Female. — As in picipennis. 



The structure of the legs and tarsi is as in 'picipennis. 

 Occurs in North Carolina and District of Columbia, where the 

 specimens taken by Mr. Ulke are much larger and liner than the 

 type described by Zimmermann. 



