AMERICAN COLEOPTERA. 221 



The rows of punctures on the elytra are usually very feebly de- 

 fined though quite regular, but are traceable in each of the nine 

 examples before me, and in some are quite readily made out. This 

 species resembles amcenus very closely, but the latter is destitute of 

 both discal and marginal stria? and the metasternal lobe is differ- 

 ently emarginate. 



4. K. HMifleiiUM n. sp. — A little less elongate and of somewhat darker color 

 than obsoletus; elytra without striae, either marginal or discal. Metasternal lobe 

 deeply semicircularly emarginate from side to side; sculpture otherwise substan- 

 tially as in obsoletus Length 2.8-3.5 mm. 



Arizona (Fort Grant and Oracle ; Hubbard and Schwarz). The 

 Fort Grant specimens are to be regarded as types. The single ex- 

 ample from Oracle differs in one or two particulars but is probably 

 identical. 



5. E. mi Y til* n. sp. — Elongate-oval, twice as long as wide ; piceous black; 

 evidently, though sparsely and finely punctate. Prothorax densely rather 

 coarsely and uniformly punctate at sides, the punctuation becoming finer and 

 dual toward the middle; elytra without strife, the punctuation dual, the larger 

 punctures mutually distant, from one to two times their own diameters, the 

 interspaces thickly finely punctulate. Lower surface sculptured much like the 

 corresponding portions of the upper. Metasternal lobe broadly not deeply emar- 

 ginate in circular arc. Length 4.5 mm. 



Described from a single specimen sent me by Mr. Beyer, who 

 collected it at Santa Rosa, Lower California 



As compared with amcenus this species is slightly stouter, darker 

 in color and much larger; the finer punctuation is also distinctly 

 more abundant. If any three adjacent larger punctures are so 

 joined as to enclose a nearly equilateral triangle, the space enclosed 

 will be found to contain from four to six of the finer punctures, 

 while in amcenus a corresponding area contains only one or two on 

 the average. 



6. E. iiitiriiiN Lee. — -Elongate-oval, strongly convex, not quite twice as long 

 as wide, black, pronotum sometimes dark rufous, surface throughout polished 

 and glabrous. Punctuation simple, sparse and rather fine, as a rule, but becom- 

 ing closer and evidently coarser toward the sides of the pronotum. Head mod- 

 erately convex, the eyes distinctly larger in the male, as usual, vertex obsoletely 

 carinate. Prothorax strongly narrowed in front, sides nearly straight. Elytra 

 without striae. Surface beneath polished and finely punctate, the punctures be- 

 coming coarser and more numerous toward the sides of the metasternum and at 

 the middle of the first ventral segment, also toward the lateral margins of the 

 following ventral segments, where coarser and finer punctures are intermixed. 



TEANS. AM. ENT. SOC. XXXI. JULY, 1905. 



