110 NORTH AMERICAN 



equal in length ; first two with two short rather distant fine and excessively 

 feeble carinae. Legs rather long, slender. Length 0.95 mm. 



"Washington, District of Columbia, 1 9. 



This singular species is so different in shape from the usual typical 

 form of the genus, and differs in so many of its minor characters that 

 it almost seems as if it should be placed at least in a subgenus, and as 

 far as possible removed from cannliculatus. The very robust maxil- 

 lary palpi, bilobed labrum, and eyes scarcely visible from above but 

 almost entirely so from beneath, are the most salient of these aberrant 

 characters. 



13. E. cavicollis Lee— Proc. Am. Phil. Soc. XVII. p. 387.— Form 

 moderately robust ; color of head and prothorax dark piceo-rufous, of the 

 elytra, legs and antennae paler, reddish-testaceous ; abdomen darker than 

 the elytra ; pubescence rather abundant, coarse, setiforra and conspicuous ;' 

 integuments polislied, punctate. Head large, very slightly wider than long, 

 truncate anteriorly ; basal angles obsolete ; eyes rather large, moderately 

 prominent ;' interocular surface having two deep straight strongly conver- 

 gent channels beginning opposite the eyes and joined, just behind the 

 strongly raised anterior edge of the epistoma, by a short arcuate groove ; 

 intermediate surface strongly convex ; at the base of the occiput there is a 

 short medial carina, and toward the sides the surface is densely, evenly 

 and very minutely punctate ; antennal tuberculations prominent ; antennae 

 moderately robust, as long as the head and prothorax together, penultimate 

 joint as long as the preceding, twice as wide as long, eleventh as long as the 

 three preceding together. Prothorax widest at one-third the length from the 

 apex where it is very slightly wider than the head and distinctly wider than 

 long ; sides thence very strongly convergent anteriorly and strongly sinuate, 

 sliglitly less convergent posteriorly and nearly straight ; anterior margin 

 much shorter than the base, feebly arcuate, the latter transverse ; disk 

 strongly convex, finely and evenly punctate, punctures strong and widely 

 separated ; near the base there is a very large nude pit-like impression, not 

 connected with the lateral impressions which are \{?ry deep and irregular ; 

 in the middle anteriorly there is a very feeble longitudinal impression which 

 is so slight as to be scarcely visible. Elytra at base just perceptibly wider 

 than the pronotum ; sides feebly divergent ; together transversely truncate 

 behind ; suture about one-half longer than the pnmotum ; disk finely punc- 

 tate, punctures arranged in rows near the suture, very minute ; sutural 

 striae approximate, straight, rather strong ; tliere are also on each elytron 

 at the base three impressed pits, the two exterior being arranged in a nearly 

 longitudinal line, j)rolonged posteriorly by a very feeble impressed channel 

 rapidly becoming obsolete; humeri prominently swollen. Abdominal seg- 

 ments increasing slightly in width ; first slightly narrower than the con- 

 tiguous elytra; surface moderately convex, polished, inipunctate ; border 

 strong ; first two segments having two distant widely diverging prominent 

 basal carinae. Legs rather sliort and robust ; tarsi narrower at base; claw 

 long, rather strongly arcuate, testaceous. Length 1.4 mm. 



