372 MEMOIRS ON THE COLEOPTERA 



black elytra, red abdomen, piceous-black legs, with pallid femora 

 and with the antennae shorter, deep black throughout and clothed 

 more densely with much longer erect black hairs; the apex of the 

 abdomen has a very large triangular emargination, occupying the 

 entire tip; in the type of apicalis the abdominal tip has a smaller 

 emargination, the bottom of which is not very acute and a supple- 

 mentary segment is exposed through the emargination. I am not 

 prepared to say that these two specimens are sexes of one species 

 by any means, and do not know whether the second may be ven- 

 tralis Hald., or not. V entralis is said by LeConte to be the male of 

 tenuipes. It is not very probable that the second specimen men- 

 tioned above, can be the male of apicalis, for the antennae are 

 shorter and the eyes much more widely separated on the front. 

 The two specimens were not taken at the same time of the year, 

 the type of apicalis being dated May 4, 1912, while the smaller one 

 was reared and appeared Dec. 30, 1911. 



LUCANID^. 



Of Ceruchus MacL., there are three species now on our lists, the 

 well known and abundant piceus Web., of the Atlantic regions and 

 striatus and punctatus of LeConte, of the Pacific coast fauna. The 

 following species is allied to piceus but has elytra more nearly as 

 in striatus: 



Ceruchus virginiensis n. sp. Male, when fully developed, as broad 

 as in the similar stage of piceus but more elongate, rufo-piceous through- 

 out, the elytra deep black; integuments shining, glabrous; head about as 

 wide as the prothorax, almost as in piceus throughout, except that the 

 mandibles are much less arcuate, the opaque mentum similarly turned 

 upward in plane anteriorly but with the median prominence at base 

 narrower and more abruptly denned; antennae missing in the type; pro- 

 thorax as in piceus throughout ; elytra evidently wider than the prothorax, 

 nearly one-half longer than wide, one-half longer than the head and 

 prothorax combined, omitting the mandibles, parallel, circularly rounded 

 at apex, the striae rather deeply impressed throughout and with moderate, 

 close-set punctures, the convex intervals coarsely, deeply, unevenly and 

 rather closely punctate; intervals 6-8 confused and obliterated basally 

 to the humeri, forming an even and convex, evenly punctured surface; 

 humeral angles sharply marked but not prominent; under surface nearly 

 as in piceus but with the last abdominal segment relatively longer and 

 more arcuate at apex. Length, exclusive of mandibles, 14.4 mm.; 

 width 5.5 mm.; length of mandibles 3.5 mm. West Virginia (White Sul- 

 phur Springs). 



