146 BULLETTX (i3, UNITED STATES XATTONAL MUSEUM. 



cliaracters are obsei'A'ed in several females, while in others the pos- 

 terior spur is just noticeably the thicker. 



The variation in length can he accounted for l)y the wear due to 

 age. yet the variation in thickness can not be put aside in that way: 

 such might l)e looked upon as fortuitous, and due to the instability 

 of certain inherent morphological tendencies. 



Tn the series before me the general character of the scidpturing is 

 <)uite constant. 



The mentum is \ariable and coinparat ixely smaU. triangular with 

 apex subti'uncate. or somewhat semicircular, the surface is plane to 

 foveate laterally with a more or less well-marked median ridge. 



The prosternum is more or less feebly or strongly convex antero- 

 posteriorly between the coxa*, and moderately produced posteriorly, 

 usually vei-tically truncate with angle deflexed and nuicronate; rarely 

 rounded bchintl. with nuicro obsolete. 



Th(> mesosternum is arcuately declivous and quite l)i'oadly and 

 ileeply concave. Roth sterna ai'e clothed with rather h)ng hairs. 

 External boi'(k^i"s of the anterior tibia> are distinctly carinate nearly 

 to the apex, and on the middle and posterior tibiie nearly to the mid- 

 dle, a character more strongly developed here than in Mi'sufa. 



The anterior tibia' are not noticeably arcuate, although the external 

 borders have a gentle aiul evenly arcuate outline. The tibial grooves 

 of the femora are not usually strongly defined, and most always more 

 or less subasperately punctate and opaque. In the s})ecimens from 

 Oregon the grooves are rather more strongly detined than in any of 

 the other examj)les before me. 



The first joint of the posterior tarsi is eiiiial to the second and third 

 taken together: the latter two are of eipial length. 



Subgeniis PSEUDELEODES, new. 



This subgenus is erected to receive a single species which is remark- 

 ably distinct among its congeners. It is based, as ustuil, mainly u])on 

 the female genital characters. .Vlthough the general facies of the 

 species is quite unique, it is extremely difficult to portray in words. 

 The general subgeneric characters may be enumerated as follows: 

 Coarsely and tuberculately sculj)tured, not pul)escent. Inuneri obsolete, 

 anterior femora nuitic: and the anterior tarsi simj^le beneath. .Vbdo- 

 men on the same plane as the sterna, that is. horizontal. 



Siilxjeneric (jen'dol chamcters. luaJe. — Apicale of the edeagophore 

 triangular, evenh- convex above, with a median longitudinal groove. 



Female. — Genital segment short and parabolic in outline. 



Valn/Ia. — Dorsal plate subobovate to oval, extending apically upon 

 the apex beyond the appendage; sides not reflexed. Apex with the 

 internal lobe developed. .\.pi)endage short, mammilliform, projecting 

 from beneath the external border of the apical margin of the dorsal 



