460 Coleopterological Notices, V. 



BIBLOPORUS Thomson. 



This genus was redescribed by me under the name Faliscus (Cont. 

 Col. N. A., II, p. 94), as correctly stated by Brendel in his recent 

 monograph ; it is widely distinct from Euplectus in the structure 

 of the prosternum and pronotum. In B. hicanalis the rudimentary 

 second tarsal claw is quite distinct, although not large enough to 

 ally it with the trichonychide types of the tribe. 



EUTYPHLUS LeConte. 



Related to Bibloporus in the long carinate prosternum, but de- 

 parting widely in pronotal structure and in the sexual modification 

 of the eyes. It was described by me (1. c, p. 94), from the male 

 especially, under the name Nicotheus. The two species in my 

 cabinet may be recognized by the following characters taken from 

 the female : — 



Head relatively less transverse, the tempora longer and moderately conver- 

 gent ; dorsal carinse of the first segment strongly divergent, distant by one- 

 third of the discal width siniilis 



Head very transverse, the tempora much shorter and extremely convergent ; 

 carinje of first dorsal less divergent and separated by nearly one-half of the 

 discal width proiuiliens 



In both of these species there is a very fine pronotal carina ex- 

 tending from the transverse sulcus to the basal mai'gin, as in the 

 American species of Bibloplectus. The males seem to be extremely 

 rare. The ventral segments are seven in number in both sexes, the 

 last three short, the anal segment of the male enclosing an elongate 

 flat pygidium as in Thesiastes. The terminal joint of the antennae 

 consists of two distinctly defined parts, a large basal segment and a 

 narrow conical apical portion placed far within the lateral margins 

 of the former; this structure is more pronounced in the females 

 than in the males, and probably offsets the more defective vision of 

 that sex. 



E. proniineilS n. sp. — Slender, somewhat convex, polished and bright 

 rufo-testaceous throughout ; pubescence rather long, coarse, shaggy but not 

 very dense. Head short, as wide as the prothorax and scarcely more than 

 two-thirds as long, transverse, abruptly narrowed before the very prominent 

 acute tubercles bearing the rudimentary eyes ; tempora very strongly con- 

 vergent ; fovese well developed, at basal third, distant by nearly one-half the 

 maximum width, each continued forward in a deep oblique channel, the two 



