NO. 1982. FOSSIL COLEOPTERA FROM FLORISSANT— WICKHAM. 297 



Genus BRUCHUS Linnaeus. 



BRUCHUS DORMESCENS, new species. 



Plate 25, fig. 4. 



Form short and stout, sculpture almost effaced except that the 



elytra are marked with fine shallow striae which seem to be composed 



of series of very elongate punctures. Head and thorax not separable 



in this specimen, the former may be bent under and hidden. The 



posterior prothoracic margm is apparently only regularly arcuate 



mstead of being lobed. Antennae with eight exposed jomts, strongly 



serrate. Posterior thigh without visible tooth, hmd tibise strong y 



arcuate and with the tip prolonged into a spme-like point. Length, 



3.75 mm. 



yypg._Cat. No. 59661, U.S.N.M. . 



In form, this species may be compared with the recent B. discoi- 

 deus but the sculpture is of a weak type, judgmg by the elytral 

 stri^ The antennae are quite different though of a type common m 

 this genus which is remarkable for the diversity of structure offered 

 by these organs. 



BRUCHUS EXHUMATUS Wickham. 



One specimen, agreeing with the type and showing, in addition, 

 the antenna, which I have figured elsewhere. 

 Cat. No. 59662, U.S.N.M. 



MIOSTENOSIS, new genus. 



Recalls the Pal^arctic genus Stenosis in form, and agrees with it in 

 antemial structure, but differs m the coxae and the shape of the 

 intercoxal process of the fii'st ventral abdominal segment. In this 

 new genus the anterior and middle coxae are closely approxnnate, 

 though apparently not actually contiguous, while the hmd coxae 

 meet on the median fine. The metasternum is moderately elongate 

 and the uitercoxal process of the first ventral is sharp and short. 

 The type and only loiown species is M. lacordairei, described below. 



MIOSTENOSIS LACORDAIREI, new species. 

 Plate 26, fig. 1. 

 Form elongate, narrow, in general resembling Arseoschizus, Stenosis, 

 or Dacoderus. Head subrectangular, longer than broad. Eyes 

 rather large. Antennae eleven jointed, jomts submonihform but 

 transverse, third longer than the second or the fourth, distal articu- 

 lations not forming a distmct club, terminal jouit smaU but distinct 

 and probably free. Prothorax broadest m front of the middle, 

 arcuately narrowed, sHghtly to apex and more so to the base, anterior 

 angles acute but not projectmg. Front and middle coxae rounded, 



