87 



front of protborax, aud all the legs gone, and the elytra a little broken. 

 The prothorax is profusely and uniformly pitted with moderately shal- 

 low pits, averaging .06""" in diameter; the elytra are traversed by lon- 

 gitudinal costfe, five of which are much more prominent than the others, 

 with sharp, unbroken edges and equidistant from one another, the outer 

 ones in close proximity to the sutural and outer edges ; the other costaj 

 are obscure, slightly elevated, rounded, broken to a greater or less 

 extent into raised points ; midway between the first and second promi- 

 nent costaj (countiug from the outer margin) there is an exactly similar 

 prominent costa on the basal third of the elytron ; the prominent costte 

 are .2""" apart. 



Length of the prothorax, .88""" ; height of same, 1.04"'"' 5 length of 

 elytron, 1.9G™"'; breadth of same, 1.08""^ 



30. EiirUinus occultus.— Three specimens of this species were found by 

 Mr. Mead, near Castello's ranch, South Park, Colorado. It seems to be- 

 long to the Baridiides of Lacordaire, and in general appearance more re- 

 sembles the species of the genus EurUnus than those of any other group 

 known to me ; it is, however, smaller than they, and it may have greater 

 affinities with the Ceutorhynchides. In any case it seems to be a 

 strictly American type. The first specimen exhibits only the upper sur- 

 face of the body with a portion of the rostrum. Nothing can be seen of 

 the head excepting the base of the snout, which is slender (perhaps 

 slenderer than usual for Eiirhinns), with two longitudinal furrows upon 

 the upper surface occupying, together, nearly the whole width of the 

 rostrum. The prothorax is tumid, with sides subparallel close to the 

 posterior extremity, but immediately beyond narrowing rapidly, but 

 with convex outline toward the head ; the surface is uniformly and very 

 profusely punctate (granulose on the stone, which is a cast), the punc- 

 tures averaging .04'"'" in diameter. The elytra are in place, together 

 not much broader than the prothorax, parted in the apical third, each 

 independently rounded, produced to a blunt tip, and provided with six 

 equidistant, slightly raised slender ridges (as now seen on the stone), 

 .30"'™ apart, interrupted slightly at regular and short intervals (so that 

 the original doubtless had series of longitudinal stabs). 



Length of body, exclusive of rostrum, 6"'"'; of the visible part of the 

 rostrum, .75'""' ; breadth of same, .36"'"' ; length of prothorax, 1.4"'"' ; 

 greatest width of same, 3.15"""; length of elytra, 4.3'""'; width of 

 same, 1.75""". 



A second specimen is very similarly preserved, aud shows the same 

 characteristics. In addition, however, the eyes and some of the legs 

 may be seen. The former are very small, .16""" in diameter, and circu- 

 lar ; the legs are rather stout, the femora tumid ; the width of the head 

 at the eyes is .8'""'. 



A third specimen is much more poorly preserved ; it is similar to the 

 first, but in relief; more of the rostrum can be seen, and one of the hind 

 femora, which is very stout, being LSG'"™ long and .08"'"' broad. 



31. BrackytarsKS pristiuus. — A single specimen was obtained by Mr. 

 Eichardsou, with the other specimens found by him in ^Yesteru "Wyom- 

 ing. It is very poorly preserved, and fragmentary. The head is round- 

 ish, with small circular eyes .08"'" in diameter. The prothorax is sub- 

 quadrate, considerably larger than the head, and nearly as broad as the 

 body at the base of the elytra ; the latter are broken. 



Length of fragment, 2.1"""; breadth of same. .84'""': length of head, 

 39mm. breadth of same, .4"""; of thorax, .64'"'". 



