82 



16. SitodreiKi clefuncta. — A single elytron, with its reverse, was found 

 by Mr. Eicbardson west of the Green River Crossing, Wyoming. It is 

 very poorly preserved, more than twice and a half as long as broad, 

 equal until near the tip, which is rounded off; it is traversed by eight 

 or nine very slightly impressed and delicate punctate striie, .1'"'" apart. 



Length, 2. To'"-" ; breadth, LOG""'". 



17. Spermophagus vivificatus. — Two specimens, reverses, but one 

 showing more plainly the upper, the other the under surface, were 

 brought by Mr. T. L. Mead from Castello's ranch. South Park, Colorado. 

 They are in an unusually good state of preservation. But very little 

 of the small head can be seen, either upon the upper or the under sur- 

 face ; the portion exposed is delicately punctured, the punctures being 

 closely crowded, and rather less than one-hundredth of a millimeter 

 in diameter. The antennae show nine joints, which are together longer 

 than the breadth of the prothorax ; the first and second joints are 

 ovate, the remainder more or less obconical; the first four are of nearly 

 equal length, and of about the same length and breadth ; beyond, the 

 joints are subequal among themselves, but much longer than broad. 

 The prothorax is crushed, and although not misplaced, it is difficult to 

 determine its exact form, or whether or not it wholly concealed the head 

 from above. It is more coarsely punctate than the head, the punctures 

 being .025'"'^ in diameter ; the posterior border is broadly angulate, the 

 angle rounded, the outer margin more or less rounded, and the whole 

 prothorax broadest posteriorly. The elytra are very ample, equal, each 

 independently, \ery broadly and regularly rounded at the apex, which 

 does not reach the tip of the abdomen; they are very distinctly but 

 narrowly punctato striate, in nine straight, equidistant complete rows, 

 besides an auxiliary row next the outer margin, for a portion of the dis- 

 tance ; near the tip of the wing, the outer and inner rows curve toward 

 the middle of the apex, and all fade out before reaching it; the entire 

 border of the elytra is marginate. The femora, especially the hind pair, 

 are stout; the hind tibite are considerably shorter than the femora, and 

 there are apparently, on one side, faint indications of the two long tibial 

 spurs, with which the apex of the hind tibite are armed in this genus. 

 The abdomen is exceedingly short and broad, the apical segment pro- 

 truding a little beyond the others and well rounded. 



Length, 5.25™"°; breadth of prothorax, 2™™; of body at middle of 

 elytra, 3.25'"'"; length of antennte, 2.2'^'"; of elytra, 3.75'"'"; breadth of 

 same, 1.35'"'"; length of middle femora, 1.05'""; breadth of same, .28"""; 

 length of hind femora, 1.56'""'; breadth of same, .48"""; length of hind 

 tibiae, 1.02"'"'; distance apart of elytral striee, .265"'"'. 



18. Bruchus anilis. — A single specimen was brought by Professor Den- 

 ton from Chagrin Valley, White River. It consists of two elytra, in 

 natural juxtaposition seen from above. They have a brown color, 

 which is wanting in certain places, but in so irregular a manner that it 

 is doubtless fortuitous; they are furnished with stride, but these, as well 

 as all color, are entirely obliterated in the middle of the wing ; this 

 again is doubtless a defect of preservation, since the sutural edges of 

 the elytra are similarly affected ; the striae are deep, sharply cut, straight, 

 subequidistant, eight in number, fading out at the apex of the elytra, 

 the space between them smooth and arched. 



Length of one elytron, 5"'"' ; breadth of same, 1.9"'"'; distance of stir* 

 apart, .45"'"'. 



ORYCTOSCiRTETES nov. gen. 



This genus belongs to the group of ChrysomeUdcc, of which Raltica 

 111. is the best known representative, the members of which are peculiar 



