H YMENOrX 1<; R A— ia)UM low /E . 617 



LI0ME'I\)1'ITM Mayr. 



LlOMETOPUM PINOTIE. 

 PI. 5, Fig. 10. 



Liometopiim jiingiie Sciuld., Bull. U. ,S. Geol. fieogr. Surv. Terr., Ill, 742-74H (1877). 



The single sj^ecimen representing this species is a male, as the number 

 of abdominal segments show : but the wings are lacking. The insect is 

 viewed from above. The head and thorax are slightly darker than the 

 abdomen, but otherwise the whole body is uniformly fuscous, somewhat 

 darker than the stone. The head is very small, subquadrate, slightly 

 broader behind, and the posterior angles nearly rectangular ; the anterior 

 margin of the head is broadly and pretty regularly rounded, and the whole 

 head is of about equal length and breadth. The thorax is ver}^ regularly 

 ovate, broadest next the insertion of the front wings (traces of the origin of 

 which can be seen), nearly twice as long as broad, rapidly tapering on the 

 metathorax. The peduncle, as seen from al)0ve, is square, half as broad as 

 the head, the hinder edge showing by its thickening that it was probably 

 elevated at this point. The abdomen is plump, rounded ovate, scarcely less 

 rounded posteriorly than in front, only one quarter longer than broad, 

 broader than the thorax, composed of six segments, of which the first, third, 

 and fourth are about equ;d in length, and the second half as long again. 



Length of whole body, 7.5'""' : of thorax, 3'""' : breadth of same, 1.8™"' ; 

 of peduncle, 0.9'""' ; of abdomen, 2.3"'"' ; length of hind femora, 4..'!'""' ; 

 breadth of same, CSG""". 



On account of the smallness of the head, I venture to place this insect 

 in the genus Liometopum. It lias the aspect of a Hypoclinea, but the head 

 is only half as broad as the thorax. 



Fossil Canon, White River, Utah. One specimen. (W. Denton.) 



A specimen from Green River, of precisely the same size and general 

 appearance and pretty certainly belonging to the same species, is also wing- 

 less and has no legs preserved, but the thorax is rather profusely (;lotlied 

 with exceedingly delicate very short hairs. 



Green River, Wyoming. One specimen, No. 2(j2 (Dr. A. S. Packard). 



