COLEOPTERA STAPI 1 V I.I NI I ).K. 507 



LEISTOTROPIIUS Perty. 



LEISTOTROPHUS PATRiARcnicus. 

 Pi. 5, Fitr. 112. 



I : intotrophut patriarchiciw Scndd., Bull. U. 8. Geol. GCORT. Snrv. Terr., II, 78-79 (187C). 



A single greatly crushed and ill defined specimen. Above, tin- In -ad 

 is broader than long, the front very broadly and regularly rounded, the 

 j;i\vs |imjccting triangularly beyond it; the eyes are large, nearly as long 

 ;i> tin- head and just as long as the width of the space between them; tin- 

 whole head is minutely and uniformly granulate. The collar, which is not 

 granulate, is of the same width as the part of the head between the eyes, 

 and al nit halt' as long as the head; on one side of and in direct connection 

 with this are some crushed fragments, apparently of one of the fore coxa; 

 and femora, which distort its appearance. The prothorax is of about the 

 size of the head, quadrate, with rounded corners and a slight elevated rim, 

 without punctures or granulations. The elytra are very short, broader 

 than long, quadrate, squarely truncate at the tip, leaving no signs ,,f ;, n 

 exposed scutellum, faintly and distantly punctulate. The outline of tin- 

 middle; coxa' is impressed through the remains of the insect, showing them 

 to be shaped as in Creophilus and Leistotrophus. The abdomen is as broad 

 as the thorax, not much longer than broad, broadly rounded apirallv, fur- 

 nished with hairs on the upper surface and apical tufts as in Creophilus 

 villosiis (<!rav. ); there are, however, no signs of punctulation. 



Length of fragment, 12 mm ; of head, 2.5 mm ; breadth of same, 3.75 mm ; 

 length of eyes, 2"""; breadth of same (as seen from above), 0.88 ram ; length 

 of tegmina, 1.75"' m ; breadth of same, 2""" ; breadth of abdomen, 3.8 mm ; 

 1. -i i --til <it' middle femora, i'.3""" ; breadth of same, 0.65'"; length of middle 

 coxae, 2.f>""" ; breadth of same, l.l mm ; length of hind femora, 2 mm ; of hind 

 tibia-, 2.{ 



White River, near the Colorado-Utah boundary. One specimen \V 

 Denton). 



S Stephens. 



The two Sperirs de.M-rihed llel'e iVolll Fl< >ri-sal it diller ri Hisideral >1\ 



t'nnii i-arli other in general appearance, l)iit apjiear tn lie -trurtural! \ -imi- 

 lar. Tln-y diller, one more m;nk<-ill\ than the other, from modern -)> 



