OOLEOPTEKA— STAPHYLINIDJ3. 507 



LEISTOTROPHUS Perty. 

 Leistotkophus patriarchicus. 



PI. 5, Fig. 112. 



Leiatotrophus patriarchicus Scudd., Bull. U. S. Geo}. Geogr. Surv. Terr., II, 78-79 (1876). 



A single greatly crushed and ill defined specimen. Above, the head 

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

 jaws projecting triangularly beyond it ; the eyes are large, nearly as long 

 as the head and just as long as the width of the space between them ; the 

 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 about half 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 coxae 

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

 size of the head, quadrate, with rounded coi'ners 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 of an 

 exposed scutellum, faintly and distantly punctulate. The outline of the 

 middle coxse 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 apically, fur-^ 

 nished with hairs on the ujiper surface and apical tufts as in Creojihilus 

 villosus (Grav.) ; there are, however, no signs of punctulation. 



Length of fragment, 12°""; of head, 2.5°"°; breadth of same, 3.75"°"; 

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

 of tegmina, 1.75°""; breadth of same, 2°"°^; breadth of abdomen, 3.8°'°'; 

 length of middle femora, 2.3°"°; breadth of same, 0.6.5™"; length of middle 

 coxse, 2.5°""; breadth of same, l.l™"; length of hind femora, 2™™; of hind 

 tibic^, 2.5°'°'. 



White River, near the Colorado-Utah boundary. One specimen (W. 

 Denton). 



QUEDIUS Stephens. 



The two species described here from Florissant differ considerably 

 from each other in general appearance, but appear to be structurally simi- 

 lar. They differ, one more markedly than the other, from modern species 



