COLEOPTEEA— STAPHYLINID^. 509 



thinly clad with rather long hairs, which are darker than the also sparse 

 hairs of the abdomen ; abdomen with parallel sides and rounded tip. 



The species is remarkable for its slenderness, the brevity of the 

 antennjB, and the stoutness of the mandibles. 



Length, 8.5"""; breadth, l.S"'". 



The species was described from other specimens than the one figured. 

 It is named after the Western explorer and botanist, Prof W. H. Brewer, 

 of Yale College. 



Florissant. Five specimens, Nos. 3863, 5800, 8259, 13635 and 14161, 

 besides 1.381 from the Princeton Collection. 



GYROPHtENA Mannerheim. 



Gyroph^na saxicola. 



PI. 5, Figs. 123, 124. 

 Gyrophwiui saxicola Soudd., Bull. U. S. Geol. Geogr. Surv. Torr., II, 78 (1876). 



A single specimen of a species allied to G. vinula Er. has the head 

 well rounded, witli large round eyes and a rounded labrum. The pro- 

 thorax is but vaguely defined on the stone, and is apparently of about 

 equal breadth with the head, and shorter than broad. The elytra are of 

 equal length and breadth, each with a pair of longitudinal, straight, deli- 

 cate, raised lines. There is no sculptming of the surface ; no wings can 

 be seen, nor legs, and the indistinctly preserved abdomen is shaped as in 

 G. vinula. 



Length of body, 1.84"'™. 



Chagrin Valley, White River, Colorado. One specimen (W. Denton). 



HOMALOTA Mannerheim. 



HOMALOTA RECISA. - 

 PI. 8, Fig. 14. 



The head is tolerably large, produced and tapering anteriorly but well 

 rounded at tip ; eyes globular, moderately large. Thorax a little broader 

 than the head, subquadrate, broader than long (but this feature exaggerated 

 in the figure), with gently rounded sides and profusely and rather delicately 

 punctate surface. Elytra together considerably broader than the thorax, 

 about as long as their united breadth, with scattered short hairs apparently 



