184 LENG AND HAMILTON. 



claws are divaricate ; the head is similar in the sexes, eyes coarsely 

 granulate and deeply emarginate, front broad, vertical, antenna? 

 widely separated at base, longer than the body in both sexes, not 

 ciliate beneath ; thorax strongly angulate at the sides ; scntellum 

 semicircular ; apices of the elytra entire, rounded ; coxse all widely 

 separated. 



P. fabra Horn, 1894. Coleop. Baja Cal. (Pr. Cal. Acad. Sci. ser. 2, iv, 404. 



Length 9.5 mm. = .38 inch. Habitat. — Arizona south of Tucson. 



■' Dull brown, clothed with short, fine, brownish pubescence ; elytra with short, 

 erect ])lack hairs, arising from evenly disposed muricate punctures. Head finely 

 and moderately closely punctate. Thorax much broader than long, sides strongly 

 angulate at middle, in front of angulation the sides are oblique, behind sinuate, 

 surface finely punctulate and pubescent, with short erect hairs arising from 

 sparsely placed coarser punctures. Elytra very minutely punctulate and fir.ely 

 pubescent, with erect hairs arising from muricate punctures equally placed over 

 the surface, but not in striae. Body beneath and legs paler, sparsely finely punc- 

 tate and pubescent," Horn.] " Ham." 



ESTOIiA Fairm. is the only genus in the group ESTOL^. 

 E. sordida Lee, 1873, New Species (S. M. C. No. 264), p. 237. 



Length 8-13 ram. = .32-.52 inch. Habitat. — Cape San Lucas, L. Cal. 



Uniformly clothed with yellowish brown recumbent hair inter- 

 mixed with short, suberect, gray hairs proceeding from the punc- 

 tures ; prothorax armed with long, acute, lateral spine ; elytra par- 

 allel, rounded at apex ; antennte one-half longer in % and but little 

 longer than the body in 9 . 



IIOPL.OISIA Muls. alone represents grouj) HOPLOSI^. 

 H. niibila Lee, 1862, Proc. Ac. Phil, p.- .39. 

 Leugtli 9-12 mm. = .36-.48 inch. Habitat. — New York, Canada. Michigan, 

 Illinois. 



The pubescence is gray mottled with black, and there are short, 

 scattered, erect hairs on the elytra ; the antennae are thinly fringed 

 beneath wjth hair ; the lateral spines of the })rothorax are large and 

 situated at the middle; elytra subparallel, separated, rounded at 

 apex ; antenuie longer than the body S , about as long tis body 9 , 

 the scape is stout, clavate, much shorter than third joint. Breeds 

 in dry beech twigs in Michigan (Schwarz) ; baswood (^Tilia ameri- 

 caiia) LeConte.] " Ham." 



({roup III. POGONOCHERI. 



Two genera occur in our fauna separated as follows : 



Flying hairs long; prothorax with lateral spines PogOiiOC'lierus. 



Protho7-ax with feebly rounded sides, ])ubescence short EcyrilS. 



