Coleopterological Notices, V. 441 



nearly as in subsimilis. Elytra longer than the head and protho- 

 rax, fully three-fourths wider than the latter, nearly as long as 

 wide, with the usual sculpture. Abdomen rather longer than the 

 elytra and fully as wide, of normal structure. Length 2.0 mm.; 

 width 0.7 mm. 



The male in the LeConte cabinet from which I have taken these 

 characters, is in an imperfect condition, lacking the antennae ; it is 

 one of the original Frankenhseuser types. The fifth ventral is 

 broadly, feebly emarginate almost in median two-fifths, the surface 

 bordering the emargination feebly concave, polished and glabrous ; 

 sixth broadly, feebly lobed anteriorly, the lobe fitting the emargina- 

 tion of the fifth, the surface along the edge of the lobe thrown up 

 in a distinct acute and arcuate ridge, bearing an erect fringe of 

 setae, and, behind the ridge, feebly impressed, glabrous and pol- 

 ished. Anal segment with the usual median piece far to the left 

 of the center. 



RAFONUS n. gen. 



This genus resembles Sonoma in general organization and form 

 of the body, but differs greatly in many points, the generic value 

 of which it is difficult to overlook. The head is smaller than the 

 prothorax, the frontal margin broadly angulate, subequal in width 

 to the neck and rather less than one-half as wide as the width 

 across the eyes, the antennal prominences strongly elevated, widely 

 distant and separated by a broad rounded depression, which is not 

 at all sulciform. Immediately behind the line of the antennae there 

 is a very large and extremely deep pit, as in Sonoma, abruptly de- 

 fined throughout its circumference, more acutely rounded behind 

 and subtruncate anteriorly ; there are also two distant nude foveae 

 on the vertex. The maxillary palpi have the first joint very small. 

 The antennae are slender, moniliform, one-half as long as the body, 

 the last three joints abruptly wider, forming a loose, but distinct 

 club. Prothorax slightly transverse, with the usual complex trans- 

 verse, subbasal impression and isolated lateral foveae, without discal 

 foveae. Elytra much shorter than wide, but slightly longer though 

 much wider than the prothorax, the sides strongly divergent. Ab- 

 domen at least three-fourths longer than the elytra, the four first 

 visible dorsal segments gradually increasing in length. 

 Annals N. Y. Acad. Sci., VII, Nov. 1893.-29 



