136 AMERICAN COLEOPTERA 



extraordinary character, which is again seen in Adistemia watsoni, 

 the front tarsi alone, however, being here affected. 



The study of this genus has proved of singular interest to me, and 

 I much regret that our fauna contains so few of these odd little 

 creatures, all of which, indeed, with the apparent exception of quad- 

 rifoveolata, have been introduced through commerce. Their separa- 

 tion is perfectly simple, as will appear below. 



Under side of body, at least of metasternum and abdomen, virtually inipunc- 

 tate; labrum not inclosing epistoma at sides. 

 Antenna] club triarticulate. 



Prothoras much narrower than the elytra. 



Elytra each with six rows of punctures, the third and fifth intervals cos- 



tate qiiadrifoveolata. 



Elytra each with seven rows of punctures, intervals not costate. 



rufieollis. 



I'rothorax but slightly narrower than the elytra. 



Eyes minute, situated at about their own length from the hind angles of 

 the head. 



Elytral intervals 3-5-7 costiform costnlata. 



Elytral intervals suhequal, not costiform. form narrower- . filiform i*. 

 Eyes much larger, occupying the hind angles: tempora wanting, .argns. 

 Antennal club Inarticulate. 



Pronotum without anterior discal fovea intermedia. 



Pronotum with a large, rounded, more or less deep anterior discal fovea. 



til ii m. 



Underside of body, except the abdominal apex, coarsely, closely punctate; 



labrum inclosing the epistoma at sides elegans. 



Gordicollis Mann, is unknown to ns. It is more than likely that 

 it is not different from ruficollis. 



C qnsidrifoveolata sp. nov. — Elongate, parallel, subdepressed, rufotes- 

 taceous Head longer than wide, trapezoidal, the epistoma not dilated at sides; 

 b. ilium prominent and rather deeply emarginate; eyes minute, composed of few 

 lenses, and situated very near to the hind angles, which are nearly right; tem- 

 pora subequal t < » the eyes; surface finely rather closely punctate, and with a 

 fciveiform impression each side at about the middle. Antenna- short and stout. 

 not attaining the hind margin of the protliorax ; basal two joints suborbicular, 

 the first larger, joints 3 8 narrower than the second, subglobular, the outer ones 

 a little transverse: club 3-jointed, somewhat gradually formed, the joints succes- 

 sively wider, ninth and tenth transverse, eleventh as long as wide. Protliorax 

 but little wider than the head, as long as wide, sides feebly arcuate and a little 

 convergent posteriorly, disk finely, not very closely punctate and four foveolate, 

 the anterior foveae larger and connected by a shallow transverse groove. Elytra 

 nearly twice as wide as the protliorax. subparallel and about equally obtusely 

 rounded before and behind; each with six rows of very large, deep punctures, 

 the intervals narrow, the third and fifth wider and costate, the latter strongly 

 so. All the intervals appear to bear short, fine, suberect hairs. Beneath suhim- 

 punctate, the presternum with a few fine punctures in front; metasternum short, 



