54 GEO. H. HORN, M. D. 



distinctly punctate. Abdomen feebly shining, sparsely punctate. Anterior tibije 

 smooth in front, tridcntate externally and crenate above, the first tarsal joint 

 longer than the second. Posterior femora with an entire row of very coarse 

 punctures near the posterior border and others nearly as coarse anteriorly, the 

 first tarsal joint a little longer than the next three. Length .34 inch ; 8.5 mm. 



The sj)ecimen before me is a female, and has the spur of the ante- 

 rior tibia acute. 



The specimen referred to depressus varies from the descriptions in 

 having the elyti'a slightly opaque near the apex, but without any 

 trace of pubescence as in luridus. The first three elytral stria are 

 entire, the fourth curves to join the sixth, the latter prolonged, grad- 

 ually becoming effaced near the apex. The unique before me belongs 

 to the variety described by Erichson as airamentarhis, and from the 

 careful discussion of the relation of this Avith the true depressus by 

 Baron Harold (Ann. Fr. 1862, p. 301) the reference of my specimen 

 to this species is made. In a male specimen, from Eurojoe, just sent 

 me by Dr. Hamilton, I observe that the slight variation alluded to 

 is purely sexual, the male being more shining, while the thorax is 

 less closely punctate. 



One specimen, New York, given me by Mr. Aug. Merkel. I have 

 not heard of any other specimens, and it is barely possible that this 

 may be an accidental introduction. 



Group K. 

 Scutellum small. Head convex, not tritubereulate, but very 

 roughly punctured, clypeus with a more or less distinct transverse 

 carina. Anterior tibiae tridentate, very indistinctly serrulate above, 

 the tarsus with first joint a little shorter than the second. Posterior 

 tibise fimbriate with unequal spinules, the first tarsal joint not as 

 long as the next three. Mesosternum not carinate. 



The species forming this group associate themselves naturally not 

 only by their characters, but also by their appearance. They are as 

 follows : 

 Clypeus emarginate at middle, without teeth. 



Head bicolored, sides of thorax conspicuously paler, the elytra much paler than 



thorax scabriceps. 



Head brown, thorax conspicuously coarsely punctured, the sides scarcely paler. 



nanus. 

 Clypeus emarginate and acutely dentate each side. Uniform ferruginous brown. 



acerbus. 

 In these three species it will be observed that the terminal joint of 

 the maxillary palpi is much stouter, i.e. more fusiform than is usual 

 in the o;enus. 



