208 DESCRIPTIONS OP NEW SPECIES. 



AXTHOPIIILAX LEC. 



535. A. tenebrosus. Niger, subuitidus, capite thoraceque confertim 

 subtilius punctatis, hoc antice posticeque modice constricto, tuberculo 

 lateral! brevi obtuso ; elytris ( 9 ) thorace latioribus, parallelis apice 

 rotuudatis, antice parce fortiter, versus suturam et poiie medium sub- 

 tiliter punctatis. Long. 12 mm. 



One female ; southeastern California, Dr. Horn. Not unlike 

 in form the stouter species of Acmseops, but the eyes are larger, 

 subtriangular, and strongly and broadly emarginate at the antero- 

 interior side. The antennae are a little more than half the length 

 of the body, and stout ; the 4th joint is two-thirds as long as the 

 5th, and a little shorter than the 3d. The punctures of the head 

 and prothorax are rather fine, and the latter is not channelled. 

 The elytra are somewhat shining, sparsely and not finely punc- 

 tured at the base, and along the sides beyond the, middle, the 

 punctures becoming gradually finer towards the suture and behind, 

 where the surface is nearly opaque. 



A. mirificus Bland, is a much larger species, with much more 

 coarsely punctured head and prothorax, the latter broadly chan- 

 nelled, and the elytra punctured and rugose before the middle, 

 opaque and scarcely punctured behind. It is found in Colorado. 



ACUOEOPS LEC. 



I regret to say that owing to the want of sufficiently extensive 

 sets of specimens I have unnecessarily multiplied the species of 

 this genus, on slight differences in color, pubescence, or sculpture, 

 which larger collections have shown to be merely individual, and 

 not of specific value. With the increased material now accessi- 

 ble I would arrange the species as follows : 



A. Short stout species, with the head narrowed behind but not constricted, 



antennae rather stout (except in thoracica), with the 4th joint 



distinctly shorter than the 5th ; elytra of $> somewhat dilated 



on the sides. 



a. Prothorax with the lateral angle distinct, sides, therefore, behind 



the middle concave in outline ; 

 Black, prothorax yellow, densely pubescent, elytra densely punctured ; 



base of tibiae yellow, var. incerta Bland. 1. THORACICA (Hald.) 



Color variable, very slightly pubescent, elytra sparsely punctured, punc- 

 tures larger towards the base. a. Thorax with two black spots, or black 

 disk ; elytra yellow with two black vittae, legs yellow or black, bivittata 

 Say. 5. Yellow, head and elytra black, antennae dusky, base testaceous 



