AMERICAN COLEOPTERA. 57 



very finely punctate. Body beneath subopaque, sparsely and finely punc- 

 tate. Anterior tibiae denticulate on the outer margin. Leugth .48 inch; 

 12 mm. 



This species by the form of the thorax and the rounded humeri is 

 related to hirsuta and hhpidula from both of. which it differs in its 

 anterior tibiae being denticulate. A. hirsuta has a more convex and 

 shining thorax, the margins broadly reflexed and the entire surface 

 sparsely clothed with long yellow hair ; hispidula has scarcely any 

 reflexion of the margin but its hind angles are subacute. 



One specimen from St. George, Utah, collected by Dr. Edw. 

 Palmer. 



HELOPS Fab. 

 H. viridiniicans n. sp. — Piceous, surface brilliant metallic green. 

 Species alate. Head sparsely punctate. Antennae somewhat longer than the 

 head and thorax, rather slender, outer joints broader, last joint oboval slightly 

 longer than the preceding. Thorax nearly twice as wide as long, apex slightly 

 narrower than the base and rather deeply emarginate, anterior angles obtuse, 

 sides feebly arcuate, slightly sinuate in front of the hind angles which are 

 rectangular, base feebly bisinuate; surface sparsely punctulate and with an 

 arcuate impression in front of base; beneath, prosternum at middle densely 

 punctured, at sides longitudinally strigose, inflexed portion of pronotum sparsely 

 punctulate. Elytra oval, humeri distinct, surface striate, striae finely punctured, 

 intervals flat, finely punctulate. Body beneath bronzed, moderately punctulate. 

 Length .32 inch; 8 mm. 



This species belongs with the series allied to micans, from all of 

 which it differs by more transverse thorax and the sculpture of the 

 prosternum. 



One specimen from Tampa, Florida, given me by Mr. F. G. Sehaupp. 



H. ciiflicili!^ n. sp. — Moderately elongate black, semiopaque, body apterous. 

 Head densely punctured. Antennae longer than half the body, slender, last 

 joint slightly longer than the preceding. Thorax slightly broader than long, 

 base very little broader than apex, sides moderately arcuate, margin very feeble, 

 base and apex truncate, hind angles subrectangtilar not prominent, disc convex, 

 coarsely and densely punctured. Elytra elongate oval, convex, surface with 

 faint traces of striae and very densely punctured, punctures finer than those of 

 the thorax. Body beneath densely punctured. Length .46 inch; 11.5 mm. 



This species being apterous must be placed in the second group of 

 the genus in accordance with the table published in the Trans. Am. 

 Phil. Soc. 1870, p. o92, differing from all the species in that group 

 by the surface sculpture which resembles that of opacus, some of the 

 forms of which are winged while others are apterous. As compared 

 with this latter species the present is more elongate, thorax more 

 convex and less margined and with the hind angles not flattened and 

 not distinctly rectangular. 



Occurs in the mountainous regions of western Colorado. 



TRANS. AMER. ENT. SCO. VII. (8) JANUARY, 1878. 



