116 GEO. H. HORN, M. D. 



TETRAONYX Latr. 



The species known to inhabit our Territory are separated in the follow- 

 ing manner : ~ 



Elytra entirely fulvous. 



Elytra rather densely punctate, not shining, pubescence fine and entirely re- 

 cumbent. Front black, occiput fulvous. 



Legs entirely black frontalis Chevr. 



Femora yellow tipped with black at base and knee fenioralis Duges. 



Elytra not densely punctate, shining, pubescence rather coarse and erect. Head 



entirely fulvous fulva Lee. 



Elytra fulvous, apical third and large humeral spot black. , 



Head entirely black; femora and coxse yellow, the former black at the knees. 



quadrjniaculata Fab. 

 T. femoralis Duges, La Naturaleza, vol. i, p. 104. — Black beneath, above 

 tulvous. Head fulvous, the front black, sparsely punctate, the punctures finer on 

 the fulvous portion. Antenna black, not longer than the head and thorax. Tho- 

 rax transverse, basal margin reflexed at middle, surface moderately finely not 

 densely punctate, finely pubescent. Elytra wider than the thorax, densely punc- 

 tate, opaque, pubescence short, fine, recumbent and sericeous. Legs black, middle 

 third of femora yellow. Length .36-. 54 inch ; 9-13.5 mm. 



This species has the same general form and sculpture as in frontalis 

 and differs in the color of the femora. The antennae of frontalis are 

 much longer than the head and thorax. 



Five specimens, Arizona. Also in Mexico. 



T. quadrimaculata Fab. — Is further remarkable in having the head 

 and thorax coarsely and closely punctured. Georgia and South Carolina. 

 T. frontalis Chev. — Seems to have escaped mention as an inhabitant 

 of our fauna. I have two specimens from Texas. 



T. fulva Lee. — Entirely fulvous above, with sparser punctuation, 

 sparser and erect pubescence. The legs are yellow, the femora at the 

 knees, the tibiae at tips and tarsi black. Texas and New Mexico. 



