1915] Carnochan — Notes on the Genus Phelister, Mars. 213 



NOTES ON THE GENUS PHELISTER, MARS.^ 



By F. G. Carnochan. 



While working on a revision of the Genus Phelister, of the 

 United States, I noted a few points which it seems well to clear up 

 at this time. Say, in 1825 described Phelister subrotundus, and 

 also described a variety of subrotundus which he called var. A. 

 This variety is characterized by having the fifth dorsal stria 

 abbreviated in front. In the sixty-two specimens of subrotundus, 

 which I have examined, I found seven of this variety, and consider 

 that it merits a name. 



Phelister subrotundus Say var. sayi, var. nov. 



Oval, shining, black. Antennse, legs, and elytra at each side and at tip, reddish 

 brown. Front concave, punctured, frontal stria interrupted, but extending over 

 the eyes. Thorax finely pinictulate, more coarsely at the sides; marginal stria 

 entire, fine; submarginal stria fine, distinct, abbreviated at base. Elytra with five 

 entire striae, the fifth extending just past the middle, and represented at the base by 

 a single deep puncture; the sutural extending usually as far as the fifth. Propygid- 

 ium sparsely punctured, pygidium sparsely and more minutely punctured. Ante- 

 rior tibiae raultidenticulate. 



The type of this variety is in my collection; para types in my 

 collection and in that of Mr. C. A. Frost. I have seen also a 

 second well marked variety which is, however, much more rare. 

 In this variety the fourth dorsal stria is hooked towards the scu- 

 tellum. 



Phelister subrotundus Say var. frosti, var. nov. 



Oval, shining, black. Antennae, legs, and elytra at each side and tip, reddish 

 brown. Front concave, punctured, frontal stria interrupted, but extending over 

 the eyes. Thorax finely punctulate, more coarsely at the sides; marginal stria 

 entire, fine; submarginal stria distinct, fine, abbreviated at base. Elytra with five 

 entire striae, the fifth distinctly hooked at base, the hook extending half way to the 

 scutellum; sutural extending to middle or just in front of the middle. Propygidium 

 sparsely punctured, pygidium sparsely and minutely punctured. Anterior tibiae 

 multidenticulate. 



Described from three specimens; the type is in my collection; 

 paratypes in the collection of Mr. C. A. Frost and the American 

 Museum of Natural History. 



■Contributions from the Entomological Laboratory of the Bussey Institution,' Harvard 

 University, No. 106. 



