41(3 AMERICAN PACHYBRACHYS (cOLEOPTERA) 



bi-dwnish, following joints yellow, the outer three or four infuscate. Eyes a 

 little more distant than in atomnrius, being separated in the male by a httle 

 more than twice the length of the basal antennal joint. Punctuation of upper 

 surface very dense throughout, and even more broadly confused than in 

 atomariiis, with few indications of strial arrangement, chiefly along the sides, 

 antl these scarcely at all impressed. 



The slightly more distant eyes, which are a trifle more promi- 

 nent, entirely black basal joint of the antennae, and rather dense 

 more completely confused elytral punctuation will, I think, enable 

 the student to separate this from atomarius. 



Distribution.— Kansas: Medora, June 10, type c^ (Knaus); Clearwater. 

 Nebraska: Sand Hills (Nat. Mus. Coll.). Oklahoma: So. McAlester, June 11 

 (Wickham). Texas: Columbus, May 16 and July 8 (Hubbard & Schwarz); 

 San Diego, May 24 to 26 (Hubbard & Schwarz) ; Dallas (Wickham) ; Macdona, 

 July 29; Flatonia, July 30 and Seabrook, Aug. 9 (Wenzel). Mississippi: 

 Vicksburg, May 27 (Soltau— Nat. Mus. Coll.). 



97. Pachybrachys obfuscatus new species 



Again very nearly identical with atomarius, distinguishable only as follows. 

 The front, which in the male of atomarius is yellow with a linear or narrowly 

 triangular median dark spot, is here predominantly fuscous and more closely 

 punctate; the eyes are a little less distant than in atomarius being separated 

 by about one and three-fourths times the length of the basal antennal joint, 

 or slightly more; the front claws of the male are a little larger than in atomarius, 

 and the pygidium is maculate with dull yellow — entirely l)lack in atouiarius 

 so far as I have observed. 



Distribution. — North Carolma: Black ?klountains, June (^'an Dyke), type 

 cf . Georgia : Clayton, 2,000 to 3,700 ft. (Leng) . New York : Several examples 

 without definite locality are associated provisionally. They agree remarkably 

 well except that in one example the eyes are as widely separated as in atomarius. 



It may be very difficult to separate specimens of this species 

 from dark colored examples of roboris, but the latter nearly always 

 has brown or rust colored markings — especially in the females — 

 and if a series of this latter species is present there is likely to be 

 no difficulty in separating them; the two species are, however, very 

 closely allied. 



98. Pachybrachys stygicus new species 



Robust, black, with or without a few very small yellow flecks 

 on the elytra, rarely with numerous small \ellow spots on both 

 thorax and elytra; lustre dull, punctuation rather dense; eyes 

 distant, front without ocular lines; froUt claws of male not appre- 

 ciably enlarged. Ave. length 2.85 nun. Georgia; Florida; 

 Alabama. 



