442 AMERICAN PACHYBRACHYS (cOLEOPTERA) 



Neither Mr. Bowditch nor myself has been able to obtain a 

 type of ohsoletus for examination, and it is by no means certain 

 that my own interpretation of the species is correct; there is, how- 

 ever, a fair probability of it, and pending definite information it 

 seems better to use this name than to coin a new one. The 

 range of the species is wider than that of tridens as is shown by 

 the following. 



Distribution. — New Hampshire: Farmington, Aug. 3; Webster (Fiske); 

 Franconia (Mrs. A. T. Slosson). Massachusetts: Tyngsboro, Aug. 10, and 

 Tewksbury, July 24 (Blanchard); Marion, Aug. 9 to 12. New York: Vicinity 

 of New York City (Leng); Cokl Spring, July (Sherman); Buffalo (Am. Ent. 

 Soc. CoU.); Bluff Point (Casey). New Jersey: Clementon, Aug. 10, and Angle- 

 sea, May 30 (Wenzel). Pennsylvania: Pocono Lake, July and Aug. (Wenzel). 

 Virginia: (Leng); Pennington Gap (Hubbard & Schwarz). South Carolina: 

 (Wenzel Coll.). Georgia : Tyhee Island, June 24 (Wenzel). Florida: (Liebeck), 

 identity a little doubtful, male lacking. Michigan: Sault Ste. Marie, July 14 

 (Nat. Mus. Coll.); Detroit (Hubbard & Schwarz). Ohio: Cincinnati (Dury). 

 Indiana: (Liebeck CoU.). Wisconsin: Bayfield (Wickham). Iowa: (Wenzel 

 Coll.); Riverton; Elmira, June 25; Nebraska City (Elliott), and Eddyville 

 (Wickham Coll.). Missouri: "Mo," and "C. Mo.," June, on locust (Riley— 

 Nat. Mus. Coll.). Nebraska: Sand Hills, July (Nat. Mus. Coll.); West Point 

 (Nat. Mus. Coll.). Kansas: Salina (Knaus); Rawlins Co. 2,850 feet (F. X. 

 Williams); Douglas Co. (Snow); Imperial (Blaisdell Coll.). Dakota: Bismarck 

 (Wickham). New Mexico: Magdalena Mountains (Snow), identity not quite 

 certain. British Columbia: Selkirk Mountains (J. Chester Bradley) one 9, 

 identity not certain. 



122. Pachybrachys alticola new species 



Very similar to laevis, size a little larger, integuments polished, 

 or more rarely less shining but without any clearly defined aluta- 

 ceous sculpture; yellow with black standard spots variably devel- 

 oped, often broadly suffused and involving the greater portion 

 of the pronotal and elytral disks; eyes slightly more widely dis- 

 tant than in laevis, front with rather feebly impressed ocular 

 lines; front claws of male not appreciably enlarged. Ave. length 

 3 mm. Colorado and New Mexico. 



Head nearly as in laevis, front mostly yellow with broad vertex spot, median 

 spot linear; spots may be larger in female. Eyes separated by a distance 

 which in the cf varies from slightly less to slightly more than twice the length 

 of the basal antennal joint, and in the female is about two and one-half or two 

 and three-fourths times the length of the basal joint. 



Protliorax rather finely and not closely ])unctured, M variable, black, .shari)ly 

 defined, more or less broken in the paler forms in which the color may be best 

 described as black with three discal spots or lines and the side margins yellow. 



