OF WASHINGTON. 129 



carinate on anterior margin and at the sides, the carinas extending from 

 the dilated portion of the base to near the apex ; base moderately wide, 

 suddenly dilated over the scrobes, feebly or not canaliculate, interocular 

 fossa distinct, large and shallow, from which a fine impressed line leads 

 to the median carina; anterior face of apex convex; surface nearly uni 

 formly finely and densely punctate. Head finely sparsely punctulate. 



Thorax moderately convex, about one-fourth longer than wide, basal 

 half subparallel, apical half moderately arcuately narrower to apex, which 

 is rather strongly constricted; surface moderately deeply, finely, and 

 somewhat sparsely punctate, punctures larger and sparse in front of scu- 

 tellum, finer and dense along the basal margin. Scutellum channeled at 

 middle. 



Elytra one-fifth wider than thorax, gradually narrower toward apex ; 

 striae punctate throughout their length, first stria strongly curved at sides 

 of scutellum, feebly punctate at base, the others gradually more distinctly 

 to the sides. Intervals flat, subequal in width, variable in punctuation, 

 the first and second and sometimes the third and fourth tri-seriately punc 

 tulate, the others irregularly with punctulation in one, two or three rows. 

 Pygidium moderately coarsely and densely punctate, punctures naked or 

 bearing minute yellow hairs, without apical tufts. 



Lower surface finely, rather densely punctate, feebly on prosternum 

 and middle of abdominal segments, sparsely in the middle of the meta- 

 stsrnum, densely in the apical region of the last segment. 



Male. Metasternum broadly and moderately concave, first abdominal 

 and a portion of the second segment broadly feebly concave: tibiae angu- 

 late and strongly fimbriate with long yellow hairs on the inner surface 

 beyond the angle, the posterior pair very strongly angulated ; pygidium 

 subtruncate with rounded sides. 



Female. Metasternum feebly concave, abdominal segments convex; 

 posterior tibiae not strongly angulated, less fimbriate; pygidium feebly 

 bilaterally concave, rounded at apex. 



Length 10-13 mm; width 3.6-4.5 mm. 



Salt Lake City, Utah, April 19 (H. Soltau) ; Salt Lake, June 

 14 (Hubbard and Schwarz); Provo, Utah (H. F. Wickham) ; 

 Reno, Nev., July, 1902 (H. F. Wickham) ; Laramie, Wyo., 

 April 23, 1888 (H. Soltau); Helena, Mont., May i (Hubbard 

 and Schwarz); "Dakota" (H. Ulke, i ex.) ; " Grand Coulee, 

 Wash., Steamboat Rock, 10 July, 1902" (C. V. Piper.) 



Collected in salt marshes in the vicinity of Salt Lake by Messrs. 

 Hubbard and Schwarz. 



Type. No. 7877, U. S. National Museum. Described from 

 abundant material. 



A few obviously much worn individuals with reddish elytra 

 have subopaque thorax and elytra, and one has reddish legs. 



