CALIFORNIA ACADEMY OF SCIENCES. 319 



thirds wider than long; sides thence moderately convergent posteriorly and 

 straight, except very near the basal angles where they are feebly sinuate; basal 

 angles slightly prominent, right, not at all rounded; base transversely trun- 

 cate, nearly five-sixths as wide as the disk and just visibly wider than the 

 apex; apical angles broadly rounded; disk broadly convex in the middle, 

 even, broadly impressed near each basal aigle, and having on each side in 

 the middle and very near the edge a large rounded and rather deep impres- 

 sion; punctures fine, even and r xther dense. Elytra at base slightly narrower 

 than the prothorax; sides slightly divergent and straight; outer apical angles 

 •extremely broadly rounded; inner very narrowly so; disk widest at one-fifth 

 the length from the apices where it is one-fourth longer than wide, two 

 and one-third times as long as the prothorax, strongly punctate; punctures 

 denser and distinctly larger near the suture where also the surface is finely, 

 longitudinally and obsoletely sub-costate. Exposed surface of the abdomen 

 much wider than long, as wide as the elytra, very short, very broadly mar- 

 gined at base; surface finely sub-alutaceous, very minutely and not densely 

 punctate. Legs long; femora twice as wide as the tibiaa, sides parallel; pos- 

 terior tarsi long and slender, first four joints decreasing uniformly and very 

 rapidly in length, first as long as the next two together and much longer 

 thautbelast; basal joints of the anterior tarsi feebly dilated. Length 6.0 mm. 



California (Middle Sierras). 



The palpi are very long and slender; the first joint of the 

 maxillary very small; the second long, strongly arcuate and 

 distinctly shorter than the fourth ; third scarcely more than 

 one-half as long as the second, nearly three times as long as 

 wide; fourth very long and slender, acuminate at tip, twice 

 as long as the third; first joint of the labial much shorter 

 than the second; third distinctly longer than the first two 

 together. Mesosternum feebly carinate posteriorly, having 

 in the middle and in the anterior half, two small, abrupt 

 and prominent, spiniform tubercles, arranged longitudi- 

 nally. 



The type is a male; the female is very similar being 

 merely a little larger and relatively wider. The three speci- 

 mens before me show a slight variation from immaturity in 

 the color of the palpi and le^s; in one example the former 

 are rather pale piceo -testaceous, and the tibiae and tarsi in 

 another somewhat p.ile and uniformly clear rufo-fuscous. 



This is evidently the species referred to by Dr. Le Conte, 

 {Proc. Ac. Sci., Phil., 1866, p. 375) from El Dorado Co., as 



