AMERICAN COLEOPTERA. 107 



cisco by Mr. Ulke and given to LeConte were described by him in 

 1866 as farctus, and this name lias long stood on our lists. It is to 

 Mr. Schwarz, I think, that we owe the discovery of the identity of 

 farctus with the globulum of Sober, previously described from Chili ; 

 and in the National Museum material there is a Chilian example 

 which completely justifies this conclusion. 



NIPTHS Boildieu. 



The structural differences between this and the preceding genus 

 are very few indeed, being confined practically to the difference in 

 the form of the prothorax, which is distinctly constricted behind in 

 Niptus, but not at all so in Trigonogenius. Niptus is represented by 

 ten species in the European fauna, varying so greatly among them- 

 selves in minor points of structure as to cause their separation into 

 several subgenera. In our own fauna only a single species has been 

 known until the recent discovery of the European hololeucus at 

 Montreal. 



1. U. v«'iil ricu I ii* Lee. — Brown, moderately shining, head and prothorax 

 subequal in width and scarcely half as wide as the elytra; the latter globose. 

 Head, antenna', legs and lower surface clothed densely with small pale yellow 

 scales and scattered longer bristle-like hairs of the same color. Antenna half 

 as long as the body, first joint stouter, joints 2-10 subequal, longer than wide; 

 last joint as long as the two preceding and slightly wider, oval, pointed. Front 

 flat between the antenna! fovese. Prothorax nearly as wide as long, constricted 

 behind, disk bituberculate each side in a transverse line, surface gran u lose and 

 clothed not very densely with coarse yellowish hair. Elytra with unimpressed 

 rows of rounded perforate punctures, each interspace with a single series of re- 

 curved setae, the alternate ones with longer erect hairs. The punctures are not 

 setigerous, but there is a recurved bristle similar to those of the interspaces close 

 to the front margin of each one. Front coxae distinctly though rather narrowly 

 separated; middle coxae a little less close; hind coxae very widely distant, the 

 trochanters passing 'he ral margin. Metasternum at middle subequal in 



length to the second ventral segment. Ventral sutures straight, the fourth seg- 

 ment very short; the fifth longest, parabolically rounded at apex. Thighs very 

 strongly clavate ; tibiae and tarsi moderately slender. Length 2.3-3 mm. 



This insect ranges from Texas to Southern California. The type 

 was taken at Santa Fe, New Mexico. It has been found by Wick- 

 ham at Marfa, Texas, by Schwarz at Winslow, Arizona, where also 

 Mr. Wickham records the finding of a colony under a log, and by 

 Coquillet in Los Angeles County, Cal. It occurs also in Mexico. 



TRANS. AM. ENT. SOC. XXXI. MARCH, 1905. 



