AMERICAN COLEOPTERA. 143 



punctate. Antennae a little longer than the head and thorax with the stem 

 and club (S) of equal length. Thorax a little broader than long, slightly 

 narrowed posteriorly, sides in front feebly arcuate, posteriorly slightly sinuate, 

 hind angles acute, disc sparsely punctate. Elytra sparsely irregularly punc- 

 tate, sutural stria deeply impressed. Beneath smooth, sparsely punctate. 

 Length .14 inch; 3.5 mm. (PI. Ill, Sg. 5). 



This species resembles in form and color pulchella and varies simi- 

 larly but differs in the characters of the male. Here the stem and 

 club are of about equal length. The club is four-jointed, the first 

 joint very short and transverse, the second suddenly larger with the 

 posterior side longer than the anterior, the third is equally broad but 

 with the two sides equal aad shorter than the second, the fourth is a 

 little narrower but longer than the third. In pulchella the second 

 joint of the club is very large and nearly equal to the third and fourth 

 together. In californicus the anterior tibiae of the male have a tooth 

 on the inner side near the tip while in pulchella there is no tooth, 

 merely a slight thickening, the middle tibiae of both species have a 

 small tooth near the tip and on the posterior a slight angulation at 

 apical third. 



San Francisco, also western Nevada, Morrison. 



TERETRIUS Erichs. 



T. placitns n. sp. — Black, shining, elytra red. Thorax nearly square, 

 very narrowly margined, surface moderately densely and equally punctured. 

 Elytra a little more coarsely but less densely punctured than the thorax and 

 without trace of strise, color red. Propygidium and pygidium moderately 

 densely punctured, the latter more finely. Presternum truncate in front. 

 Mesosternum with a fine entire marginal line, surface coarsely and moderately 

 densely punctured. Legs rufous. Anterior tibise with four or five minute teeth, 

 the middle with two larger teeth, posterior finely bispinose, the upper spine 

 which is near the middle very small. Length .08 inch; 2 mm. 



A more robust species than americanus and less coarsely punctured 

 and diflFering especially in the dentation of the tibise. From obliquulus 

 it differs in the absence of the elytral stria and in the tibiae. The 

 color character is of secondary importance and while the three 

 specimens before me are alike it is possible that others will occur 

 entirely black. 



Collected by Mr, H. K. Morrison, in western Nevada. 



T. montaniis n. sp.— Black, shining. Thorax a little wider than long, 

 ■rather finely punctate the punctures denser in front. Elytra not more densely 

 •punctured than the posterior portion of the thorax. Prosternum sparsely punc- 

 tate, the tip distinctly grooved. Mesosternum sparsely and finely punctate 

 without marginal line. Anterior tibite 5-denticulate, middle tibiiB rather 

 strongly bideutate at middle, the posterior bispinose near the tip. Length 

 .10 inch; 2.5 mm. 



