AMERICAN COLEOPTERA. 263 



the second not quite as long as the outer, a fine third stria extending from base 

 under the humeral umbone nearly to the middle. Metasternum lightly silicate 

 at middle. Length 2.3-2.8 mm. 



Hab. — Lake Tahoe, California. 



The two examples in my collection exhibit no differences in 

 an term al structure, these organs being similar to but with rather 

 smaller club than those of the female of dresdensis. It is quite 

 likely that both examples are females and that the males may 

 approach those of dresdensis in the strongly modified outer joints. 

 This species was incorrectly described by me as an Hemiptychus. 



3. D. setulosiim Lee— Oval, moderately elongate, black, feet rufescent, 

 antennae pale; surface shining, pubescence sparse, short, erect. Punctuation of 

 head and pronotum fine and sparse, that of the elytra a little coarser, but still 

 much finer than in dresdensis, and forming more or less regular rows which show 

 a very slight ten'deucy in some examples toward approximation in pairs. Sub- 

 marginal stripe two in number, the inner slightly abbreviated at apex. Eyes 

 much larger in the males, though apparently variable in size, the front in some 

 examples being narrower than the width of the eye, while in others it is a little 

 wider than the ocular width. Antennae of same type as in dresdensis, but with 

 the fourth joint not at all more prominent internally, and the apical edge of 

 the eighth and ninth joints less deeply emarginate in the male and scarcely at 

 all so in the female. Lower surface finely punctate; metasternum very sparsely 

 so posteriorly, more closely in front, the punctures varying in size; ventral seg- 

 ments uniformly finely punctate. Length 1.75-2 mm. 



The following localities are known to me or are authoritatively 

 reported : Canada, New Hampshire, New York, New Jersey, Penn- 

 sylvania, District of Columbia, Virginia, Ohio, Michigan, Illinois, 

 Kansas, Georgia, Louisiana. 



ItMtKIIOIMS LeCoute. 

 The only character of importance distinguishing this genus from 

 Eutylistus is the striation of the elytra. The form is broadly oval, 

 convex, clothed with short, confused, grayish hairs, which are sub- 

 recumbent. The terminal joint of the maxillary palpus is moder- 

 ately elongate-securiform ; of the labial palpus broadly subtriangu- 

 lar, the apex squarely truncate and emarginate, leaving the outer 

 angle acute, the inner rounded. Antennae 9-jointed, similar in 

 structure to Eutylistus, except that the third joint is a little promi- 

 nent interiorly. Epistomal suture impressed. Eyes minutely barely 

 visibly sinuate in front. Elytra striate throughout, the lateral 

 stria? very little deeper than the discal. Metasternal lobe squarely 

 truncate in front, the outer angles a little acute, scarcely at all nar- 



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



