188 NEW SPECIES MELYRIDAE, CHRYSOMELIDAE AND TENEBRIONIDAE 



20. Dasytes depressulus Casey. Nevada: (Casey). 



21. Dasytes dementae Fall. Island of San Clemente: (Fall). 



LISTRIMORPHA, New Genus. 



Form of a female Eschatocrepis constrictus Lee., sparsely and uni- 

 formly pubescent. Pronotum without a submarginal line, lateral margins 

 finely serrulate and feebly fimbriate ; disk broadly impressed within the 

 basal angles. Last joint of the maxillary palpi conical. 



Antennae with a feeble three-jointed club ; fifth joint larger than the 

 fourth and angulate anteriorly nearly as in Listrus; joints sixth, seventh 

 and eighth much smaller than the fifth and narrower than those of the 

 club. 



Epipleura rather narrow at base, gradually narrowing to become 

 evanescent behind the middle, superior margin feeble. 



Ungual appendages slightly longer than the length of the claws, 

 attached nearly throughout their length; equal, subacute on the middle 

 and posterior claws. 



Legs slender. Claws slender. Tarsi slender, third and fourth joints 

 together about equal to the fifth, the latter and the first subequal ; second, 

 two-thirds as long as the first. Femora not stout, somewhat compressed. 



Listrimorpha pallipes, new species. Form elongate ovate, wider pos- 

 teriorly. Color black, somewhat dull to shining. Antennae, except the 

 first joint which is dark, and legs testaceous; labrum yellowish, femora 

 more or less piceous toward base. Surface microscopically reticulato- 

 rugulose. Pubescence short, sparse, recumbent and pale in color, not 

 conspicuous; elytral margins loosely fimbriate, hairs longer on the apex. 



Head moderate, as wide as the pronotal apex ; front feebly convex, 

 feebly bi-impressed, impressions somewhat elongate, beginning on a line 

 opposite the antennal base ; vertex obsoletely impressed at the middle ; 

 very finely and sparsely punctate. Eyes rather large and somewhat 

 strongly convex. 



Antennae reaching to about the pronotal base ; first joint smaller than 

 in Listrus, second evenly oval and about equal in diameter to the first ; 

 third and fourth somewhat compressed ; third obconical a little shorter 

 than the second; fourth subtriangular (isosceles) and angulate anteriorly; 

 fifth larger and similarly angulate anteriorly, as long as the second and 

 distinctly larger than either the sixth, seventh or eighth; sixth smallest 

 and about as long as wide, two-thirds as wide as the fifth, seventh a little 

 larger and triangulo-oval ; eighth about as long as the sixth and slightly 

 wider, sides more parallel and more arcuate, about as long as wide; 

 eleventh pointed oval and a half longer than wide. 



