156 NEW SPECIES MELYRIDAE, CHRYSOMELIDAE AND TENEBRIONIDAE 



Listrus parvicollis, new species. Form elongate subovate, moderately 

 convex. Color black with a faint purpureo-aeneous lustre ; labrum more 

 or less rufous, head and pronotum opaque, antennae piceo-rufous, joints 

 two, three and four more rufous than the terminal ones, elytra more or 

 less shining; femora rufo-piceous, tibiae and tarsi rufous. 



Pubescence short and sparse, dark cinereous in color with brownish 

 hairs arranged in a pattern as follows: A broad median fascia that 

 extends along the suture to base and dilating about the scutellum, the 

 humeral and lateral area with irregular grayish markings ; a wide sub- 

 apical fascia that involves most of the apex, where there are scattered 

 grayish hairs. The median and subapical fasciae are separated by a very 

 narrow transverse zig-zag fascia of pale hairs. Pronotal central macula 

 very faintly indicated, but apparently constricted at middle and with a 

 narrow median grayish line; lateral semilunar vittae more or less 

 obsolescent. 



Head notably small, about as wide as long, muzzle small and rela- 

 tively narrow ; front moderately impressed, impressions broad and sepa- 

 rated by a feeble but distinct, glabrous raised area behind the base of the 

 epistoma; surface densely punctato-rugose, eyes rather prominent. 

 Antennae extending to the base of the pronotum, rather slender and some- 

 what incrassate ; second joint oval and rather stout ; third cylindric and 

 about twice as long as wide ; fourth, fifth and sixth distinctly angulate on 

 their anterior borders ; fifth distinctly wider than the fourth but subequal 

 in width with the sixth; seventh, eighth, ninth and tenth not stout, but 

 evidently slightly transverse ; eleventh oval and obtusely pointed and 

 about a half longer than wide. 



Pronotum notably small, about a third wider than long ; sides evenly 

 and rather strongly rounded in basal half, thence straight and convergent 

 to apex, and coinciding with the inner border of the eyes, serrules small 

 and acute, fimbriae not close and moderately short ; apical angles obtuse ; 

 apex rather arcuate and distinctly narrower than the head ; base broadly 

 rounded, continuously so with the sides ; disk very densely indentato- 

 punctate, indentations same size as the punctures, the deeper punctures 

 separated by one or two indentations ; surface rather strongly and evenly 

 convex from side to side, especially anteriorly. 



Elytra distinctly wider than the pronotum, slightly more than twice 

 as long as wide; sides broadly and not strongly arcuate; apex rather 

 broadly rounded ; disk not very coarsely punctate, punctures separated by 

 a distance about equal to twice their own diameter, finer toward apex. 



Abdomen very finely punctate and more or less finely reticulate. 



Male unknown. 



