150 NEW SPECIES MELYRIDAE, CHRYSOMELIDAE AND TENEBRIONIDAE 



anteriorly ; sixth about as long as wide and obtusely rounded anteriorly ; 

 seventh and eighth subtriangular, about as long as wide, almost circular 

 in transverse section ; ninth and tenth similar in form but slightly longer ; 

 eleventh less than twice as long as wide, slightly obovate, obtusely rounded 

 at apex. All joints beyond the third are quite abundantly set with rather 

 stiff and moderately short hairs. 



Pronotum about a fourth wider than long; apex arcuato-truncate, 

 apical angles broadly rounded into the sides, the latter broadly arcuate in 

 basal half, thence less so and converging moderately to apex, serrules short 

 and rather broad, not very distinct ; base broadly arcuate, rounding into 

 the sides, angles absent ; disk widest behind the middle, quite evenly con- 

 vex, somewhat declivous antero-laterally, punctures moderate in size, 

 well defined, separated by a distance equal to one or two times their 

 diameters, in central third the intervals are flat, glabrous, not noticeably 

 indented, lateral thirds strongly indentato-reticulato-punctate. 



Elytra elongate, punctures rather smaller than those of the pronotum, 

 almost arranged in irregular transverse lines of twos or fours, separated 

 by a distance equal to one-half to three times their diameters, intervals 

 between the punctate lines more or less feebly and transversely impressed, 

 surface very finely rugulose. 



Abdomen very finely and almost thickly punctate; sixth ventral seg- 

 ment usually visible ; apex with rather long and slightly blackish 

 pubescence ; fifth ventral unmodified on the disk in the male. 



Legs moderate in length and stoutness ; tarsi long and slender. 



Male. Narrow and parallel. Second and third antennal joints 

 stouter than in the female ; pronotal hourglass-shaped macula with narrow 

 median lines of pale hairs at apex and base ; fifth ventral segment broad 

 at apex and truncate. 



Female. Elongate ovate, sides rather feebly arcuate, second and 

 third antennal joints less stout; pronotal central macula usually without 

 median pale lines ; fifth ventral broadly rounded at apex. 



Measurements. Length (Types), 3-3.6 mm.; width, 1-1.4 mm. 



Holotype, male, and paratypes in my own collection ; allotype, female, 

 and paratypes in the collection of the California Academy of Sciences. 



Type locality. Vine Hill, near Martinez, Contra Costa County, 

 California. Collected by myself on November 28th, 1908. About twenty 

 specimens studied. 



Distribution. California. (Besides at the type locality, specimens 

 have been seen from Alhambra Valley, Contra Costa County ; these were 

 collected on December 25th, 1913; Niles Canyon, Alameda County, 

 April 19th, 1914.) 



