DESCRIPTION OF NEW SPECIES 149 



Measurements. Length (Types), 3.2-3 .4 mm.; width, 1.1-1.3 mm. 



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

 in that of Mr. J. O. Martin, who collected them pn June 5th, 1919. 



Type locality. Bear Lake, San Bernardino County, California. 

 Eight specimens studied four of each sex. 



Vestitus is quite distinct from elegantulus and bifasciatus, where the 

 males are distinctly elongate and parallel. In vestitus the differences in 

 form between the sexes are less noticeable; the last three joints of the 

 antennae are circular in section and stouter in the male. 



Listrus bifasciatus, new species. Form elongate, parallel to ovate, 

 moderately convex. Color black, second to the sixth antennal joint 

 inclusive piceous, second sometimes paler ; tibiae and tarsi more or less 

 piceous; surface scarcely feebly purpureo-aeneous in lustre and slightly 

 shining. 



Pubescence moderately short, not very conspicuous, brownish-black 

 hairs about as abundant as the paler plumbeo-cinereous hairs and arranged 

 in rather large maculae which appear as follows : A large parascutellar 

 macula, an humeral elongate one extending arcuately backward and con- 

 tinuous with the post-basal at middle of the elytron, this macula varies in 

 size ; median fascia moderately wide and distinctly zig-zag, scarcely attain- 

 ing the lateral margin, but extending forward along the suture, these 

 extensions frequently separated and appearing as post-basal sutural 

 maculae ; subapical fascia similar in form, or divided at middle of each 

 elytron, the sutural portions tending to form a subrhomboidal macula on 

 the suture ; apical maculae rather large. The elytral pattern is suggestive 

 of that seen in pardalis Casey ; the pale hairs form relatively narrow areas 

 between the dark fasciae and maculae. Pronotal central macula quite 

 distinctly constricted at middle and apparently somewhat different in the 

 sexes ; lateral semilunar vittae more or less distinct. Central area of the 

 head usually darkish. 



Head slightly broader than the pronotal apex, moderate in size, 

 about as long as wide ; front almost feebly convex, although feebly and 

 broadly impressed anteriorly, punctures rather coarse and close, slightly 

 impressed, intervals somewhat indented at the periphery, a small glabrous 

 and slightly convex area at the epistoma. Eyes rather large. Antennae 

 long, almost quite similar in the sexes, very feebly compressed, rather 

 stout, very gradually incrassate, outer joints distinctly heavier; first very 

 stout ; second oval and a little longer than wide ; third obconically sub- 

 triangular, almost twice as long as wide ; fourth wider than the fifth or 

 sixth, slightly elongate, triangular and angulate anteriorly, and with the 

 fifth noticeably compressed ; fifth similar to the fourth but obtuse 



