ROLAND HAYWARD. 231 



lete, the posterior deep; median line distinct, abbreviated before and behind; 

 basal impressions distinct; base truncate, obliquely so each side; sides with the 

 margin narrowly reflexed, arcuate in front, sinuate behind ; hind angles slightly 

 obtuse, not carinate. Elytra oblong-ovate, slightly wider than the thorax, some- 

 what variably striate, the two inner strife deeper, the outer usually obsolete or 

 nearly so, more rarely with the third and even the fourth well marked ; striae 

 impunctate; dorsal punctures rather large, the first about one-third from base, 

 the second about one-fifth from apex. Body beneath piceous. Legs testaceous. 

 Length .07-.09 inch ; 1.75-2.25 mm. 



In the males only the basal joint of the anterior tarsi is dilated. 



One of the best-marked species of the group. 



It occurs in California, Oregon, Nevada, Idaho and Utah. 



. 43. T. coliiiiibieusis n. sp. — Form elongate, depressed. Head piceous, 

 thorax yellow, elytra reddish brown, the latter subopaque, with more or less 

 silken lustre. Head as wide as the thorax at apex ; eyes large and prominent; 

 antennae about one-half as long as the body, fuscous, the basal joints yellowish 

 testaceous; palpi yellowish testaceous. Prothorax subquadrate, narrower at base 

 than apex, about one-half wider than long; apex truncate; transverse impres- 

 sions distinct, the median line fine, extending between them; basal impressions 

 very small ; base truncate, obliquely so each side; sides arcuate in front, oblique 

 behind, the margin very narrowly reflexed ; hind angles obtuse, but not rounded, 

 not carinate. Elytra oblong-ovate, subparallel, slightly wider than the thorax ; 

 striae impunctate, the sutural distinct, deeper posteriorly, the second and third 

 feeble or obsolete; dorsal punctures distinct, the first about one- third from base, 

 the second about one-fifth from apex. Body beneath rufo-piceous, the thorax 

 yellowish. Legs yellowish testaceous. Length .09-. 10 inch ; 2.25-2.5 mm. 



The first joint of the anterior tarsi is dilated in the male. 



The name above used is a manuscript one employed in both the 

 LeConte and Zimmermann collections. It seems best to retain it, 

 especially as many specimens have been distributed under that name 

 by Dr. LeConte, and it also occasionally occurs in our literature. 



From corruseus, to which it seems most nearly allied, it may be 

 distinguished by the thorax narrower at base than apex, and by the 

 more oblong elytra, which are narrower as compared with the 

 thorax. In the male the basal joint of the anterior tarsi is normally 

 dilated, the inner angle not being prolonged in a spiniform process 

 as in the latter species. 



It is known to me from South Carolina and Florida. 



44. T. corruseus Lee. -Form subdepressed. Color varying from nearly 

 black to piceous or more rarely dark rufo-testaceous, the elytra sometimes feebly 

 iridescent. Head as wide as the thorax at apex ; eyes large, prominent; antennae 

 scarcely one-half as long as the body, fuscous, the basal joint testaceous; palpi 

 testaceous. Prothorax subquadrate. about one-half wider than long, as wide at 

 base as apex ; apex truncate ; anterior transverse impression feeble or nearly ob- 

 solete ; median line fine, abbreviated at each end ; posterior transverse impression 



TRANS. AM. ENT. SOC. XXVI. MARCH, 1900. 



