230 AMERICAN COLEOPTERA 



transverse impression nearly obsolete, the posterior distinct; median line very 

 fine, scarcely distinct, abbreviated at each end; basal impressions small: base 

 truncate, slightly obliquely so each side ; sides with t lie margin narrowly reflex ed, 

 arcuate in front, oblique behind ; bind angles obtuse, but not rounded, not cari- 

 uate. Elytra about one-half wider than the thorax, oblong-ovate, with the two 

 inner striae fine but distinct, the third and fourth nearly obsolete ; first dorsal 

 puncture about two-fifths from base, tbe second about one-fifth from apex. Body 

 beneath fuscous. Legs pale yellowish testaceous. Length .07 .09 inch; 1.75- 

 2.25 mm. 



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



Often confused with pumiltts, but distinguishable by the charac- 

 ters above given. 



It occurs in California, extending eastward through Arizona and 

 New Mexico to Texas. 



41. T. pumilus Dej. — Form elongate, depressed. Color usually ferrugi- 

 neous or rufo-testaceous, the head and often a very ill-defined discal cloud on t lie 

 elytra or more rarely the entire elytra darker; surface shining. Head as wide 

 as the thorax at apex; eyes moderately large and prominent; antenna; nearly 

 one-half as long as the body, fuscous, the basal joints testaceous; palpi testaceous. 

 Protborax suhquadrate, as wide at base as apex, about one-half wider tban long; 

 apex truncate ; anterior transverse impression rather feeble, the posterior deep : 

 median line distinct, extending between the transverse impressions; basal im- 

 pressions small; base truncate, slightly obliquely so each side; sides with the 

 margin very narrowly reflexed, arcuate in front, oblique behind, slightly sinuate 

 in front of the hind angles, which are slightly obtuse, but moderately prominent. 

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

 the number of strife variable, usually with the sutural and the two or three inner 

 ones distinct, often obsoletely punctulate; dorsal punctures distinct, the first 

 about one-third from base, the second about one-third from apex. Body beneath 

 ferrugineous or rufo-piceous. Legs testaceous. Length .07. 09 inch ; 1.75-2.25 mm. 



Only the first joint of the anterior tarsi is dilated in the males. 



Resembles most nearly T. vorax. The form, however, is more 

 elongate, with the sides of the thorax at least feebly sinuate behind 

 and the hind angles consequently more prominent. Some variation 

 is seen in the number and depth of the elytral striae and in the 

 depth of the sin nation of the sides of the thorax. The color also 

 varies as indicated above. 



It occurs in Louisiana and Texas. A few specimens, which seem 

 referable to this species, have also been seen from Yuma, Cal. 



42. T. edax Lee. — Form slender, elongate, depressed. Color piceous or 

 nearly black, shining. Head as wide as the thorax at apex ; eyes large, promi- 

 nent; antennae scarcely one-half the length of the body, piceous, the basal joint 

 paler; palpi fuscous. Protborax suhquadrate, about one-half wider than long, 

 narrower at base than apex ; apex truncate; anterior transverse impression obso- 



