ROLAND HAYWARD. 223 



the base; median line fine, abbreviated at each end; basal impressions small, 

 deep; base truncate, slightly obliquely so each side; sides with the margin very 

 narrowly reflexed, arcuate in front, oblique behind ; hind angles obtuse, hut not 

 rounded, not carinate. Elytra wider than the thorax, oblong-ovate, with a 

 sutural and two or three dorsal stria? very fine, inipunctate, the former deeper 

 towards the apex, with the recurved portion strongly hooked at tip, the third 

 and fourth usually very feebly impressed or nearly obsolete; first dorsal punc- 

 ture near the middle, the second slightly behind the tip of the recurved portion 

 of the sutural stria; intervals flat. Body beneath dark piceous or black. Legs 

 with the femora varying from more or less piceous to nearly black, the tibiae and 

 tarsi paler. Length .08-. 10 inch ; 2-2.5 mm. 



It is very closely allied to the preceding, and the two species ex- 

 hibit nearly parallel series of color variations. Examples of corax 

 with the elytra longitudinally vittate have the vitta less clearly de- 

 fined than in typical specimens of vittiger. As in the latter species 

 examples occur with a subhumeral and subapical spot or even only 

 a subhumeral spot pale, so that the black and vittate forms are con- 

 nected by intergrades. The latter seems confined to the more 

 eastern portions of its range. Nearly similar varitions in color are 

 also to be seen in occultator. From vittiger it may be recognized by 

 the thorax slightly obliquely truncate each side at base, with the 

 sides oblique, not sinuate behind and the hind angles obtuse, as 

 well as by the color of the legs. The latter character, together 

 with its less elongate form, with the thorax less narrowed behind, 

 seems sufficient to separate it from misellm. 



It occurs in Upper and Lower California, Arizona, New Mexico, 

 Utah, Montana, Colorado, Nebraska and Texas. A specimen from 

 Colorado in Mr. Ulke's collection was taken at an altitude of 

 10,000 ft. 



33. T. miselllis Laf. — Form slender, elongate, slightly depressed. Color 

 nearly hlack, shining. Head as wide as the thorax at apex ; frontal grooves dis- 

 tinct, extending posteriorly to the middle of the eyes, which are large and 

 prominent; antenna? less than one-half as long as the body, piceous, the basal 

 joints testaceous; palpi testaceous. Prothorax subquadrate. nearly twice as wide 

 as long, distinctly narrower at base than apex; apex truncate; anterior trans- 

 verse impression obsolete, the posterior feebly marked ; median line scarcely evi- 

 dent; basal impressions small; base truncate, slightly obliquely so eacJi side; 

 sides with the margin narrowly reflexed, arcuate, sinuate in front of the hind 

 angles, which are subrectangular, not carinate. Elytra scarcely wider than the 

 thorax, subparallel ; sutural and second stria very fine, the third nearly obso- 

 lete; first dorsal puncture scarcely in front of the middle, the second slightly 

 behind the tip of the recurved portion of the sutural stria. Legs yellowish tes- 

 taceous. Length .09 inch ; 2.25 mm. 



Most nearly allied to corax, which it closely resembles, but from 



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



