238 THE CANADIAN ENTOMOLOGIST. 



ventral truncate and broadly feebly emarginate, the outer angles of the 

 emargination not dentiform. The side margins of the last ventral 

 segment are evidently though feebly serrulate, and this, together with the 

 absence of pronotal fove^e or callosities, places this species in Horn's 

 Group I. It is most nearly allied lo piuta, Wick., which should evidently 

 be referred to the same group instead of Group IV, as stated by its 

 author, but is still smaller — in fact, the smallest species of the genus known 

 to me — and lacks the elytral fove^, which are well defined in piuta. In 

 this latter the coloration of the upper surface is more brilliant, the sides of 

 the prothorax less narrowed posteriorly, and scarcely at all angulate, the 

 third antennal joint longer and relatively narrower. 



Chrysobothris piibescens, n. sp. — -Moderately robust, dark bronze, 

 shining, distinctly but sparsely pubescent throughout. Head coppery ( ^ ), 

 front green ( ^ )• Antennse narrowed externally, bronzed in 9 > greenish 

 in (J , third joint much shorter than the next two together. Front closely 

 punctate, without or with but a small feeble callosity each side of the 

 median line ; clypeus with broad triangular emargination, lateral lobes 

 rounded. Prothorax one-half wider than long, sides rounded in front and 

 behind, parallel and slightly sinuate at middle ; disk nearly uniformly 

 convex except for a shallow impression on the median line anteriorly, 

 callosities wanting, punctuation moderately close. Elytra one-third wider 

 than the prothorax, not quite twice as long as wide, basal fovese broad, 

 not very deep ; discal fove?e three in number, one before the middle, the 

 other two at apical third, the outer one a little in advance of the inner, 

 and sometimes connected with it, all the foveas more or less cupreous or 

 rarely greenish ; costae somewhat variable, the inner one usually distinct 

 from basal third to apex; the second feebler, scarcely elevated, interrupted 

 by the foveae ; punctures rather fine and well separated, at least at the 

 middle of the disk ; apices rounded and feebly serrulate. Prosternum 

 lobed in front, closely and rather coarsely punctate, pubescent, scarcely 

 differing in the sexes ; ventral segments brightly bronzed, rather sparsely 

 punctured at middle, more closely so laterally, and with more or less 

 evident callosities. Front thighs with moderate acute tooth, which is 

 denticulate externally. Length, 7^-9 mm. 



California. Not rare in the Southern Sierras at altitudes of 3,000 to 

 6,000 ft., occurring most commonly on scrub oak. 



In the male the tibial characters are the same as in the allied deleta, 

 and the last ventral is very similarly subsemicircularly emarginate. In the 



