NORTH "i mi vim. 355 



B. i stus. M.ls., Proc. A'-ail.. 



Found in tlic Northern and Middle States. 



B pulverulentus, Mann., Beitrag, 576 r Motsch. Bull., M ■ . L845, 



The species of Mbtschulskj is very badly described but it is doubtless the same as 

 that described by Mannerheim. . 



Both this and the preceding species are deep shining black and have but few black 

 hairs very sparsely scattered over the elytra, rarely sen except when the specimen is 

 fresh. This species has also, when recent, a coating of whitish efflorescence previously 

 iim Qtioni d amen- the specii s el' Trimytis. Mot stua and />u/r, rub ntua are closely related 

 and differ only in the base of the thorax of the former being more strongly sinuous and 

 the hind angles rather more prominent than the middle lobe of the base. Both are 

 nearly equal in si/,.. 



Length .20-.23 inch. 



Occurs abundantly everywhere in California. 



1'.. interruptus, in. A.cad. 8, 264 ; luridus, Muls., Opusc. Entom. Cah. 9, p. I 



This species is separated from the synonymy in which it has been placed on account 

 of the permanence of certain characters in a considerable series of specimens. The < lytra 

 are here hlack. very rarely with any metallic tinge. The thorax, is denselj and coarsely 

 punctured, less shining than in metallicus. The species is larger, broader and more convex. 



Length .22 inch. 



Abundant in the Northern States and Canada. 



B. metallicus, Fab. Blaps), El. 1. 143; Beauv. tns. p. 137, tab. 30b. fig. tfels., Proc. Acad 



Smaller than interruphis and more distinctly metallic. The thorax is finely and 

 sparsely punctured and shining. The punctures of the elytra are very large and cause 

 them to appear very rugose. En both species there is a depression of the base of the 

 thorax opposite the fourth interspace, more evident in metallicus. 

 Length .18-.20 inch. 

 Abundant with the preceding. 



NOTIBIUS, Lee. 

 Notibius, Lee., Ann. Lye. V.. 145. 



Differs from Blapstinus in having the upper portion of the eyes smaller and rounder, 

 the intercoxal process of the abdomen quadrangular and truncate, and the scutellum very 

 transverse, scarcely visible between the elytra. Presternum more or less prolonged 

 behind the coxa, mesosternum correspondingly concave; metasternum short, body 

 apterous. 



