Casey — A Revision of the American Paederini. 119 



shake the positiveness of Mr. Jiilich that he himself had 

 captured it and was confident of the locality. In a similar 

 case a specimen of gnoma was sent to me many years ago by 

 a correspondent, who stated that he had collected it at Keo- 

 kuk, in Iowa. Having no reason to doubt the accuracy of 

 either of these assertions, we must conclude that the species 

 mentioned, as well as many other California beetles, are an- 

 nually transported across the continent in earth about the 

 roots of plants, in straw, among packed fruit or in other 

 ways, but fail to establish themselves in the east because of 

 the cold winters. Ustulata differs from s^ibseriata in its 

 more slender form and shorter elytra, with the punctures 

 more evenly serial ; as the elytra of the male are shorter than 

 those of the female, upon which sex ustulata is founded, the 

 abbreviation of the elytra in the male must be still more notable 

 when compared with the male oi suhseriata . PuncticepsJ^Qc. 

 belongs to a very different genus from pimcticejjs Sharp, and 

 the change of name of the former to lecontei by Duvivier 

 (Cat., 1883), is not necessary. 



Liobratbium Key. 



This genus and the two preceding form a rather natural 

 group, having the basal angles of the head and the anterior 

 angles of the prothorax very broadly rounded or obliterated. 

 In the present genus the gular sutures differ more than is 

 usually the case from species to species, but, although some- 

 times almost straight and approaching each other gradually 

 posteriorly, they always diverge before attaining the base 

 and are usually most approximate just behind the middle. 

 The species are smaller, more depressed and with longer 

 antennae than in the preceding genus, with the punctures less 

 coarse as a rule, those of the pronotum being generally 

 rather dense, in such manner that the smooth median line 

 seems to be somewhat elevated or more convex than the rest 

 of the surface. Lohrathium is more boreal than any of our 

 other genera having an epipleural fold and is doubtless well 

 represented in the great Canadian northwest, as well as in 



