no THE ENTOMOLOGIST. 



justify their union as races, if not aflfording an absolute gra- 

 dation. 



Bembidium lampros, i. — B. velox, Er., is distinguished 

 by the presence of the seventh stria on the elytra, and is rare 

 in this country. 



B. affine. — This name is preoccupied by Say (1825) and 

 Le Conte ; hence I have proposed the name Stepheusii for 

 this species. 



B. tibiale and other species are referred to their type- 

 fonns, after the Monograph of M. Duval, whose opinions are 

 shared by most continental Entomologists. It is impossible, 

 from the isolated evidence afforded by the specimens found 

 in this country, to judge one way or the other; but at least 

 the fact of the stem-form not occurring in this country' is no 

 disproof of their connexion, but rather the reverse. 



Hydroporus rivalis. — H. Sanmarkii is universally con- 

 sidered a good species, and it certainly has strong claims to 

 be so regarded. Varieties of rivalis are often confused with 

 it ; it occurs with that species, but is much rarer, and I have 

 only regarded it as a form of rivalis because 1 can see no 

 difference except in coloration. 



H. victor. — H. ferrugineus, Sleph., is the oldest name, but 

 the existence of H. ferrugineus, L., in the same family and 

 in a closely-allied genus, renders it unadvisable to restore it. 



H. oblongus. — This name is prior by a few years to that 

 of Sturm, and must be restored. 



H. piceus. — Stephens's description clearly applies to this 

 insect, and Dr. Aube had long ago recognized this ; his col- 

 lection, however, does not correspond, and this misled Dr. 

 Schaum into preferring Schiodte's name ; but he had told 

 me that he should revert to Stephens's name in his work on 

 the Hydradephaga, which it is to be hoped may yet be 

 brought out. 



H. tinctus, Clk. — The two types remaining in Dr. Power's 

 collection do not appear to me to differ sufficiently from H. 

 palustris. 



Agabus. — The following sections have been established in 

 this genus by Thomson, and are very useful, viz. : Gauro- 

 dytes, embracing the greater portion of the genus, and having 

 the laciuiae of the raetasternum broad and triangular — in the 

 others these parts are linear ; in Liopterus (agilis) the 



