BEMBIDIIN^; 143 



sissippi Valley, but not to the dry and climatically very different 

 western country, where it is replaced by impotens, having entire 

 elytral striae. Flavopictum, from the northern California coast, re- 

 sembles impotens and has the head relatively almost as large, but 

 can easily be observed to differ in its narrower body and less thick- 

 ened antennas. These three species were confused by Mr. Fall (Tr. 

 Am. Ent. Soc., 1910, p. 97) under the name pictum or flavopictum. 

 That author also confounded the local mountain species, with entire 

 elytral striae, named timidum by LeConte, with the more widely 

 diffused northern species decipiens and versicolor, having slightly 

 abbreviated striae. Mr. Hayward was decidedly in error in stating 

 both decipiens andfallax of Dejean, to be synonyms of affine; fallax 

 is truly a synonym, but decipiens is quite different and was far re- 

 moved from fallax in the work of Dejean. The subobsolete sinua- 

 tion of the sides of the prothorax in versicolor, was specially men- 

 tioned by LeConte; this separates it very clearly from the larger 

 decipiens; it is a widely distributed and abundant northern species. 



The species described by Hayward under the name miiscicola 

 previously identified erroneously as the European lam-pros should 

 not have been associated with affine by its author; it differs greatly 

 in general habitus due to its more oval, uniformly colored elytra, 

 large prothorax, widely spaced elytral punctures, short scutellar 

 stria, alutaceous lustre and in other ways; in fact, it is one of the 

 more isolated species of the entire genus. 



The scudderi section of Notaphus is also isolated by reason of gen- 

 eral habitus, and especially, because of the three dorsal foveae of 

 the elytra, but cannot for the latter reason alone, be separated as 

 a distinct group of Bembidion, as shown previously under the bifas- 

 ciatum group. My single example of con simile lacks all trace of 

 the middle fovea on both elytra, though the others are normal and 

 in the usual very anterior and posterior positions. Hageni Hayw. 

 (sexpunctatum \\ Lee.) from the lower Colorado River Valley, is 

 unknown to me and is apparently still represented solely by the 

 single type specimen. 



