72 CONTRIBUTIONS TO CASTABIAN PALiEONTOLOGY. 



puncture, not given in the figure, distinctly before the middle of the 

 elytron ; the second cannot be seen on either specimen from the irregular- 

 ity of the surface. Both elytra are piceous and appear of rather tenuous 

 structure. The species seems to fall near B. coxendix Say, but is a little 

 larger, and has a little less deeply impressed striae, though equally heavily 

 punctate, and the first dorsal puncture is further forward. The better 

 fragment measures 2-8 °™- in length and the whole elytron was probably 

 3-6 "" long ; its breadth 1-2 ■°°'. 



Two specimens : No. 16795 from Scarborough ; and No. 16807 from 

 Reservoir Park, Toronto. 



Hayward states that B. coxendix occurs in Manitoba, Lake Superior, 

 Illinois, Nebraska, Kansas, Colorado, New Mexico and Texas. 



Bembidium praeteritum sp. nov. 

 PI. VL, Fig. 6. 



A single elytron, broken at the apex, represents a small and slender 

 species with rounded humerus, moderately impressed and rather heavily 

 punctate striae, tolerably flat intervals and with two punctures in the third 

 stria. It appears to be rather near B. longulum LeC, but is considerably 

 smaller, with less deeply impressed strii*, considerably coarser punctures, 

 flatter intervals, and the dorsal punctures differently placed, being a trifle 

 less than one-third and two-thirds from base. I find no existing species 

 that appears to come nearer to it. The length of the fragment is 2'1 '°°', 

 and the probable length of the elytron 3 "^ ; its breadth 0-8 '°". 



One specimen: No. 16828, Scarborough. 



B. longulum is said by Hayward to occur in the Lake Superior region, 

 the mountainous parts of Wyoming, Colorado and Utah, and in Califor- 

 nia and Washington. 



Bembidium expletum sp. nov. 



PI. VII, Pig. 1. 



The larger portion of a much broken elytron indicates a species of about 

 the same size as, or slightly larger than, B. planatum LeC, to which it 

 appears to be most nearly allied. It has very delicately impressed, deli- 

 cately and feebly punctate striae and flat intervals, with a dorsal puncture 

 on the third striae (not shown in the figure) just before the end of the 

 fragment, further back than in B. planatum and not so pronounced ; the 

 punctuation of the striae is a trifle more distinct, and the striae are simi- 

 larly impressed throughout, and not more pronounced in the proxima 



