BcuBDEfu] CANADIAN FOSSIL INSECTS. 73 



half of the elytra, as appears to be the case in B. planatum, at least on 

 the first three striae. The length of the fragment is S-l"™", indicating an 

 elytron about 5"™ long ; breadth 1 -T"". 



One specimen: No. 16812, Reservoir Park, Toronto. 



B. planatum occurs, according to Hay ward, in the Lake Superior region, 

 the Rooky Mountains as far south as Colorado, and in Nevada, Oregon, 

 Washington and British Columbia. 



Bembidium damnosuin sp. nov. 

 PI. VII, Fig. 5. 



A nearly perfect but rather poorly preserved elytron represents a small 

 species with rounded humeri, which appears to approach rather closely 

 B. complanulum Mann., having similar flatness of intervals and much 

 the same striation, though with feeblest signs of any punctuation ; only 

 one dorsal puncture can be made out on the third stria, not shown in 

 the figure, and that is at the middle of the elytron. The length of the 

 elytron as preserved is 2 •5"" ; it must have measured about 2 •7"°', and 

 the breadth is 0-9"°". 



One specimen i No. 16827, Scarborough. 



B. complanulum is said by Hay ward to occur " on the Pacific coast 

 from Alaska to California, extending eastward to the Rocky Mountains." 



Patrobus decessus sp. nov. 

 PI. VII, Fig. 4. 



A number of specimens of the elytra of this species have been found, 

 none of them perfect, though some nearly so ; one with the best surface, 

 though more imperfect than some of the others, was chosen for drawing. 

 The elytra are piceous, about three times as long as broad, with well 

 rounded humeri, flat intervals, delicate but sharply defined punctate striae, 

 the punctures distinct but delicate, and a sutural stria more than as long 

 as the breadth of the elytra. They appear to represent a species of 

 Patrobus allied to P. rugicollis Rand., but a little smaller and with more 

 distinct punctures, though these are somewhat exaggerated in the drawing; 

 the intervals are also flatter, and the surface is more glistening. Length 

 of most perfect specimen 5-2.5°'°; breadth, l^S™. 



Ten specimens : Nos. 16782, 16783, 16787, 16788, 16791, Reservoir 

 Park, Toronto; Nos. 16784-16786, 16789, 16790, Scarborough. 



P. rugicollis is found in Canada, New England, New York and Penn- 

 sylvania. 



