«>"»=»•] CANADIAN FOSSIL INSECTS. 79 



same species as the last, C. impressopunctatus Sch. ; the punctuation is 

 very similar though slightly more delicate in the fossil, but the slender 

 shape is very different and the species is a smaller one. The outer edge 

 is delicately marginate, but there is no sutural stria and the inner base is 

 cut so angularly as to indicate a rather long and slender soutellum ; the 

 mid-elytral basal sulci of the modern species are indicated more distinctly 

 than appears in the figure, requiring a different light to see at the best. 

 Length of fragment, 2-35°°' ; probable length of elytra, 2-6"". 

 One specimen : No. 16908, Reservoir Park, Toronto. 



Coelambus disjectus sp. nov. 

 PI. IX, Fig. 1. 



Still a third species referable to Coelambus finds its nearest living 

 counterpart in C. impressopunctatus Sch. It is a nearly complete but 

 broken elytron, with a fine dense punctuation, a delicately margined outer 

 border, and a distinct, sharp sutural stria. It is piceous and not dark 

 chestnut in colour, and has finer, closer and shallower punctuation than 

 in the living form. Length nearly 4"". 



One specimen : No. 16899, Scarborough. 



Hydroporus inanimatus sp. nov. 

 PL X, fig. 3. 



A single elytron, somewhat crushed and broken, but practically perfect, 

 appears to belong to Hydroporus, but represents a species considerably 

 broader than any I have seen. It seems to come as near to H. solitarius 

 Sharp as anything, but besides being much broader has considerably 

 coarser and more distant punctuation. Exteriorly it is narrowly and 

 delicately marginate, and the punctuation, though distinct and not very 

 delicate, is rather shallow. Length 3°"°- 



One specimen : No. 16903, Scarborough. 



ff. solitarius is only known from Massachusetts. 



Hydroporus inuudatus sp. nov. 

 PL X., Fig. 2. 



The only relic of this species is a single perfect right elytron, showing 

 a slender insect with a marginal stria, which hardly appears in the posi- 

 tion from which the specimen was drawn (requiring light from the 

 opposite side), and uniformly, rather sparsely and delicately punctate. It 

 is however, denser than appears by the figure, and denser than in H. hum- 



