scoooEB.] CANADIAN FOSSIL INSECTS. 81 



series of similar, circular or oval, approximate punctures, not shown as 

 near together as they should be in the figure, cannot, so far as I can see, 

 be distinguished from the modern species, whose name is given abow. It 

 is the only one of the interglacial beetles completely identical with a 

 living species. Length 5°"°. 



One specimen : No. 16913, Scarborough. 



G. confinis occurs in Massachusetts, Lake Superior, Montana and 

 Oregon. 



Htdeophilidae. 



Cymbiodyta exstiacta sp. nov. 



PL X., Fig. 4. 



One excellently preserved specimen shows a right elytron quite com- 

 plete, indicating a broad insect. The shape shows the presence of a 

 rather large scutellum; the elytron is marked by a distinct, sharp sutural 

 stria, and externally is very faintly and delicately marginate ; it is about 

 twice as long as broad, and the surface is profusely and most delicately 

 punctate . It is referred, somewhat doubtfully, to Cymbiodyta, in the 

 vicinity of G.Jimbriata Melsh.; the punctuation is similar, though a little 

 coarser than in the modern species, and the puncta do not merge into 

 strisB at the extreme tip as in that ; the proportions of the two are much 

 the same, though the fossil is somewhat broader, and it is also a little 

 smaller. Length, nearly 3"". 



One specimen ; No. 16912, Scarborough. 



G.Jimbriata occurs in Canada and in Massachusetts, Pennsylvania, 

 Iowa and Texas. 



Staphtlinidae. 



Gymnusa (?) absens sp. nov. 



PL XL, Fig. 1. 



A single elytron perhaps belongs to Gymnusa, and may be compared, 

 though not very well, to G. variegata Kies. It is very short compared 

 to its breadth and is nearly smooth and distinctly margined, not only 

 next the suture, but to some extent at the posterior border, an unusual 

 feature in any Staphylinid. The surface is castaneo-piceous, and instead 

 of being, as in the modern species, minutely and profusely punctate, is 

 very faintly, shallowly, and sparsely punctate ; there is no sinus in the 



