34 CONTRIBUTIONS TO CANADIAN PAL/EONTOLOfiY. 



DoNACiA Fahricius. 

 Doiineia stiria. 



Donacia stiria Scudd., Tert. Ins. N.A., PI. i, tig. 28 (1890). 



This i,s represented by the mere fragment of an elytron, but with a 

 distinct kind of sculpturing. It seems to come as near D. porosicof/is Lac, 

 as any of our modern species I have seen. The tip is the part preserved ; 

 it is of a deep blue-black colour, with an excessively fine, microscopic, 

 transverse rugulation, delicately impressed narrow stria-, the stria:" minu- 

 tely punctulate, the first and last strife moderately distant from the 

 margins, deeply impressed, and less distinctly punctate. It is apparently 

 a rather small species. 



Length of fragment, 3-2""" ; breadth of same, 1-4™". 



Donacia 2)oro)ficollis has been found in Massachusetts and on the shores 

 of Lake Superior. 



Interglacial clays of the neighbourhood of Scarboro', Ontario. One 

 specimen. No. 14558 — G. J. Hinde. 



Donacia pompatica. 



Donacia pompatica ^cvm^., Tert. Ins. N.A., 486-487, PI. i, figs. 3.3, 34 (1890). 



This species, of which there are several exaniples at hand, is most 

 nearly allied to our living D. jmbicoUis Sufi"r., but is much smaller, or 

 about the size of I), emarginata Kirb. As to the sculpture of the surface 

 of the elytra (the only part preserved in any specimen), it would be 

 difficult to say in what respect it differed from the former species, except 

 in the obliteration of the mai^kings at the tip of the elytra, which seems 

 to be characteristic of the fossil. In colour it varies extremely ; in one 

 (No. 14582) it is bluish purple ; in another (No. 14566) it is deep brilliant 

 violet ; still another (No. 14577) has it dark metallic green. In all, the 

 colours are as fresh as if living. The punctured stri;ie are rather deep, 

 and the whole surface of the elytra transversely wrinkled at the punctures. 



Length of elytron, 5"""; breadth, 1-45""". 



Donacia pubicollis occurs in Illinois. 



Interglacial clays of Scarboro', Ontario. Five specimens, Nos. 14566, 

 14573, 14577, 14581, 14582— G. J. Hinde. 



