34 CONTRIBUTIONS TO CANADIAN PAL^ONTOLOCY. 



DoNAOlA Fabricius. 

 Donacia stiria. 



Bonaciauiria ScuDD., Tert. Ins. N.A., PI. I, fig. 28 (1890). 



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

 distinct kind of sculpturing. It seems to come as near D. porosicollis 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 striae, the strise minu- 

 tely punctulate, the first and last striae 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, l-i""". 



Donacia porosicollis 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 ScnDD., Tert. Ins. N.A., 486-487, PI. i, figs. 33, 34 (1890). 



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

 nearly allied to our living D. puhicollis Sufir., but is much smaller, or 

 about the size of D. emarginata Kirb. As to the sculpture of the surface 

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

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

 in the obliteration of the markings 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 striae are rather deep, 

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



Length of elytron, 5"™; breadth, l^S"""". 



Donacia puhicollis occurs in Illinois. 



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

 14573, 14577, 14581, 14582—0. J. Hinde. 



