GEOLOGICAL SURVEY OF CANADA. 



CONTRIBUTIONS TO CANADIAN PALAEONTOLOGY 

 GA'NA'DIA'E FOSSIL II^fSEOTS. 



By Samukl H. Scuddee. 



4. Additions to the Coleopterous fauna of the interglacial clays of the 



Toronto district. With an Appendix hy A. D. Hopkins on 



the Scolytid borings from, the same deposits. 



The occurreaoe of insect remains in interglacial beds at Scarborough, 

 Ontario, was first made known by Hinde in 1877* and a couple of species 

 of Carabidae found in them by him were described by me in the same 

 year.f Later additions to the fauna, due to the efibrts of Dr. Hinde, 

 were published by me at different times f, and finally embodied, with 

 additions, in the second paper of the present volume§, in which, including 

 four species found by Dr. Hinde in very similar beds near Cleveland, 

 Ohio, the total number of determined species was stated to be twenty- 

 nine, referable to five different families, — Carabidae, Hydrophilidae, 

 Staphylinidae, Chrysomelidae and Scolytidae. None of the species could 

 be referred to living forms. 



Since then. Professor A. P. Coleman has taken up the investigation of 

 these beds, including new outcrops of the same deposit in the vicinity or 

 within the limits of Toronto||, and has sent me a large mass of material, 

 amounting in all to several hundred specimens, of which about one third 

 were available by being suflBciently complete or characteristic. These are 

 almost exclusively elytra of beetles and form the subject of the present 

 paper ; they consist of fifty-four species belonging to six different families, 

 additional families being Dytiscidae, Gyrinidae and Curculionidae. Only 

 seven of these fifty-four species have been found before in these beds, and 

 all but two of the forty-seven additions are regarded, like those previously 



* Can. .Toum. So., n.s. xv, 399. 



t Bull. U.S. Geol. Surv. Terr., m, 763-764. 



X Can. Ent., xvin, 194-196 (1886) ; Proc. Bost. Soe. Nat. Hist., xiiv, 467-468 (1890) ; 

 Tert. Ins. N.A., passim, pi. 1 (1890). 



§ The Coleoptera hitherto found fossil in Canada, 27-56, pi. 2-3 (1892). 



II See his papers in Amer. Geol., xiii, 85-95 (1894); Joum. Geol. m, 622-645 (1895); 

 and Bull. Geol. Soc. Amer., x, 165-176 (1899); as well as the Reports of the Committee 

 on Canadian Pleistocene Flora and Fauna (A. P. Coleman, Secretary) in the Reports 

 Brit. Assoc. Adv. So., for 1898, 1899 and 1900. 



Sc— 1 



