2 1 TH K IC K A( ; K I N C A X A DA. 



The immlter will he still fuvllicr nuj^'iiiented iti tlic 

 folldwinj,' revision, wliieh will aH'onl ii very eoiiiiileLe 

 view of the siibjeet up to the [)reseiit lime ; and though 

 additional speeies will no doubt be found, yet all the 

 ])rincipal de[M)sit.s have been so carefully exi»lored, that 

 only very rare forms can have escaped observation. For 

 some of the additional species included in the present list 

 I am indebted to Prof. Kennedy (now of Windsor, X.S.), 

 the late Dr. Anderson ((»f (^)uel)ec), the late Sheril'l" 

 Dickson (of KiuL^ston), .Mr. T. Curry (of Muntrcid), I ieui.- 

 Colonel (irant (of Hamilton), Dr. I'ackard, Mr. (}.' F. 

 Matthew, llev. ]\Ir. I'aisley, and other friends, to whom 

 reference will be made in connection with the several 

 species in the catalogue. 



In so far as nomenclature is concerned, 1 have, wherever 

 possible, retained the generic and specific names of the 

 list published in 1872. Where errors had been com- 

 mitted, the names are of course changed, and any new 

 generic names or possible identifications with other species 

 are noted in l)rackets or otherwise. 



In the case of the recent species of marine animals, 

 those ({uoted are largely from my own dredgings in 

 the Lower St. Lawrence, which I liave prosecuted for 

 many years with the view of ascertaining the modern 

 habitats of the rieistocene species ; and reference is made 

 to other collectors where advantage has been taken of 

 their labours. 



I am indebted to Mr. J. F. Whiteaves, F.G.8., paleon- 

 tologist to the Geological Survey of Canada, for his kind- 

 ness in looking over the list and adding .some valuable 

 corrections and suggestions. Mr. Lambe, of tlie (.Jeological 

 Survey, has also kindly examined the sponges, and given 

 me his views as to their relations. 



