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Show 1882.] ' LIGHTNING' AND 'PORCUPINE' EXPEDITIONS. 681 SUMMARY OF THE FOREGOING LIST. Class SOLENOCONCHIA. Families. Genera. No. of species. DENTALIIDiE DENTALIUM 12 SIPHODENTALIUM .... 5 DISCHIDES 1 CADULUS 9 Class GASTROPODA. CHITONIDiE CHITON 10 PATELLIDiE PATELLA 1 HELCION 1 TECTURA 6 ADDISONIA 1 PROPILIDIUM 4 FISSURELLID^E FISSURISEPTA 3 PUNCTURELLA 3 FISSURELLA 3 EMARGINULA 8 CALYPTR^EIDiE CALYPTR^A 1 CBEPIDULA 1 Total 69 In order to make this work as complete as possible up to the present time, I will add a few notes, chiefly with regard to distribution, which have occurred to m e since the publication of the last Supplement. These addenda and corrigenda seem to be endless ; but in the continual progress of science they are unavoidable. Through the obliging courtesy of Professor Verrill I have now been enabled to examine examples of many of the species procured during his long and careful exploration of the sea-bed adjoining the coasts of N e w England at considerable depths, which have been lately described or noticed by him in the ' Transactions of the Connecticut Academy.' The result of m y comparison of these species with European species from deep water is most interesting and important. Out of 35 species which Professor Verrill has thus kindly sent me, I consider 29 or 30 identical with European species. It shows the far more extensive range of marine Mollusca at certain depths than of land and freshwater Mollusca over any territorial area of equal space. SUPPLEMENT TO PARTS I., II., III., IV. Part I., P.Z.S. 1878 :- Page 399. Terebratula caput-serpentis. Fossil. Miocene : Marne Vaticano (Ponzi). „ 402. Terebratula tuberata. Bay of Biscay (' Travailleur ' Exp., 1881); 1093 fms. |
