1882.) ‘LIGHTNING’ AND ‘PORCUPINE’ EXPEDITIONS. 681 
2 
SUMMARY OF THE FOREGOING List. 
Class SOLENOCONCHIA. 
Families. Genera. No. of species. 
DENTALIIDA .......... DENTALIUM.......... 12 
SIPHODENTALIUM .... 5 
IDiscuimmsigc sont yo: ot al 
CADULUS? wt PERE. Ses 9 
Class GASTROPODA. 
CH LOND) Dine... 22a, OBITON, «cance ioctl 
PATELLIDA............ Parepza .. cae 
HEeLcion: sicekn 2 
IRE CTURA® <> sisiaksmai 
ADDISONIA .. 
PROPILIDIUM ........ 
FISSURELLIDZ ........ FIsSURISEPTA ........ 
PUNCTURELLA........ 
FisSURELLA .......... 
EMARGINULA ........ 
CALYPTRAHIDA ........ CALYpTRHA.......... 
ACBEPTDIUGA otis «on ite 
RB rROoONWWW REO eH oS 
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 distribu- 
tion, which have occurred to me 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 New England at considerable depths, which have been lately 
described or noticed by him in the ‘Transactions of the Con- 
necticut Academy.’ The result of my comparison of these species 
with European species from deep water is most interesting and im- 
portant. 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. 
SuprLemMent To Parts I., IT., 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. 
