208 JOURNAL OF CONCHOLOGY, VOL. I4, NO, 7, JULY, I914. 



T. megotara var. subericola Macg. (non Jeff.). — This was first 

 discovered and named by Professor jMacgillivray, who contributed a 

 paper " On a Species of Teredo found in Cork Floats on the Coast of 

 Aberdeenshire," to the Edinburgh New Philosophical Journal, 1832, 

 vol. xxxviii., pp. 138-141. 



Siphodentalium lofotense M. Sars. — S.W. Ireland (R.I. A, 

 cruise) ! off Ailsa Craig, 2of., one specimen only. 



S. affine M. Sars. — Off the Shetlands, iiif.-i25f. (Simpson) ! 

 S.W. Ireland (R.I.A. cruise) ! Sars' figures well represent the differ- 

 ences between this species and S. lofotense, though the latter should 

 be a little more cylindrical at the base. Dr. Chaster writes that 6". affine 

 should be united with S. lofotense, because it is "quite impossible to 

 separate the specimens when dealing with them in hundreds ; the 

 name affine must, therefore, be relegated to varietal rank."^ And he 

 quotes in corroboration of this extraordinary dictum the fact of my 

 having written "that one form merges into the other." I must repudi- 

 ate this interpretation of my words; though in outline "the extreme 

 forms of the two species meet," that does not dispose of their specific 

 characters, which are not open to doubt. 



S. quinquangulare Forb. has been dredged between the Shetlands 

 and Faroes in 73-197^ (Simpson) ! and in the Atlantic off Ireland 

 in ioo-345f. (R.I.A. cruise) ! 



Cadulus subfusiformis M. Sars. — Atlantic off S.W. Ireland, 

 345 f. (R.I.A. cruise) ! 



C jeffreysi Monts.— Atlantic off S.W. Ireland 345^ (R.I.A. 

 cruise) ! also in the Faroe Channel (' Triton '), with var. tuniidula 

 G. O. Sars ! 



C. propifiquns G. O. Sars has been dredged midway between the 

 Shetlands and Norway in i97f. (Simpson) ! and in the Atlantic off 

 S.W. Ireland in 345^ (R.I.A. cruise) ! 



C. tumidosus var. minor Jeff, has been dredged in N. Shetland in 

 345f., and also on a shallow bank in the Atlantic off Ireland in 85f 

 (' Porcupine'). 



Dentalium L. — With reference to "the separation of the Dentalia 

 by the absence {Dentalwm) or presence {Entnlis) of the cleft pro- 

 cess," Dr. Boog Watson gives some very good reasons why that 

 division "cannot be maintained."" 



D. entails L. — Alderney, " abundant on the shell-beach," and 

 " dredged alive between Guernsey and Herm (Tomlin)."^ These are 

 doubtful identifications. 



1 Proc. R.I. Acad., iSgS, vol. v., p. 25. 



2 ' Challenger ' Gastropoda, p. 9. 



3 Marquand : Marine Shells of Guernsey, etc.. Trans. Guern. See. Nat. Sci., 1901, p. 8, 

 Sep. copy. 



