90 DR . GWYN JEFFREYS ON THE MOLLUSCA OF THE [Mar. 6, 



paper, which he kindly sent me, he altered the specific name to 

 curvistriatum. 



I had overlooked a specimen of this little shell among; my Shet- 

 land dredgings. The peristome and curved striae on the base show 

 that it belongs to Molleria and not to Cyclostrema. 



1/ 1. Cyclostrema serpuloides, Montagu. 



Helix serpuloides, Mont. Test. Brit. Suppl. p. 147, t. 21. f. 3. 



C. serpuloides, B. C. iii. p. 290, pi. vh. f . 3 ; v. p. 201, pi. Ixi. 

 f. 3. 



♦Lightning' Exp., St. 4. 



'Porcupine' Exp. 1880: Atl. Vigo B. 



Distribution. Bodo in Norway to Sicily and the Adriatic ; 0-80 

 fms. 



Fossil. Pliocene : Calabria. Post-tertiary : Scandinavia and W. 

 Scotland, 



Skenea divisa of Fleming, and Delphinula Icevis of Philippi. 



\y 2. Cyclostrema areolatum, G. O. Sars. 



C, areolatum, G. O. Sars, Moll. reg. arct. norv. p. 345, t. 34- 

 f. 6, a-d. 



' Lightning' Exp. St. 2. Two specimens. 



Distribution. Norway (G. O. Sars). 



Some years before the publication by Prof. G. O. Sars I had sent 

 a descri|)tion of this species, under the name of C. sculptutn, to the 

 late Sir Wyville Thomson, at his request, for the purpose of having 

 the Mollusca of the ' Lightning ' Expedition separately published. 

 That was not done ; and I mention it, because my MS. must not 

 now be regarded. This pretty little shell might be taken for the 

 very young of Trochus grmilandicus ; but the peristome is complete. 



3. Cyclostrema rtjgulosum, Jeffreys. 



C. rugiilosum (Jeffr.), G. O. Sars, Moll. reg. arct. norv. p. 129, 

 t. 21. f. 1, a-b. 



'Lightning' Exp. St. 5. 



' Porcupine ' Exp. 1870: Atl. 9. 



Distribution. Lofoten I. and W. Norway, Messina {Granata), N. 

 England {Verrill) ; 80-375 fms. 



Fossil. Pliocene : Messina (Seguema) ! 



More globular and smaller than C. serpuloides. 



^ 4. Cyclostrema basistriatum, Jeffreys. 



0. {Molleria) basistriatum, Brugn. Misc. Malach. pars ii. 1876, 

 p. 17, f. 24. 



C. basistriatum, Jeffr. Ann. & Mag. N. H. 1877, p. 234 : G. O. 

 Sars, Moll. reg. arct. norv. p. 128, t. 8. f. 8, a-c. 



'Porcupine' Exp. 1869: St. 89. 1870 : Atl. 16, 17, \7a. 



Distribution. Spitzbergen to Drbbak, ' Valorous ' Exp. ; 50- 

 1333 fms. 



