90 DR . GWYN JEFFREYS ON THE MOLLtTSCA 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 Cyclosti-ema. 



{/ 1. Cyclostrema serpuloides, Montagu. 



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



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

 f. 3. 



'Lightning' Exp., St. 4. 



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



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

 fms. 



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

 Scotland. 



Slcenea divisa of Fleming, and Delphinula Icevis of Philippi. 



i/ 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 description of this species, under the name of C. sculptum, 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 groenlandicus ; but the peristome is complete. 



3. Cyclostrema rugulosum, Jeffreys. 



C. rugulosum (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 {Seguenza) ! 



More globular and smaller than C. serpuloides. 



i^ 4. Cyclostrema basistriatum, Jeffreys. 



G. (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, 17a. 



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

 1333 fms. 



