136 DR. GWYN JEFFRKYS ON THE MOLLUSCA OF THE [Feb. H), 



9. SCALARIA CLATHRATULA, Adams. 



Turbo clathrufAiiiis, Adams on the .Microscope, t. \4. f. ly. 



5. dathratida, B. C. iv. p. 9fi ; v. p. 210, pi. Ixxi. f. 5. 



'Porcupine' Exp. 1870 : Atl. St. 2, 3, 3a, 9, Vigo B., 16 (and 

 Aar. prodvctci), I7a, 26-29 (and var. sjnnosa), 30, Tangier B., 

 Gibraltar B. ; Med. Benzert Road. 



Distribution. Bohuslaii, Shetland to the Channel Isles, France, 

 Spain, Portugal, Italy, Algeria, Morocco, Madeira, and New 

 England; 0-681 fms. Apparently not Belgium, as stated by M. 

 de Malzine under the name of S. pulckel/a ol' Philippi and Kieuer. 



Fossil. Pliocene : English and Belgian Crags, Biot, Nice, Monte 

 Mario, and Messina. Not Miocene, as S. clathratula of Homes, 

 which is evidently a different sf>ecies. 



This was confounded by me as well as by many other wricers with 

 S. pulchella of Bivona. That species attains to a larger size and is 

 proportionately broader ; the ribs are much more numerous and 

 crowded, and their interstices are closely and regularly striated in a 

 spiral direction. Neither Bivona nor Philippi noticed the spiral 

 striae. The present species is 8. sohda of Tiberi (Journ. de Conch. 

 1863), and S. dalliana of Verrill and Smith. 



The variety spinosa from Stations 26 to 29 of the 1870 Expedi- 

 tion has a spine at the top of each rib below the suture. It is 

 analogous to the variety lovetd of S. grcenlandica. Other species 

 and varieties are also crested in the same manner. In some speci- 

 mens of the present species the ribs are more numerous than in 

 others. The variety prodvcta from Station 16 of the same Expe- 

 dition has a longer spire and twice the usual number of ribs. 



j/ 10. ScALARiA FRONDOSA, J. & J. D. C. Sowerby. 



S.frondosa, Min. Conch, vol. vi. (1829), p. 149, t. 5/7. f. 1. 

 >S. soluta, Tiberi in J. de Conch. (1868), pi. vi. f. 3. 



'Porcupine' Exp. 1870: Atl. St. 17, 24, 26-29, 36; Med. 

 Basel Amoush, Adventure Bank, 58. 



Distribution. Bay of Biscay {de Folin), throughout the Mediter- 

 ranean {Tiberi and others), off Madeira ('Travailleur ' Exp. 1882) ; 

 20—547 tins. 



Fossil. Pliocene : Red and Coralline Crag, and from Piacenza to 

 Ficariizzi in Italy. Probably not the Antwerp Crag as S. frondosa 

 of Nyst. 



To show the number of synonyms which encumber certain species 

 like the present, being peculiar and not generally known, 1 may 

 instance the fallowing as appertaining to S. frondosa: — S. Celesti, 

 Aradas, /S'. pumila, Libassi, <S'. rvgosa, Costa, iS. crispa, Scacchi (not 

 Lamarck), /b'. eximia, v. Pecchioli, 5'. Fecchioliuna, Issel, and S. 

 Gravitellensis, Seguenza, besides S. soluta, Tiberi (1868, not 1863). 

 ^. yb/Zf/ceff of Searies Wood ap[)ears to be a varietj^ of the present 

 specits. I have already alluded to the possibility of Risso's bad 

 figure of his iS. muricata being intended to re^vQsewt S. frondosa i 

 Risso's publication was three years older than Sowerby's. 



