134 DR. GWYN JEFFREYS ON THE MOLI.USCA OF THE [Fcb. 19, 



Distribution. Bay of Biscay (' Travailleur ' Exp. 1880 and 1881), 

 southern districts of the Mediterranean and coasts of northern 

 Africa, and the Adriatic ; 70-552 fins. 



S. kuzmici of Briisina. Tiberi considered the present species 

 ;S'. muricata of Risso ; but I cannot agree with him in this deter- 

 mination. Risso's figure 45 looks more like S. frondosa, and his 

 description of S. muricata may be applicable to almost any species. 



This is a more slender shell and has fewer ribs than /S'. trevelyana 

 of the same size. The young of (S. turtonce is also more conical, 

 and the ribs are compressed and continuous, instead of being sharp 

 and muricated or prickly at the top of each whorl. Some of the 

 ribs are occasionally varicose or dilated as in other species of 

 Scalaria. 



(/ 6. Scalaria algeriana, Weinkauff. (Plate X. fig. 5.) 



S. coronata, Weink. in Journ. de Conchyl. x. p. 348. 



S. alyeriana, id. in op. cit. xiv. pp. 241, 247. 



'Porcupine' Exp. 1870: Atl. St. 17«, 26-34, 3Q ; Med. 50, 

 Adventure Bank. 



Distribution. C. Breton {de Foliri) ; and the Mediterranean 

 coasts of Spain, Italy, and Algeria ; 15-130 fms. 



Fossil. IPliocene : Siena, Reggio, and Messina. 



I do not agree with Hidalgo that this is the S. uncinaticostn of 

 d'Oibigny (Moll. Cuba, pi. xi. f. 25-27), which is described as 

 " rosea, anfractibus 9, costis 1 1 crassis, inaequalibus." After a 

 careful examination and comparison of Weinkauff's descriptions of 

 his S. alyeriana and iS. schultzii with each other as well as with his 

 typical specimens of those species, I have failed to make out any 

 difference between them. Both have the interstices of the ribs 

 spirally or transversely striated in the same manner. The present 

 species also agrees with S. jmlchella of Bivona in that respect ; but 

 the spiral striae are finer and less distinct in ;S. pulchella than in 

 *S'. alfjeriana, the longitudinal ribs are more than twice as many in 

 the iormer as in the latter species, and the shape is rather conical 

 instead of cylindrical. Another synonym of /S'. algeriana is S. multi- 

 lineata of Philippi (Zeitschr. f, Mai.) ; but that name was pre- 

 occupied by Say lor a well-known North-American species. Sissoa 1 

 coronata of Scacchi, described and figured by Philippi in his work 

 on the INIollusca of the two Sicilies, being the same species as <S. 

 hellenica of Forbes, perhaps coronata ought to replace algeriana ; 

 but it is immaterial. 



> 7. Scalaria nana\ Jeffreys. (Plate X. fig. 6.) 



Shell conical, of a delicate texture, semitranspareut, not glossy : 

 sculjiture, numerous and close-set curved lanielhir ribs or ridges, of 

 which there are about 30 on the body-whorl ; the interstices are 

 crossed by a few spiral striae : the first 3 or 4 whorls are smooth 



Dwarf. 



