188 On the Marine Testacea of the Piedmontese Coast. 



Cylichna fragilis, n. s. PI. II. f. 16, 17. 



Testa cylindrica, nitidissima, hyalina, ad apiceni constricta et longi- 

 tudinaliter striatula, aliter Isevissima ; spira laxe involuta ; vertice 

 parum conspicuo, oblique attenuate ; apertura superne angusta, 

 infra dilatata, truncata ; long. Jg-, lat. 3*^ uncise. 



A solitary example of this remarkable shell occurred to me in 

 dredging at Spezia, in about 10 fathoms; and Mr. MacAndrew has 

 also taken it on the coast of Spain. It has somewhat the habit of 

 an Akera. 



Akera bullata, B. M. Genoa. 



Bulla Hydatis, Ph. ^ B.M.; var. minor et subglobosa; var. /3. Ph., 

 minor, viridula et Isevissima. — B. ovulata, Ph., Spezia ; and I also 

 noticed a specimen in Mr. MacAndrew' s collection in the British 

 Museum under the name of "Cylichna strigella." As the only 

 figure which has been published of this species is in a work little 

 known (Brocchi, Conchiologia Fossile Subapennina, 1814), and is not, 

 to my mind, satisfactory, 1 have added another figure of it (18, 19) 

 to PI. II. 



Scaphander lignarius, B. M. {Bulla liynaria. Ph.). 



Scaphander gibbulus, n. s. PL II. f. 20, 21. 



Testa ovata, turgida, nitidissima, hyalina, utrinque striis circiter 

 10 flexuosis versus extremitates approximantibus concentrice in- 

 sculpta, in medio Isevissima ; vertice subtruncato, umbilicato, ad 

 marginem exteriorem incrassato; apertura in medio coarctata, 

 superne angulata patula, subtas canaliculata ; columella ad basin 

 uniplicata ; long. \ fere, lat. ^-^ uncise. 



In from 10 to 12 fathoms, Bay of Spezia; not uncommon. The 

 animal is flesh-coloured. 



Philine aperta, B. M, (BuUsea aperta. Ph.). — P. catena, B. M. 

 Nice. 



Aplysia depilans, Ph. (A. hybrida, B. M.). — A. punctata, Ph. — 

 A. depressa, Cantraine, and other species which have been published 

 in the * Journal de Conchiliologie ' for 18.53. 



Pleurobranchus aurantiacus. Ph. — P. stellatus. Ph., and other 

 species, for which reference must also be had to the last-mentioned 

 publication. 



Umbrella Mediterranea, Ph. Nice. 



Cephalopoda Dibranchiata, or Cuttles. 



Argonauta Argo, Ph. 



Sepia officinalis, Ph. ^ B. M., and other species, which have been 

 so admirably described and figured by Verany in his splendid work. 



The total number of species named in the above lists amounts 

 to 375. 



