184 Mr. J. G. Jefireys on the Marine Testacea 



ulvse, B. M.) .— R. cingillus, B. M. — R. rubra, B. M. (R. fulva, Ph.) ; 

 var. unifasciata. — R. ? littorea, B.M. (Tnuicatella littorina, Ph.). 



Rissoina Bruguieri, U Orb. (Rissoa Bruguicri, Ph.), R. decussata. 

 Nice. — R. Chesnelii, Mich. Nice. — R. maryinata, Mich. Nice. 



Jeffrey sia diaphaua, B. M. 



Jeffreysia cyhndrica, n. s. PI. II. f. 8, 9. 



Testa lougo-cyUudrica, ad apicem obtusa, hyaUua ; aafractibus 4, 

 brevissimis, nitidis, ultimo reliquos superante ; sutura distincta ; 

 apertura ovata, subeftusa, 4 spirse partem sequaute, margiue sub- 

 comiexo ; umbilico angusto ; long. gL, lat. -J^ uncise. 



Of this very minute but peculiar species I took only one speci- 

 men, by dredging in about 12 fathoms at Spezia. It approaches 

 somewhat in form the Chemnitzia Gulsonse of Clark, which I think 

 ought to be referred to the same genus. 



Skenea planorbis, B. M. The Mediterranean specimens, like those 

 from Guernsey, are girdled with a single row of circular reddish- 

 brown spots. — S. nitidissima, B. M. (Truncatella atomus, Ph.). — S. 

 rota, B. M. ^Mediterranean specimens are girdled with three bands 

 of reddish-brown, one on the outer edge or periphery, and the others 

 on the upper and under side of each whorl ; which, with the striae, 

 render them exquisitely beautiful objects. — S. exilissima (Delphinula 

 exilissima, Ph.). 



Turrit ella communis. Ph. ^- B. M. — T. triphcata. Ph. 



Turritella? pusHla, n. s. PI. II. f. 10, 11. 



Testa turrita, lutea vel fusca, solidula ; anfractibus 12, convexiuscu- 

 lis, interdum varicosis, plicis 8 longitudinalibus (quarum 3 mediae 

 promiuentiores) costellisque transversis (^in ultimo anfractu 8, in 

 penultimo 5) decussatis, in superioribus anfractibus nodulis eifor- 

 matis ; sutura profunda ; apertura ovato-rhomboidea, subeffusa, 

 sextam spirae partem aequante ; long \, lat. -^ unciae. 



In about twelve fathoms. Gulf of Spezia ; not common. It has 

 somewhat the habit of a Cerithium, but differs in its shorter spire, 

 and, above all, in the form of its aperture. 



Caecum trachea, B. M. (Odontidium ruijulosum. Ph.). — C. glabrum, 

 B.M. 



Aporrhais pes-pelicani, B. M. (Chenopus pes-pelicani, Ph.). — A. 

 descisce/is (Chen, desciscens. Ph.). 



Cerithium vulgatum, Ph. — C.fuscatum,PA. ; var. minor. — C. mam- 

 vdllatum. Ph. — C. reticulatum, B. M. (C. hma. Ph.) ; var. major; 

 var. /?. Ph. — C. angustissimum, Forbes (Report on ^Egean Inverte- 

 brata, 1843). — C. adversum, B. M. (C. penersum. Ph.). 



Scalaria communis. Ph. S,- B. M. — S. Turtonis (S. tenuicosta. Ph.). 

 — S. pseiiJoscah/ris, Ph. — S. pnlchella, Ph. 



Vermetus semisurrectus, Ph. — V. subcancellatus. Ph. — V . yigus. 

 Ph.— V . glomerntits, Ph. 



Siliquaria angvina, Ph. Nice. 



