EISSOTD.'E. 103 



I have followed Herr Scliwai-tz in not considering it desir- 

 able to change the specific name to cost at a. 



17. Eissoa subcostulata. 



Rigsoa subcostulata, Schwartz von Mohrenstern, Denis K. Ale. Wissenx. 

 Wien, XIX, 1860, for E. costulata, Alder, 1844, not of Risso 1826 [ = B. 

 variabilis, Mhlf] 



20 Weymouth, &c. ; coll. G. Nevill, Esq. 



var. sublsevis. 



28 Algiers, &c., Mediterranean ; coll. P. Joly, Esq., and Herr Schwartz 

 vou Mohrenstern. 



Some of these were sent me by M. Joly as " var. Icevis.^' 



18. JRissoa pulehella. 



Rissoa pulehella, PMlippi, Enuin. Moll. Sicil., 1836. 



6 Mediterranean : coll, Herr Schwartz von Mohrenstern. 



19. Rissoa similis. 



Rissoa similis, Scacch), Catal. p. 14, 1836, Italy ; fide Jeffreys, small var. of 

 K. costulata. Alder. 



30 Mediterranean ; ex c. Dr. F. Stoliczka and Herr Schwartz von 



Mohrenstern. 



15 Algiers ; coll. P. Joly, Esq. 



var. Isevis. 



R. similis var. Isevis, Walson, P. Zool. S. 1873, Madeira ; fide Monter. 

 jR. gemmula, Fischer, Foiids de la Mer, pi. XXIII, Gulf Oascony. 



16 Algiers; coll. P. Joly, Esq. 



20. Eissoa parva. 



Turbo parvus. Da Costa, Brit. Conch. 1779 ; fide Jeffreys, vars. ititempta 

 Ads. and exilis, also= Cingula alba, Fleming, S(c. 



100 Mediterranean, N. W. France, England, and Biarritz ; coll. Miss Beau- 

 fort, Herr Schwartz von Mohrenstern, and G. Nevill, Esq. 



