MAEINE MOLLFSCA OF MADEIBA. 309 



279. Rissoa {Gingula) depicta, 18(38, Manzoni, Jour, de Conch. 



p. 168, X. 4 ; Watson, P. Z. S. 1873, p. 382, xxxv. 20 ; 

 "Weinkauff, Conch.-Cab. 2nd ed. i. pt. 22, p. 152, xviii. 12. 

 Hal. Canaries and Madeira. (Jn., W.) From Funchal to 

 Punta de Sao Lourengo. Abundant. — This Madeiran species 

 is quite obviously distinct from R. semistriata, Mont., and 

 from B. Oalvagnce, Arad. ; probably it is distinct from 

 Manzoni's species and would be better called R. punctifera, 

 as tbe Monog. of 1873 (Z. c.) suggests, but satisfactory 

 specimens of Manzoni's Canarian R. depicta are wanting 

 for present revision. I leave it therefore as given in the 

 P.Z. S. of 1873. 



280. Bissoa (Alvania) euchila, 1886, Watson, P. Z. S. 1873, 



p. 377, pi. XXXV. 13 (as R. novarensis, but not that of 

 von Frauenfeld as stated on the authority of Baron Scbwarz 

 V. Mohrenstern ; tbe error was corrected in tbe ' Chal- 

 lenger ' Eeport, and frequently since) ; WeinkaufF, Conch.- 

 Cab. 2nd ed. i. pt. 22, p. 147, xviii. 14. (Jn., W.) Prom 

 Puncbal to Punta de Sao Lourenco, at various depths. 

 Abundant. 



281. Rissoa (Crossea) gihhera, 1873, Watson, P. Z. S. p. 371, 



xxxiv. 7 ; Weinkauff, Conch.-Cab. 2nd ed, i. pt. 22, p. 158, 

 xix. 11, 12. (Jn., W.) Prom Punchal to Punta de Sao Lou- 

 rengo and Porto Santo. Abundant. — I do not believe this 

 species to be a Rissoa, and doubt the claim of Crossea to be 

 there admitted ; but with entire ignorance o the animal, 

 it is better quieta iion movere. 



282. Rissoa (Pisinna) glair at a, 1824, von Miihlfeldt (as Helix), 



Verhand. naturhist. G-esellsch. i. 218, iii. 10; Philippi(as 

 R. punctultMn), Enumeratio, i. 154, x. 11, & ii. 130 ; 

 Watson, P. Z. S. 1873, p. 386, xxxvi. 24. Hab. Prom Bay 

 of Biscay to Mediterranean and Canaries. (L., Jn., W.) 

 Prom Punchal to Punta de Sao Lourenco. Abundant. 



283. Rissoa (Cingula) innominata, 1897, Watsou (1873 as 



R. concinna, Monterosato), P. Z. S. 1873, p. 381, xxxv. 19. 

 (Jn., W.) Everywhere ; abundant. — There is difficulty 

 over both the differentiation and the name of this species. 

 In 1869 the Marquis of Monterosato published a Medi- 

 terranean species as R. concinna (see Test. Nuov. Sicil. p. 8. 

 no. 2). In 1875 (Nuov. Eevista, p. 26) he ranked it as a 

 var. of R. Galvagni, Arad. ; but in 1878 (Enumerazione &c, 

 p. 26) restored it to specific rank, but marked that the name 



