MARINE MOLLUSCA OF MADEIRA. 309 



279. Rissoa (Cingula) 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. 

 Hab. 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 R. Galvagnce, Arad. ; probably it is distinct from 

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

 as the Monog. of 1873 (I. 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. Rissoa (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 Schwarz 

 v. Mohrenstern ; the error was corrected in the ' Chal- 

 lenger ' Report, and frequently since) ; Weiukauff, Conch.- 

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

 Funchal to Punta de Sao Lourengo, at various depths. 

 Abundant. 



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



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

 xix. 11, 12. (Jn., W.) From Funchal 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 non movere. 



282. Rissoa (Pisinna) glabrata, 1824, von Miihlfeldt (as Helix), 



Verhand. naturhist. Gresellsch. i. 218, iii. 10; Philippi(as 

 R. punctulum), Enumeratio, I. 154, x. 11, & n. 130 ; 

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

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

 From Funchal to Punta de Sao Lourengo. Abundant. 



283. Rissoa (Cingula) innominata, 1897, Watson (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. JN"uov. Sicil. p. 8. 

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

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

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



