312 EEV. E. B. WATSON ON THE 



292. Bissoa {Alvania) spreta, 1873, Watson, P. Z. S. p. 373, 



xxxiv. 9. (Jn., "W.) Santa Cruz, Machico, Labra, Punta de 

 Sao Lourengo, Porto Santo ; 20 to 50 fms. Excessively 

 abundant. — This species was named, described, and figured 

 as a possible variety of R. Macandrewi, but that opinion is 

 really not tenable. 



293. Bissoa {Onola) striata, 1797-1800, Jobn Adams (as Turlo), 



Tr. Linn. Soc. iii. QQ, xiii. 25, 26 : Gwyn Jeffreys, B. C. iv, 

 37 ; & Y. 208, Ixviii. 2 ; Watson, P. Z. S. 1873, p. 368 (the 

 var. lirata, Wats. I. c. pi. xxxiv. fig. 3). (Jn., W.) Every- 

 where, but never abundant. 



294. Bissoa (?) tenuisoulpta, 1873, Watson, P. Z. S. p. 389, xxxv. 



28 ; WeinkaufF, Conch.-Cab. 2nd ed. i. pt. 22, p. 148, xviii. 

 6, 7. Sab. Erom Bay of Biscay to Mediterranean, in very 

 deep water. (W.) Euncbal, Punta de Sao Lourengo. Very 

 rare. 



295. Bissoa violacea, 1814, Desmarest, Bull. Soc. Phil. p. 8, pi. i. 



8; Watson, P. Z. S. 1873, p. 378, xxxv. 14; Weinkauff, 

 Conch.-Cab. 2nd ed. i. pt. 22, p. 110, ii. 17-19, xvii. 4-6. 

 Sab. Erom Norway to Mediterranean and Canaries. (M.,^ 

 Jn., W.) Porto Santo. There alone, but in abundance. 

 — By a slip of the pen McAndrew gives this species both 

 for the Canaries and for Madeira as B. purj)urea. 



296. Bissoa Watsoni, 1873, Schwarz v. Mohrenstern in litt. ; 



Watson, P. Z. S. 1873, p. 375, pi. xxxv. fig. 11 ; Weinkaufi", 

 Concb.-Cab. 2nd ed. i. pt. 22, p. 174, xxii. 10, 11. (Jn., 

 W.) Everywhere ; abundant. 

 Eoxaniella, see Atys. 



297. Saccicava (Saxicavella) carinata, 1811, Brocchi (as Mytilus), 



Concb. Eoss. Subappen. 1st ed. p. 585, & 2nd ed. ii. 406, 

 xiv. 16 ; Searles Wood, Crag Moll. ii. 289, xxix. 5 a-e. 

 Hob. Mediterranean, but existing from tbe later Tertiary 

 period. (Jn., W.) Eunchal, Cruz Point. Yery local, but 

 not rare. 



298. Saxicava {Saxicavella) plicata, 1809, Montagu (as Mytilus), 



Test. Brit., Suppl. p. 70 : Grwyn Jefireys, B. C. in. 75, iii. 

 2 ; & Y. Ii. 1 (as Panopcea). Sab. Erom the Shetlands to 

 the Mediterranean. (L., Jn., W.) Everywhere; very 

 abundant. 



299. Saxicava rugosa, 17Q7, Linne (as Mytilus), Syst. Nat, 



p. 1156 : Gwyn Jeffreys, B. C. in. 81, iii. 3; & y. 192, Ii. 3. 



