MARINE MOLLUSC A OP MADEIRA. 295 



178. Murex (Ocinebra) medicago, 1897, Watson, antea, p. 242. 



179. Murex {Pseudomurex) Meyendorfii, 1845, Calcara, Cemio, 



p. 38, iv. 32 ; Kobelt, Jahrb. Mai. Ores, i. 1874, p. 222, 

 ix. 1. Hab. Mediterranean. (L., N, Jn., W.) Prom Punchal 

 to East point and Porto Santo. Abundant. 



Mytilus, see Avicula. 



Mytilus edulis, L. — This is a species which Seuhor Nobre gives under var. 



M. galloprovincialis. Johnson's collection contains two valves. I have 

 several, chiefly young, but all got in circumstances and with the appear- 

 ances of having been brought in ballast. Belonging to the North Pacific, 

 probably, and under diverse forms and names from Baffin's Bay to the 

 Mediterranean, its presence in Madeira is not improbable, but I am 

 not sure that Seuhor Nobre, on review of its claims, still supports 

 them. 



180. Nassa antiquata, 1897, "Watson, antea, p. 241. 



181. Nassa costulata, 1804, Benieri (as Buccinum), Tav. Conch. 



Adr. ; Philippi (as B. variabile), Enum. i. 221, xii. 6 j 

 Payraudeau (as B. Cuvieri), Moll. Corse, p. 163, viii. 17, 

 18. Sab. Prom Portugal to Mediterranean. (L., Jn., W.) 

 Everywhere ; very common. 



182. Nassa incrassata, 1777, Strom (as Buccinum), Norsk. 



Selskab. Vid. iv. 369, xvi. 25 : Gwyn Jeffreys, B. C. iv. 351 ; 

 & v. 219, lxxxviii. 1. Hab. Prom Iceland to Mediterranean 

 and Mogador. (M., L., N., Jn., W.) Everywhere ; very 

 common. 



183. Nassa limata, 1808, Chemnitz (as Buccinum), Conch.-Cab. 



xi. 87, clxxxviii. 1808-9 ; Philippi, Enumeratio (as B. pris- 

 maticum), i. 219 ; Broccbi (as B. prismaticum), Subappen. 

 ii. 337, v. 5-7. Dates from Upper Pliocene onwards. 

 Hab. Mediterranean to Canaries. (M., L., JN"., Jn., W.) 

 Everywhere ; very common. 



184. Nassa reticulata, 1767, Linne (as Buccinum), Syst. Nat. 



p. 1204 : G-wyn Jeffreys, B. C. iv. 346, vi. 4; & v. Ixxvii. 3. 

 Dates from Lower Pliocene. Hab. Prom North Norway 

 to Black Sea and Mogador. (L., Jn., W.) Porto Santo, 

 Porto Moniz. Not common. 



185. Nassa Watsoni, 1877, Kobelt, Iconog. europ. Meeres-conch. 



Heft 7, p. 151, xxvi. 5, 6. " Madeira," Canaries. Hab. 

 The Selvagens (not in Madeira proper). At the Canaries 

 it is common. (L., W.) 



186. Natica Dillicynii, 1826, Payraudeau, Cat. Moll. Corse, p. 120, 

 pi. v. ff. 27, 28 ; Philippi, Conch.-Cab. 2nd ed. n. pt. 1, p. 69, 



