300 EEV. E. B. WATSON ON THE 



Hab. From the Bay of Biscay to Mediterranean and 

 Canaries. (M., L., N., Jn.,~W.) Very common everywhere. 



220. Patella ccerulea, 1767, Linne, Syst. Nat. p. 1259 {see Han- 



ley, Ips. Linn. Coach, p. 421) ; Philippi, Enum. i. 110, 

 ii. 84, vii. 5 ; Hidalgo, Moll. Mar. Esp. pi. 1. 1-8, li. 1, 2; 

 d'Orhigny (as P. crenata), Moll. Canar. p. 97, pi. vii. 1-8. 

 Hab. Bay of Biscay to Mediterranean and Canaries. (M., 

 L., N., Jn., W.) Very common everywhere. 



221. Patella rustica, 1767, Linne, Syst. Nat. p. 1261 ; Wood (as 



P. lusitanica, Gmel., see Syst. Nat. p. 3715), Index Test. 

 p. 188, pi. xxxvi. 66: Lamarck (as P. punctata), An. s. 

 Vert. vi. (1) 333; ed. 2 da Deshayes, to. 537. no. 34; 

 Delessert, pi. xxiii. 4 ; Eeeve (as P. nigropunctata), Conch. 

 Icon. pi. xxxiii. 57 ; d'Orbigny, Moll. Canar. p. 97, pi. vii B. 

 13-15. Hab. Bay of Biscay to Canaries. (M., L., N., Jn., 

 W.) Very common everywhere. 



222. Patella vulgata, 1767, Linne, Syst. Nat. p. 1258 ; d'Orbigny 



(as P. Candei), Moll. Canar. p. 98, pi. vii b. 11, 12 : Gwyn 

 Jeffreys (as P. vulgata), B. C. in. 236, v. 3 ; & V. lvii. 1-4. 

 Hab. From north of Norway to Mediterranean and Canaries. 

 (M., L., N, Jn., W.) Very common everywhere. 

 Patella Gussonii, see Siphonaria. 



223. Pecten corallino'ides, 1839, d'Orbigny, Moll. Canar. p. 102, 



pi. vii b. 20-22 ; Sowerby, Thes. Conch, i. 65, xii. 3, 4 ; 

 Kiister, in Mart. & Chemn. Conch. -Cab. 2nd ed. vn. pt. 2, 

 p. 58, pi. xv. 7-9 (who denies the correctness of Sowerby's 

 identification, which may however pass). Hab. Canaries 

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

 common. 



224. Pecten fenestratus, 1843, Forbes, Brit. Assoc. Eeport, 



p. 192 ; Gwyn Jeffreys (as Pleuronectia), Med. Moll., Ann. 

 & Mag. July 1870, p. 40, and (as Amusshcm) in Eeport on 

 the Lightn. & Pore. Exped., P. Z. S. 1879, p. 561 (identify- 

 ing Forbes' sp., however, with Pecten Philippii, Acton, 

 Eicerche Conch, fig. 1 = P. Actoni, v. Martens, Malak. 

 Blatter, 1857, p. 194, iii. 1-3, but mentioning at the same 

 time some remarkable features of the species which made 

 him hesitate in the identification). Kobelt, Prodromus, 

 p. 440, extends this synonymy, and in his Monograph in 

 the Conch.-Cab. 2nd ed. p. 268, pi. lxx. ft'. 7, 8 (a copy of 

 Acton's figure), quotes Verrill, Proc. U. S. Nat, Mus. 1880, 

 p. 403, and also Trans. Connect. Acad. 1882, v. p. 5S2, for 



