302 EEV. B. B. WATSON ON THE 



p. 20. Hah. Mediterranean to Canaries. (M., L., N., Jn., 

 ~YV.) Everywhere ; very abundant. — The Marquis of Monte- 

 rosato has done a great service in showing that this species 

 is not the P. gibbus, Lam., nor the fossil P. Pliilippi, 

 Michelotti of 1839, and that his own name of P. commu- 

 tatus for the species is later than Reeve's. After following 

 him "per tot discrimina" nominum, we may hope that this 

 unfortunate species will rest under Reeve's shelter. 



232. Pecten varius, 1767, Linne (as Ostrea), Syst. Nat. p. 1146. 

 Hab. From Norway to Mediterranean. — This species enters 

 here as one given in Senhor Nobre's list, supported, how- 

 ever, by an entry in Mr. Lowe's List (Journ. Linn. Soc. 

 1860, p. 173) of shells observed at Mogador in which 

 Pecten varius occurs. Mr. Lowe's own copy, however, of 

 that paper, along with the three separate valves sent him 

 from Mogador, is in my possession, and a note appended 

 by himself states that he had not found the species, but 

 received it along with fourteen others (and probably 

 several more, see I. c. p. 172) " from Mrs. Elton." 



233. Pectunculus glycimeris, 1767, Linne (as Area), Syst. Nat. 

 p. 1143 : Gwyn Jeffreys, B. C. n. 166, iv. 4 ; & v. 175, xxx. 2. 

 Hab. From the Lofotens to Mediterranean, Mogador, and 

 Canaries. (M., L., N., Jn., W.) Eunchal, Labra, Punta de 

 Sao Lourengo, Porto Santo. Abundant. 



Pectunculus siculus, 1843, Keeve, Conch. Icon. vol. i. Monog. 5, pi. vii, 

 fig. 41. — McAndrew alone gives this species (a syn. of P. bimaculalus, Poli), 

 and he has added to it " frequent," but no one else has found it. In the 

 British Museum shells ticketed " P. siculus, presented by Mr. McAndrew," 

 are marked ' ' Canarian." The locality whence the Cambridge Museum 

 specimens belonging to his own more special collection were derived is 

 not noted, but the name attached indicates that he held the species to 

 be distinct from Pecten glycimeris. 



234. Pedipes afra, 1790, Gmelin (as Helix), Syst. Nat. p. 3795. 

 no. 194 ; Lowe, Zool. Jour. v. 296, xiii. 8-12, and P. Z. S. 

 1854, p. 217 (note under Truncatella), & p. 218 ; Deshayes, 

 Lamarck, An. s. Vert. 2nd ed. ix. 42 ; Pfeiffer, Monog. 

 Auric. I. 68; H. & A. Adams, Genera, in. pi. lxxxiii. 4, 4 a . 

 The whole credit of this species really belongs to Adanson 

 (Hist. Senegal, p. 11, pi. i. 4), who carefully, minutely, and 

 most accurately described and figured the animal and the 

 shell under the name of " Le pieton — Pedipes." Sab. 

 Erom Lisbon {see Wollaston, Test. Atlant. pp. 50, 265, 

 293) to Senegal and St. Helena. (Jn., W.) Very common 



