NORTH SIDE OF THE BAY OF BISCAY, IN AUGUST, 1906. 'Ml 



The synonymy of this species is not very clear. Locard considers 

 it to be the N. fnsca of Blainville, 1821. (Diet, des Sciences Nat.) 



The specimens under consideration are all young, b\it compare very 

 well with those in the British Museum (Nat. Hist.) from the Lif/hMing 

 and Porciqjinc expeditions. 



Station IX. 240 fathoms. Three dead. 

 ,, XII. 246 fathoms. Three dead. 



(2) Natica (Lunatia) catena (da Costa). 



Coddea catena, da Costa, 1778. Brit. Conch., p. 83, pi. v, fig. 7. 



Natica monilifera, Lamarck, 1822. Anim. s. Vert., vi, ii, p. 199. 



Natica catenata, Locard, 1886. Prodr., p. 274. 1892. Conch. Franc, 

 p. 182, fig. 157. 



Generally distributed in the European seas. 



Jeffreys does not appear to have recorded this species in his 

 mollusca of the Lightning and Porcupine expeditions, nor is it men- 

 tioned by Locard as having been found during the Travailkur and 

 Talisman expeditions, but he records it as commonly found in the Gulf 

 of Gascogny cruise of the Caudan. 



Station II. 75 fathoms. One dead. 



(3) Natica (Lunatia) alderi (Forbes). 



Natica alderi, Forbes, 1838. Malac. Monensis, p. 31, pi. ii, figs. 6, 7. 

 „ nitida, Forbes and Hanley, 1853. . Hist. Brit. Moll., iii, 

 p. 330, pi. C (100), figs. 2-4. 



Jeffreys (P.Z.S., Jan. 20th, 1885, p. 30) considered this species to 

 be identical with Linne's N. glaucina (Fauna Suecica, ed. 2, p. 533, 

 No. 2197), while Locard (" Travailleur et Talisman") decides that he 

 described under this name several European Naticas. The latter also 

 removes Natica iwliana, Delle Chiaje, from the synonymy of this 

 species, thus making it more an oceanic species by excluding it from 

 the Mediterranean list, and giving Natica poliana specific rank. 



British seas and the oceanic coasts of Europe and the Sahara coast 

 of Africa, 



Station Y. 109 fathoms. Eight dead, of various sizes. 



Station XI. 146 fathoms. One dead, small, broken. 



(4) Natica (Lunatia) montag"ui (Forbes). 



Natica montagui, Forbes, 1838, Malac. Monensis, p. 172, pi. ii, 

 figs. 3, 4. 



Lunatia montagui, G. 0. Sars, 1878. Moll. Keg. Arch. Norvegiee, 

 p. 157. 



