130 MR JAMES COSMO MELVILL AND MR ROBERT STANDEN ON THE 



Family Capididse. 



Calyptrwa costellata, Phil. 



Calyptrxa costellata, Philippi, in Arch. Naturg. (1845), p. 62. 

 Trochita corrugata, Reeve, Conch. Icon., xi., fig. 96 (1858). 



,, ,, Sowerby, Thes. Condi., v., p. 89. 



Calyptreea costellata, Phil.; H. Strebel, "Mollusken Fauna der Magalh. Prov., " Zool. Jahrb. 

 Jena (1906), p. 159, Taf. xiii., figs. 88-97. 



Hab.— Trawl, 56 fathoms, Burdwood Bank, lat. 50° 25' S., long. 51° 0' W. 

 All of the form clypeolum, Reeve, figured by Strebel, Taf. xiii., figs. 93 a, b. 



Crepidula dilatata, Lam. 



Crepidula dilatata, Lamarck, Anim. sans Vert., vii., p. 644. 



„ ,, ,, Sowerby, Thes. Conch., v., p. 65, figs. 100, 101. 



„ ,, „ Reeve, Conch. Icon., xi., 3. 



,, ,, ,, Hermann Strebel, "Mollusken Fauna der Magalh. Prov.," Zool, 



Jahrb. Jena (1906), p. 166, Taf. xiii., figs. 100, 101. 



Hab. — Trawl, Port William, Falkland Islands, 6 fathoms. 



An abundant species. The synonymy is very extensive. We have given it all, 

 briefly, in Journ. Conch., ix., p. 101. 



Family Littorinidse. 



Littorina (Lasvilitorina) caligmosa (Gould). 



Littorina caliginosa, Gould, Proc. Boston Soc, iii., p. 83 (1849). 



Hydrobia caliginosa (Gld.), E. Smith, Phil. Tr. Roy. Soc. Lond., clxviii., p. 173, pi. ix., 



fig. 8 (1879). 

 Lxvilitorina caliginosa (Gould), Pfeffer, in Mollusken von Siid-Qeorgien, p. 81, Taf. i., 



fig. 8, a-d (1886). 

 ,, ,, Pelseneer, Voy. "Belyica": Zool., Moll., p. 8. E. Lamy, "Moll, 



Orcades du Sud," Bull. Mus. Hist. Nat., t. xii. p. 112. 



Hab. — Trawl, Port William, January 31, 1904; and also Hearnden Water, 

 Falkland Islands, January 7, 1903. 



Littorina (Lsevilitorina) coriacea, sp. n. (Plate, fig. 2). 



L. (Laevilitorina) testa pertenui, coriacea, periostraco corneo brunneo-olivaceo contecta, ovato-oblonga, 

 haud nitente, anfractibus 5-6, quorum apicalis parvus, obtusus, cseteris apud suturas impressis, tumidulis, 

 apertura fere rotunda, peristomate tenui, flexili, margine columellari paullum producto. 



Long. 7, lat. 3 mm. 



Hob. — Scotia Bay, South Orkneys. Dredged at 5-10 fathoms, January 2, 1904. 

 More oblong than any form of L. caliginosa, Gould, and likewise larger than the 



