122 DR JAMES COSMO MELVILL AND MR ROBERT STANDEN ON THE 



(b) Tsenioglossa. 



Family Naticidie. 



Natica impervia, Phil. 



Natica impervia, Philippi, Archiv fur Naturg., vol. i. p. 65 (1845). 



Hob. Station 346, from Sponge at 56 fathoms. 

 Only very dead and featureless specimens. 



Family Trichotropidse. 

 Trichotropis antarctica, sp. n. (Plate, fig. 7). 



T. testa parva, imperforata, fragili, breviter fusiformi, sordide alba, anfractibus 6, quorum apicales tres 

 detriti, sublseves, cseteris tenuiter et arct^ decussatis, interstitiis quadratulis, ultimo caeteros exsuperante, 

 apertura ovata, labro multum expanse, inflate, margine columellari paullum excavate. 



Alt. 5-75, diam. (oris) 3-50 mm. 



Hob. Trawl, Burdwood Bank, at 56 fathoms. Station 346. 



A very interesting form, and we deem it worthy of description, albeit the only 

 specimen is imperfect, and the outer lip infested with growth of a Bryozoon. It seems 

 adult, and is comparable with no other member of the genus known to us. It is much 

 smaller in all its parts than T. inornata, Hutton, from New Zealand. There is no sign 

 of umbilication, and the epidermis is not present, being completely worn off. 



Calyptr&a chinensis, L. 



Patella sinensis, Linnaeus, Syst. Nat., ed. xii., p. 1257 (1769). 



C. sinensis, F. and H., ii. p. 463, pi. lx. figs. 3-5, and (animal), pi. B.B. figs. 8-13. 



Hob. Burdwood Bank, south of the Falkland Islands. Station 346. 

 Indistinguishable from the shell of northern climes, including Great Britain. 



Family Littorinidse. 

 Littorina (Lsevilitorina] caliginosa (Gould). 



Hob. An additional locality is Cape Pembroke, Falkland Islands, shore, 

 February 2, 1904. Station 349. 



Littorina (Pellilitorina) pellita, v. Mts. 



Hob. Additional locality for this species is Station 346, 56 fathoms, December 1, 

 1903. Lat. 54 25' S., long. 57 32' W. Obtained from new species of Cephalodiscus, 

 occasionally. 



Two more examples of Lacuna notorcadensis, M. and St., also occurred from the 

 same locality as the type. 



(HOY. soc. EDIN. TRANS., VOL. XLVIII., 348.) 



