152 MR JAMES COSMO MELVILL AND MR ROBERT STANDEN ON THE 



partially covered with bright green, somewhat shining epidermis. Mr Smith's figures of 

 this species, references to which are given above, illustrate two extremes of form admirably. 



Order Septibranchiata. 



Family Uuspidariidas. 



Cuspidaria brucei, sp. n. (Plate, figs. 19, 19a and b). 



C. testa pro genere magna, ovata, teimi, papyracea, nitida, superficie omni delicate concentrice irregulariter 

 lamellato-striata, insequilaterali, fere aequivalvi, convexa, umbonibus maxime contiguis, paullum inter se 

 erosis, margine postico dorsaliter fere recto, deinde subrostrato, ventrali, cum margine antico, leniter rotundato. 

 Pagina intus alba, lactea, nitida, dente cardinali in valva sinistra parvo, centrali, in dextra laterali lato, 

 extenso. fossa ligamentari obliqua, parva. 



Alt. 17, lat. 26-5, diam. 10 mm. 



Hab.— Lat. 39° 48' S., long. 2° 33' E., 2645 fathoms. 



A very conspicuous, creamy-white, shining Cuspidaria, of papyraceous texture, of 

 which only one example was dredged from the deep sounding given above. The 

 posterior rostrum is abbreviate, the shell otherwise being gently rounded in the fore part. 

 The umbones are close together, and detrite owing to friction. Within, the surface is pure, 

 shining white, showing traces of the external concentric lamellar striation. We should 

 place this species in the typical section of the genus {vide Smith, Rep. ''Challenger' 

 Exited., vol. xiii., pp. 35-39 ; and Dall, Bull. Mus. Comp. Zool. Harvard, vol. xii., 

 pp. 292 sqq.). To Mr W. S. Bruce, F.R.S.E., this beautiful addition to the genus is 

 dedicated. 



B. — At Ascension Island. 



Lotorium graudimaculatum (Reeve) [Tritori]. 



Hab. — Ascension Island, net, 18 fathoms, June 9, 1904. 

 Now considered a var. of L. lotorium (L.). 



Nerita (Thelieosti/la) ascensionis, Gmel. 



Hab. — Ascension Island Harbour, dredge, 25 fathoms. 



Good examples of this usually worn species, in various stages of growth. 



C. — At Saldanha Bay, South Africa. 



Cli&topleura papilio (Spengler). 

 Hab. — Two fine specimens from coaling jetty, Capetown Docks. 



Ischnochiton tigrinus (Krauss). 

 Hab. — Shore, Hontjes Bay, Saldanha Bay. 



