24 PROCKEDINGS OF THE MALACOLOGICAL SOCIETY. 



14. Cyclostrema quinque-carinatom, n.sp. PI. Ill, Figs. 1, la. 



C. testa parva, profunde umbilicata, depresso orbiculari, laeviuscula, 

 nitida, albo-lactea, vel, rarissime pallide apud carinas stramineo-tincta, 

 anfractibus 5, quorum duo apicales, minuti, vitrei, cseteris spiraliter 

 acuti-carinatis, carinis paullum escavatis, superficie interstitiali omnino 

 leevissima, nitida, supernis una, ultimo anfractu quin(;[ue carinis 

 praedito ; quarum prima infra suturas secunda et tertia apud medium, 

 quarta peripberiali, quinta circa umbilicum, interdum sed rarissime, 

 sexta apud medium umbilicare (var. sex-carinatum), videnda, apertura 

 rotunda, peristomate fere continuo, vix incrassato, simplice. Alt. 1, 

 diam. 2 55 mm. 



Hah.— GuU of Oman, lat. 24° 58' N"., long. 56° 54' E., 156 fathoms. 



Probably the commonest Gastropod in the above most prolific 

 dredging. It is very uniform in size and sculpture, but occasionally 

 possesses an additional keel or stray spiral lira on the umbilicar 

 region (var. 6-carinatu)n). 



15. Cyclostrema solarielltjm, Melvill. PI. Ill, Figs. 5, 5a. 

 Cyclostrema solariellum, Melvill: Mem. Manch. Soc, vol. vii (1893), 

 p. 63, pi. i, fig. 20. 



^rt5.— Persian Gulf : Fao, Bushire. Gulf of Oman, lat. 26° 23' N., 

 long. 54° 55' E., 25 fathoms, mud; with C. ciugulatum, but much 

 more frequent. Karachi, fine and large (F. W. T.); Bombay (Aber- 

 crombie). From the last place only worn examples, from one of 

 which the type was described. 



This is a puzzling species, having the aspect of a small Torinia. 

 We take the opportunity of refiguring it in two positions, which will 

 render it recognizable at a glance. Allied to C. Marcliei, Jousseaume, 

 Eev. Zool., 1872, p. 391, pi. xix, fig. 3, from the East Indies, differing 

 in the umbilicar beading and other points. 



16. Cyclostrema supremum, Melvill & Standen. 

 Cyclostrema supremum, Melvill & Standen : Ann. & Mag. Nat. Hist., 

 vol. xii (1903), p. 291, pL xx, fig. 4. 



Rah. — Persian Gulf, near Fao, and likewise off Bunder Abbas, 

 5 fathoms, mud })ottom. 



A very beautiful form, five-whorled, two being apical, the rest 

 cancellated, chanuelled suturally, the body-whorl being thrice-keeled, 

 with interstices of surface spirally finely striate, about twenty-eight 

 small ribs in all being present. On the base and around the umbilicus 

 the shell is nearly smooth. 



Subgenus I : VITRINELLA, C. B. Adams.^ 



17. Cyclostrema charmophron,^ n.sp. PI. Ill, Figs. 2, 2a. 



C. testa minutissima, late et profunde umbilicata, teuui, depresso- 



discoidali, albo hyalina, parum nitida, anfractibus 4, nequaquam 



angulatis, quorum 2 apicales, vitrei, lagves, penultimo et ultimo apud 



' Monog. VitrtNella, 1850, pp. 1-10 (gen. propr.) ; Cat. Shells Panama, 1852, p. 184. 

 ' Xapi^ocppocv, ' he;irt-delighting.' 



