from the Persian Gulf, <£•?. 7 



W'liite, foiir-wliorled, 1^ being apical, bulbous ; the umbilicus 

 is straight-walled, deep, solaiioid, but the margin, as also in 

 Fhuvina, is not crenulate ; the surface above is closely con- 

 centrically shagreened and dotted, the periphery acutely 

 keeled, upper whorls very slightly depres.sedly conical. ]k4(nv, 

 tln'Ugh imperfect, signs of a lingulate columellar callus can 

 be discerned which would partially cover the umbilicus. 

 This shell is now })laced in Ethalia only tentatively ; and 

 I have, since description, found an imperfect, but beautifully 

 sculptured specimen of probably the same species in shell- 

 sand from Port Darwin, N. Australia, received from Dr. J. 

 C. Cox. 



Fluxiva sfe)iompJiaIa^, sp. n. (PI. I. fig. 10.) 



F. testa parva, anguste umbilicata, vitrea, lactea, magnopere 

 delicata, depresse coiiica, ad peripheriam acutissime cariuulata ; 

 anfractibus 5, apicalibus duobus inclusis, ventricosulis, vitreis, 

 Isevibus, ca;teris ad snturas canalieulatis, tornatis, supra suturas 

 marginatis, ultimo aufractu circa peripheriam pulcherrime 

 deuticuhito, apud basin Isevi, circa umbiHcum angustura radiate, 

 margiiiato ; apertura angusta, labro teuuissimo, margine columel- 

 lari apud urabilicum paullulum reflexo. 



Alt. I'oO, diam, 3"25 mm. 



Bab. Gulf of Oman, lat. 25° 10' N., long. 61° 34' E. ; 

 Mekran Coast ; Charbar, 40 fathoms. 



This is the second Fluxina obtained from the Persian 

 Gulf region : the first, a smaller species, was described under 

 the name of F. dalliana f, Melv. & St., in 1903. 



Tliere have been lately introduced by Dr. Schepman two 

 beautiful small species, dredged during the 'Siboga' ex- 

 pedition, Fl. marginata and trochiformis, Schep., and the 

 latter of these has some affinity to our shell, from which, 

 indeed, it differs in size and in the much narrower umbilicus. 

 From this circumstance the trivial name is proposed. We 

 may add, the beautifully denticulate margin is the same in 

 both species, as is the general form and sculpture. It has 

 only occurred, so far, very rarely in shell-sand. 



Rissoa (Apiculan'a) town<^endi, sp. n. (PI. I. fig. 11.) 



i2. testa parva, inflata, tenuissima, alba,fragili, subrotunda; anfracti- 

 bu3 ad 5, quorum duo apicales perlajves, albi, caeteris gradatulis, 

 ad suturas multum impressis, ventricosis, nitidis, longitudinaliter 

 peroblique costulatis, costis indistinctis, superficialibus. apud 



* iTrey6fi(pa\oi, -with nnrrow umbilicus. 



t Ann. & Mag. N. H. ser. 7, vol. xii. p. 298, pi. xxl fig. 2 (1903). 



