MKLvrr.L : nkw motxusca from the Persian golf, etc. 77 



conici, apicp. ipso inaono, omnino loevissimis, ultimo spiraliter ohs("ure 

 trizonato, zonis rufulis, apertura oblonga, labro incnissato, nitido, 

 simplice, columella obliqua, 4-plicata. Long. 9, lat. 4 mm. 



i/«i.— Persian Gulf, Gulf of Oman, Maskat, 15 fathoms (1902). 



Allied to 31. ( Volvaria) secaUna, Phil., a Mediterranean species, of 

 which M. nifida, Hinds, wrongly included in the subgenus Cryptospira, 

 Hinds, by Tryon (Man. Conch., vol. v, p. 34), is perhaps a variety. 

 31. are7ia, Valenc, from the Antilles; Ueniata, Sowb., from the Cape 

 de Verd Islands; and Verdensin, E. A. 8m., are likewise near allies; 

 indeed, Mr, Standen and I included this species under the latter name 

 in our general catalogue of Persian Gulf species, and it must now be 

 eliminated, and the name eumorpha substituted. 3f. gracilis, C. B. Ad., 

 another West Indian shell, is akin, but our species is not so attenuate. 



I am much indebted to Mr. G. B. Sowerby for first having called 

 my attention to these two Voharice, and especially for his having 

 ctuefully compared them with existing types and specimens in our 

 national collection. 



? Drillia TnisBE, n.sp. PL VIII, Fig. 20. 



D. testa parva, fusiformi, alba, solida, anfractibus 6, quorum 3 

 apicales vitrei, perloeves, cfeteris undi(iue spiraliter densiliratis, liris 

 crassis, interstitiis sub lente obscure lougitudinaliter striatulis, apertura 

 ovato-oblonga, labro paullum etfuso, columella fere recta, simplice. 

 Long. 6, lat. 1-75 mm. 



Only a few examples occurred of this white, fusiform, little species, 

 very likely not full-grown. The close spiral lirae conspicuously 

 covering the whole surface, and the absence of sutural impression, are 

 the chief characteristics. It resembles no other Persian Gulf or 

 Arabian Sea species, excepting, perhaps, D. cirmmvertens, M. & St., 

 and in a lesser degree D. audax, from the same locality. It has been 

 suggested that it may be the juvenile form of a Buccinoid species, but 

 I am inclined to hold to its being a member of the Pleurotomidae. 

 Mangilia biplicata, n.sp. PI. VIII, Fig. 21. 



M. testa parva, alba vel albo-straminea, ovato-fusiformi, solidula, 

 anfractibus 7-8, quorum 2-3 apicales Isevissimi, straminei, nitidi, 

 vitrei, ca3teris ad medium angulatis, et carina inferiore infra medium, 

 juxta suturas, undique lonj^itudinaliter crassicostatis, costis ultimi 

 anfractus numero ad 9, spiraliter liratis, liris paucis, crassiusculis, 

 ultimo ad basim multilirato, apertura ovata, sinu perlato, labro paullum 

 incrassato, intus tridenticulato, columella eonspicue biplicata, cauali 

 paullum producto. Long. 7, lat. 2 mm., sp. maj. ; long. 4, lat. 1 mm., 

 sp. min. 



Varying much in size, as is seen by the dimensions given above, 

 this small Mam/ilia belongs to the same alliance as spurca, Hinds, 

 soror, Smith, inhabiting the same seas. Such as these, however, are 

 giants compared with even the largest example of this pigmy form. 

 Daphnella Sabrina, n.sp. PI. VIII, Fig. 22. 



D. testa ovato-fiisiforrai, delicata, alba, pulcherrime cancellata, 

 anfractibus 8, quorum 3-4 apicales ochracei, arete et minutissime 

 decussati, ceteris apud suturas impressis, antepenultimo spiraliter 



