51 



DESCRIPTIONS OF TWEXTY- THREE SPECIES OF GASTROPODA 

 FROM THE PERSIAN GULF, GULF OF OMAN, AND ARABIAN 

 SEA, DREDGED BY MR. F. W. TOWNSEND, OF THE INDO- 

 EUROPEAN TELEGRAPH SERVICE, IN 1903. 



By J". Cosmo Melvill, M.A., F.L.S. 



Read 8th January, 1904. 



PLATE V. 



The following species of Gastropoda were mostly dredged by Mr. F. W. 

 Townsend at one particularly favourable station in tbe Gulf of Oman, 

 early in April, 1903. It will be long before a complete catalogue can 

 be drawn up of the exceeding riches of this one spot. In the meantime 

 twenty-three new forms are now added to the fauna, the larger part 

 of them being, as usual, Pleurotomidae. I must again express my 

 great indebtedness to Dr. \Y. H. Dall and Mr. Edgar A. Smith, I.S.O. 

 Mr. J. W. Jackson has also kindly spent much time in sorting shell- 

 sand from the dredging just mentioned, as have Mr. Ernest R. Sykes, 

 Mr. G. B. Sowerby, and Mr. Robert Standen. 



LoTORiuM (Coltjbraria) coNcrNiirATUM, n.sp. PI. V, Fig. 1. 



L. testa oblongo-fusiformi, mediocri, solidiuscula, brunneo-rufescente, 

 anfractibus 8, quorum tres vel quatuor apicales Iseves, laete brunnei, 

 globulosi, cseteris irregularibus, superncialiter pulchre decussatis, 

 ad juncturas lirarum arete gemmulatis, varicibus crebris, transversim 

 albis et brunneo-rufis fasciolis variegatis, apertura triangulatim 

 oblonga, labro incrassato, intus multidenticulato, regione columellari 

 nitida, alba, canali brevi, vix recurva. Long. 21 '5, lat. 8 mm. 

 (sp. maj.). 



^«*.— Persian Gulf, Gulf of Oman, lat. 25° 23' N., long. 50° 40' E., 

 35 to 41 fathoms. Also ofp the Mekran coast, Charbar, 9^ fathoms. 



The example taken as the type came from Charbar ; the smaller 

 specimens all show the apical whorls, smooth, globular, semi-pellucid 

 brown, very clearly. The whorl surface is clearly decussate, the lirse 

 at the points of junction being gemmulate. The varices are numerous, 

 and elegantly banded with alternate white and reddish-brown fasciae. 



Allied to Z. ( Colubraria) reticulatum, Blvlle., from the Medi- 

 terranean, and L. Cetjlonense, Sowb., also an inhabitant of the 

 Arabian Sea and Persian Gulf. 



BULLIA. (PsEUDOSTROMBtTS) STRENARIA,^ n.Sp. PI. V, Fig. 10. 



B, testa fusiformi, rapide attenuata, solidula, anfractibus 11, quorum 

 apicales tres - quatuor, albo - vitrei, pellucidi, perlseves, tumiduli, 

 mamillares, cseteris apud suturas impressis atque crenulatis, supeme 



^ Strena, a New Year's gift. 



