217 



DESCRIPTION OF SIXTY-EIGHT NEW SHELLS FROM THE 



PERSIAN GULF, GULF OF OMAN, AND NORTH ARABIAN SEA, 



DREDGED BY MR. F. W. TOWNSEND, OF THE 



INDO-EUROPEAN TELEGRAPH SERVICE, 



1901—1903. 

 By James Cosmo Melvill, m.a., f.l.s., f.z.s., and Robert Standen, 

 Assistant Keeper, Manchester Museum. 

 Part II. Plates C, D. 

 {Reproduced from the Annals and Magazine of Natural History, Ser. 7, Vol. XII.) 

 Continued from page 98 of this Volume. 

 SYRNOLA MUSSANDAMICA, sp. n. (PI. C. fig. 1.) 

 S. testa parva, Candida, nitida, polita, semipellucida ; anfractibua duodecim, 

 quorum duo apicales heterostrophi, bulbosi, cseteris apud suturas haud pro- 

 funde canaliculatis, nitidis, politis, ultimo longitudine penultimum et ante- 

 penultimum anfractum exsequante ; apei'tura ovata, labro haud eft'uso, tenui ; 

 columella obscure uniplicata. 

 Long. 5*50, lat. P50 mm. (sp. min.) ; long. 7, lat. 2 mm. (sp. maj.). 

 Hah. Gulf of Oman, Mussandam, 47 fathoms. 



A shining, white, polished shell, somewhat excavate at the sutures, twelve- 

 whorled, of which the five lowest are much the same girth. The apical whorls 

 are heterostrophe, in common with all of the Pyramidellidae. There is no 

 Syrnola very near this in the North-Indian fauna ; indeed, it seems to impinge 



closely on Eulimetta. 



MORMULA PERSARUM, sp. n. (PI. C. fig. 2,) 



M. testa pergracili, attenuato-fusiformi, ochraceo-brunnea, tenui ; anfractibus 

 12, quorum apicalis heterostrophus, kevis, albovitreus, cseteris ventricosulis, 

 apud suturas impressis, arete longitudinaliter costatis ; costis obtusis, crassis 

 interstitiis spiraliter liratis, liris supra ssepe evanidis, obscure undique infra- 

 suturas ad medium univel bi-albizonatis, ultimo anfractu infra peripheriam 

 ad basim planato, simpliciter spiralilirato, anfractibus interdum varicosis ; 

 apertura rotundo-ovata, labro tenui, dorsaliter varicoso, albo-stramineo 

 vel brunneo ; columella alba, recta. 



Long. 12'50, lat. (ad aperturam) 3-50 mm. 



Ilab. Persian Gulf, Gulf of Oman, Maskat, 15 fathoms. 



Allied to M. Macandrece, A. Ad., but with more regular whorls and ribs, the 



varices being fewer and less pronounced. The colour also is more uniform, 



being of a warm fuscous chestnut, and the outer lip not denticled within. 



A remarkably elegant shell. 



ACT^OPYRAMIS LMTITIA °, sp. n. (PL C. fig. 3.) 



A, testa parva, oblongo-fusiformi, alba, nitidiuscula, solida ; anfractibus 5 — 6 

 quorum apicalis heterostrophus, laevis, vitreus, cseteris apud suturas gradatulis 

 pulcherrime cancellatis et decussatis, costis ad juncturas sulcorum spiralium 

 nitidis, gemmulatis ; apertura ovata, labro paullulum incrassato ; columella 



fortiter uniplicata. 



* Lcetttia, delight, gladness. 



