242 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



A most exquisite sliell, surpassing:, we think, even the imposinp: 

 S. Jimhriolata, Melv., from the same seas, in ele<i;aut delicacy and 

 intricate network pattern. Alliance may be noted with the coarser 

 S. theliiterio, M. & St., also from the same region, in the chestnut 

 coloration of the upper whorls, and, to some extent, in the spiral 

 liration. Several examples have occurred, by far the largest and 

 finest being that taken as the type, and now figured. It is luiiued 

 in honour of Miss Alizon Townsend, daughter of its discoverer. 



SCALA ASPICIENDA, 11. Sp. PI. XII, Fig. 3. 



Sc. testa obloiigo-fusiformi, delicatis.sima, jiapyracea, anguste 

 riraata, caiulida, aufractibus ad 11, inclusis apicalibus 3-4, parvis, 

 nitidis, Ijevibus, pelliiciilis, cseteris ventricosulis, apud suturas 

 impi'essis, unditpie densilaraellatis, hunellis arctissimis prtecipue 

 anfractus apud siipernos (nuinero aute[)enultimi anfraetus circiter 

 50), spiraliter Isete arete liratulis, interstitiis sub lente longitudi- 

 naliter tenuissime stiiatis, apertura rotunda, labro in specimine unico 

 eJBPracto, iniperficto, paullum effuso, ad marginem columellarem 

 triangulatim reflexo. Alt. 15, diam. 6-75 mm. 



Hub. — Arabian Sea, 60 miles west of Bombay, at 40 fathoms. 



One of the most delicately-formed of the genus : ptire white, 

 papyraceous in texture, very closely lamellate, lamellse smooth, 

 thin, spirally closely lirate, the interstices between the lirations 

 microscopically finely striolate. Unfortunately the only two specimens 

 are both broken at the mouth, reducing thus both their size aiul the 

 power of describing the outer lip, which we should conjecture would 

 be very like that of the nearest ally, S. dnhia, Sowb., from the 

 Moluccas and N. Australia. That species is much of the same form, 

 outer lip roundly eSuse, thin, hut in the new form now described 

 the lamellae are tar closer and more numerous on all the whorls, 

 more especially the upper, the whorls also hardly being so tumid, 

 and increasing less rapidly than in the older form. 



ScALA Idalia, n.sp. PI. XII, Fig. 4. 



S. testa parva, sed solidula, ovato-fusiformi, :dba, aufractibus 8, 

 quorum apicales 3 laives, vitrei, cseteris ante lamellatis, lamellis 

 laevibus, albis, crassis, numero anfractum apud ultimum 12, interstitiis 

 spiraliter rudiliratis, apertura rotunda, peristomate continuo, percrasso, 

 prsecipue regionem apud columellarem fere calloso. Long. 4, diam. 

 1*55 mm. 



Hab. — Persian Gulf, Mussandam, at 55 fathoms. 



A small but decided species, both as regards form and a])pearance 

 of being adult. The lamellae are thick, proportionately speaking, 

 and smooth, with the interstitial spaces rudely lirulate. Peristome 

 continuous and extremely incrassate, particularly towards the base 

 of tlie columellar region, where this thickening is very niaiked. 

 Slightly allied to S. thelcteria., M. & St., which is, however, a more 

 delicate species, or S. deifica, which is likewise more delicate, larger, 

 and elongate. 



(Idalia, one of the names of Aphrodite.) 



