2 PROCEEDINGS OF THE MALACOLOGICA-L SOCIETY. 



niticla, tenui, anfractibus quatuor, ventricosulis, apud suturas im- 

 pressis, applanatis, lajvissimis, apertura lunata, pcristomate tenui 

 simplice, marginem apud columellarem triangulatini reflexo. Loug. 

 3-75, lat. 4-50 mm. 



J?«J.— Dhofar. 



A very pretty shining, dcpressedly conical, thin, horn-coloured 

 species, narrowly umbilicate, with the whorls uniformly very smooth, 

 slightly swollen, impressed at the sutures, peristome thin, but tri- 

 angularly reflexed over the columellar margin, mouth lunate in form. 



3, Otopoma Dhofarexse, n.sp, PI. I, Figs. 9-11. 



0. testa crassiuscula, umbilicata, conica, cinereo-albida, anfractibus 

 qiiinque vel sex, ventricosis, arete clathrato-liratis, longitudinalitcr 

 iudistincte striatulis usque ad medium anfractus ultimi, infra, usque 

 ad basim, Icevissima, umbilico profundo sed angusto, apertura rotunda, 

 pcristomate continuo, expanse, margine columellari tiiangulatim re- 

 flexo, umbilicum semi-obtegente. Long. 10, lat. 10mm. 



Sal). — Dhofar. 



Three specimens, all in dead condition, and almost colourless, but 

 showing the sculpture, etc., very satisfactorily. The shell is conical, 

 somewhat thickened in substance, umbilicated, five or six whorled, 

 closely latticed, and longitudinally indistinctly striated above, the 

 lower half of the last wliorl, towards the base, being perfectly smooth. 

 The mouth is round, peristome continuous, expanded, and triangularly 

 reflexed over the columellar margin. 



4. Otopoma coxsimile, n.sp. PI. I, Figs. 5-7. 



0. testa umbilicata, depresso-conica, albo-calcarea, crassiuscula, 

 anfractibus 4^-, sub lente clathrato-lii'atulis, ultimo anfractu apud 

 medium et infra ad basim perlsevi, nitido, apertura rotunda, pcris- 

 tomate incrassato, continuo, marginem ad columellarem paullum 

 effuso, umbilicum nequaquam obtegente. Long. 8, lat. 10 mm. 



iZ"«^i.— Dhofar. 



Vciy similar to the last species (0. Bhofarense), but differing in 

 being markedly more depressed. The sculpture of both species is to 

 a great extent the same, though clearer and shaiq)er in tliis shell. 

 Two specimens, one juvenile, and showing transverse sculpture on 

 the basal half of the last whorl, which is probably the case in all 

 the immature specimens of this section of the genus Otopoma. 



5. Otopoma Hadkajiauticum, n.sp. PL I, Figs. 1-3. 



0. testa incrassata, globoso- conica, subnitente, ochraceo-fulva, 

 anfractibus quinque, ventricosulis, supra striatulis, ultimo ad basim 

 la)vissimo, in medium apud pcripheriam cingulo fulvo decorate, callo 

 umbilicari albido, nitido, apertura rotunda, pcristomate paullum reflexo. 

 Long. sp. maj. 16 mm., lat. 18 mm. 



//rt^*.— Dhofar. 



Three mature specimens, and a fourth, evidently an immature shell, 

 showing a deep umbilicus. The smallest of these four (long. 13, 

 lat. 15 mm.) is in live condition with operculum, and of a warm 



