1871.] G-. and II. Novill— Descriptions of new Mollusca. 5 



anguste umbilieato ; labro acuto, crenulato seu minute fimbriato ; 

 labio tenui, hevi, paululum curvato. 



Long. 6£, Diam. 5, Alt. apert. 4, Diam. apert. 2 \ m.m. 



Eare ; S. Province, Ceylon. 



Syrnola dubiosa, n . sjp. t PI. I, Fig. 19, 



T. parva, angusta, subnlata, lsevis, vix perforata ; anfractibus 10, 

 planis, sutura distincta, paulo impressa, simplici junctis ; apertura 

 parva, subovata, postice acute angulata, antice latiuscule sub-rotun- 

 data ; columella paululum reflexa, obliqua, tenui, uniplicata. 



Long. 7, Diam. 2 m.m. 



This small species closely resembles S. attenuata, A. Ad., but 

 can be distinguished by its only having ten whorls, by its slightly 

 less acuminate form, by the absence of any transverse striation 

 and by the unusually indistinct plait on the columella. The ape r- 

 ture is contracted posteriorly and rounded at the base. 



Sands at Pooree, Bay of Bengal, (Eaban). 



Niso pyramidelloides, n. sp., PI. I. Pig. 14. 



T. angust>a, subulate acuminata, nitens, lsevis ; anfractibus qua- 

 tuordecimis, planulatis, anfractu ultimo ad basin sub-angulato ; 

 sutura sub-indistincta ; anfractibus fascia castanea ad suturam 

 inferiorem cinctis, ultimis quinis supra medium fascia simili notata ; 

 apertura compresse sub-rhomboidea, antice et postice angulata, 

 marginibus tenuibus. 



Long. 11, Diam. 3. Alt. apert. 2J, Diam. apert. 1^ m.m. 



This species cannot be confounded with any other of the genus 

 in form, as also in the manner in which the whorls are belted ; it 

 bears considerable analogy to one or two known Pyramidellce, such 

 as P. pulchella, Ad. &c. The second brown belt, showing only 

 on the last five whorls, is a remarkable characteristic ; it is also 

 the narrowest and most contracted species of the genus yet de- 

 scribed. 



Sands at Pooree, Bay of Bengal, (Eaban) ; Malacca and Penang, 

 dredged in 3 fathoms on sandy ground (Dr. Stol.) 



Leptocoxchits Eobillakdi, Lien. PI. I. Pig. 1 . 



Journ. de Conch. 1870, XV. p. 305. 



This handsome and peculiar species reminds one, somewhat, of 



