157 



Descriptions of marine Gastropoda from Ceylon, Sfc. ; — 

 by Messrs. G. and H. Nevill. 



[Received and read 3rd February, 1869.] 

 This paper is a continuation of the one we had the honour of 

 placing before the Society at the August meeting of last year (1868). 

 These new species, as likewise those previously described, were, with 

 one exception, collected in the Southern Province of Ceylon, mostly 

 near Balapiti ; the Rapana, one of us had previously also found at La 

 Reunion (Bourbon). We have also seen several of the small species 

 of TROCHiDiE from Bombay and Arakan, probably all of them are to 

 be met with along our coasts, though the small and interesting 

 little species, we have here named Euclielus SeycJiellarum, we have 

 never met with anywhere in these seas, except at the Island of Mahe, 

 one of the Seychelle group. 



Clanculus Ceylonicus-N. s., PL XVII, Fig. 7. 



T. parva, turbinata ; anfractibus senis, convexiusculis, albescentibus, 

 prope suturam posteriorem maculis fuscis transversaliter prolongates 

 notatis, ad suturam anteriorem puncturatis ; costulis spiralibus quinis 

 in quoque anfractu gramdosis ; suiura suhprofunda ; ultimo anfractu ad 

 peripheriam subrotundato ; basi leviter convexiuscula, granulato-costu- 

 lata, umbilicata : umbilico margine incrassato ac denticulate- circum- 

 scripta ; apertura quadrangulari, labro intus crasse costulato, labio 

 calloso, recto, ad medium obsolete, antice crasse dentato. 



Alt. 7 Mil.—Diam. maj. 7 Mil. 



Abundant. — S. Prov. Ceylon ; — also occurs at Bombay. 



Euchelus Seychellarum— N. S., pi. XVII, Fig. 10. 



T. parva, depresso-conica, sub-globulosa, alba, solidida ; anfractibus 

 quatemis, convexiusculis, suturd impressd junctis, costulis spiralibus 

 minute sed confertim granulatis ornatis ; ultimo anfractu ad peripheriam 

 rotundato ; basi convexa, spiraliter gramdato-costulata, anguste 

 umbiliccda ; apertura subrotundata : labro uniforme, arcuato, ad mar- 

 ginem obtusiuscxdo, intus sulcato ; labio recto, oblique decurrente, antice 

 denticulo parvo instructo. 



Alt. 2| Mil.—Diam. maj. 3 Mil. 



Scarce. — Island of Mahe (one of the Seychelle group). 



