TIARA. 37 



regularibus, subobliquis, superne in spinis productis ; spinis longis, 

 tenuibus, irregularibus, extortis ; lineis transversis, crebris, parvis, 

 subalternantibus ; anfractu ultimo parvo, ad basim lineato ; aper- 

 tura elliptica, inf'erne effusa ; labro inferne producto ; columella 

 parva, inferne incrassata. 



Alt. 20, diam. 10 mm. 



Hob. Ceylon ; also occurs in the Philippines, Sumatra, etc. 



KeviH is his ' Hand List Moll, in Ind. Mus., Calcutta,' p. 281, 

 gives the following varieties, all from the Andaman Islands. 



Var. roepstorffiana, Nevill. 



Long. 18|, diam. 9| mm. ; whorls 7. 



Very near M. Brot's pi. 28, fig. 10 A. [Philippines]. 



Subvar. brevispira, Nevill. 

 Long. 12|, diam. 6| mm. 



Subvar. subscabra, Nevill. 



Long. 14J, diam. 7f mm. A connecting link with Tiara (P.) 

 scabra, the spines being rather less developed. 



Subgenus MAINWAEINGIA. 



Maimoannyia, Nevill, Hand List, 1884, pt. 2, p. 286. 



TYPE, Melania (Mainwaringid) paludomoidea, Nevill ; Gangetic 

 Delta. 



Range. Gangetie Delta. 



Original description : " apparently connecting Melania 



and Paludomus, distinguished by the presence of rows of hairs or 

 bristles, especially noticeable on the body whorl, which is orna- 

 mented with broad revolving brown bauds ; not umbilicate ; apex 

 remarkably acute, ' quasi styliform ' ; peristome acute, columella 

 thickened and excavatedly inflected. Operculum transparent, of 

 one substance throughout that is, without any thickened process 

 for attachment of very light horn-colour, without sculpture, 

 ovate, acuminate at one end, at the other rounded, and distinctly 

 terminally subspiral, with 2| whorls, closely resembling Adams' 

 pi. 35, fig. 10 A-B, operculum of Hydrobia ulvce." 



63. Tiara (Mainwaringia) paludomoidea, Levitt. 

 Tiara (Mainwarinyid) paludomoidea, Nevill, torn. cit. 



Original desertion : [Shell] imperforate, conically produced,, 

 spire turretedly acuminate, apex very acute, suture distinct ; of a 

 rather yellowish, bright " horn-colour," girt on the last whorl with 

 three distinct, broad, dark- brown bands, showing clearly within the 

 aperture; spirally regularly striated, below the slight subangulation 



