TIAKA. 2 1 



with bands of red-brown dots or irregular longitudinal streaks of 

 the same colour, sometimes altogether devoid of markings. 



" This shell occurs alive in the Gumti, Yamuna, Betwa, and 

 Cen rivers. I have met with the exuviae in the Ganges. In this 

 .... species the foot is of a pullid colour with brownish black 

 markings. The body is light verdigris-green." 



Alt. 29*75, diam. maj. 8'75 mm. 



Aperture : alt. 8'5, diam. 4 mm. 



The above dimensions are taken from a specimen in the British 

 Museum, none being given in the original description. 



Subgenus MELANOIDES. 



Melanoidss, H. & A. Adams, Gen. Rec. Moll. 1854, i, p. 296 ; Nevill, 

 Hand List, pt. 2, p. 248. 



TYPE, Melania asperata, Lamarck ; Philippines. 



Range. S. and E. Asia ; Japan ; Malaysia. 



Shell subulate, solid ; whorls often nodulous or rugose ; aperture 

 subcircular, produced in front; inner lip somewhat callous; 

 outer lip sinuated, thickened, dilated and produced anteriorly. 

 Operculum subcircular, stibspiral, of few rapidly-enlarging whorls. 



36. Tiara (Melanoides) herculea (Gould). 



Tiara (Melanoides) herculea (Gould), Proc. Boston Soc. Nat. Hist. 

 1846, ii, p. 100 ; Otia Conch, p. 199 ; H. & T., C. I. pi. 72, tig. 5. 



Original description : Testa ponderosa, elongato-conica, fusco- 

 viridis, decollate : anfr., numero integro ad 15, superstitibus 2-5, 

 planulatis, infra suturam constrictis, plicis profundis 4-nodosis 

 longitudinalibus ; ultimo subcarinato, basi striis crassis cincto ; 

 apertura subrhomboidali ; antice producta, callo columellari rotun- 

 dato, crasso, fauce plus minusve fusco. 



Alt. 71*5, diam. 25*5 mm. 



Hob. Tavoy River. 



37. Tiara (Melanoides) gloriosa (Anthony). 



Tiara (Melanoides) gloriosa (Anthony), Amer. Journ. Conch, i, 

 1865, pt. 3, p. 207, pi. 18, fig. 2 j H. & T., C. I. pi. 72, figs. 1, 2. 



Original description : Shell ovate-conic, smooth, olivaceous ; 

 spire elevated, but abruptly decollate, exhibiting only four whorls, 

 which are convex and quite broad ; sutures very deep and dis- 

 tinct ; lines of growth remarkably prominent, often amounting to 

 varices, and with revolving striae less prominent, but, nevertheless, 

 distinct, decussating with them; aperture large, ovate, blotched 

 with reddish-brown within; columella very much curved, thickened 



