TIAUA. 31 



50. Tiara (Acrostoma) hiigeli (PhUippi). 



Tiara {Acrostoma) h'wjeli (Philippi), Abbild. X. Couch, i, p. 61, 



Melanin, pi. '2, fig. 8. 

 Melania siphonnta, Reeve, Conch. Icon. pi. 20, sp. 143 ; II. Si T., 



C. I. pi. 71, tigs. 5, (} ; Nevill, Hand List, pt. 2, p. 270. 



Original description : — Testa oblongo-conica, obscure fusca ; 

 aufractibus plauiusciilis, transversim striatis ; ultimo venti'icoso, 

 basi grosse sulcato ; apertura ovata, anfractus 3 antecedentes 

 sinnil sumptos aequaute, basi manifeste eff usa ; columella arcuata. 



Alt. 33, (liain. lU'o mm. 



Hab. Khasi Hills; Mysore ; Upper Canvery River (Blanford). 



Var. compacta, XeviU, Hand List, pt. 2, p. 270. 



" Easily distinguished by its short, stout form, relatively con- 

 tracted aperture, less tumidly swollen, but more subangulate last 

 whorl, and closer spiral sculpture ; the spire is more truucate, the 

 coloration darker." 



Alt. 25"5, diam. 13'75 mm. 



Hub. Wynaad [type var.] and Cochin lliWa (Beddome) ; Canvery 

 River (Jerdon). 



51. Tiara (Acrostoma) assamenis, Nevill. 



Tiara (Acrostoma) assamansis, Nevill, Hand List, pt. 2, p. 271; 

 Ilanley, Conch. Misc. pi. o, fig. 43, as " M. hiUjeli, var. of Philippi, 

 from Khasya." 



Original description : — Remarkably close to Mel. h'wjeli, from 

 which it can be distinguished by its less solid substance, its much 

 more couvexly rounded whorls, the last not being (more or less) 

 subangulate as in its ally ; o£ a plain, uniform, dark colouration ; 

 of similar minute striatiou, but wanting the spiral sulcations at 

 base of last whorl ; characters of the columellar margin and 

 aperture generally nnieh as iu typical J/, h'df/di, strongly decollate, 

 three whorls only remaining. 



Alt. 35, diam. 18'5 mm. 



Bab. North Cachar (God win- Austen) ; " Delaima " ? {Nevill). 



52. Tiara (? Acrostoma) praemordica {Tryon). 



Tiara (? Acrostovia) preemordica (Trvon), Amer. J. Conch, ii, pt. 2, 

 1866,1). Ill, pi. 10, tig. 3 ; Brot. iu Conoh.-Cab. 1875, p. 108, pi. 13, 

 figs. 8, 8 rt ; 11. & T., C. I. pi. 153, tig. 2. 



Original description :— Shell ovately conical, robust, covered with 

 regular, close, curved growth lines, and with rounded revolving 

 ribs, of which seven are on the body-whorl ; spire conical elevated, 

 (? eroded), suture deeply impressed; whorla convex, surface 



