32 TIARIDjE. 



formed into a succession of planes by the revolving ribs ; aperture 

 ovate, a little broadly effused below; the ribs form slight sulcations 

 within the aperture. Reddish brovvu, sometimes dark greenish- 

 brown ; internally white or light yellowish, the sulcations deep 

 brown. 



Alt. (eroded) 30, diam. 22 mm. 



Hob. Burma. 



53. Tiara (Acrostoma) pagodula (Gould). 



Tiara (Acrostoma) pagodula (Gould), Proc. Boston Soc. Nat. Hist. 

 1847, ii, p. 219 ; Otia Conch, p. 200 ; Reeve, Conch. Icon., lo, fig. 

 10 (as lo), H. & T., C. I. pi. 153. fig. 3. 



Original description : Testa crassa sub-rhombea, turrita, 

 tenuiter striata, fusco-castanea, decollata ; spira elevata, conica ; 

 anfr. 4 angulatis, angulo spinis 6 robustis armato ; ultimo autice 

 sub-rostrato, et costulis ad 4 cincto ; apertura ovata, antrorsum 

 producta, fauce cserulescente, fusco-maculato. 



Alt. 38, diam. 22-5 mm. 



Bab. Thoungyin River, a branch of the Salwin. 



Subgenus MELANELLA. 



Melanella, Swainson, 1840, Treat. Malac. p. 341 : Nevill, Hand List, 

 pt. 2, p. 271. 



TYPE, Melania Jiolandri, Fe'russac ; Austria-Hungary. 



Range. S.E. Europe ; S. & E. Asia ; Malaysia. 



Original desertion : Obovate ; spire scarcely longer than the 

 aperture, which is entire ; inner lip much thickened its whole 

 extent. 



54. Tiara (Melanella) zonata (Benson). 



Tiara (Melanella) zonata (Benson), J. A. S. B. v, 1836, p. 747 ; 

 Philippi, Abbild. N. Conch, i, Melania,pl. 1, fig. 12; Reeve Conch. 

 Icon. pi. 31, sp. 217 ; H. <fc T., C. I. pi. 71, fig. 4 ; Nevill, Hand 

 List, pt. 2, p. 272. 



Original description : Testa ovato-conica-laevi, longitudinaliter 

 striata, olivacea, zonis tribus brunneis fasciata, anfractibus leviter 

 convexis, suturis minime profundis ; apertura albida, ovato-oblonga, 

 infra subangulata. 



Alt. 21-25 mm. 



Hal. North-East Frontier of Bengal ; Sylhet. 



55. Tiara (Melanella) riqueti (Grateloup). 



Tiara (Melanella) riqueti (Grateloup), Trans. Lin. Bordeaux, xi, pi. 5, 

 fig. 28 ; II. & T., C. I. pi. 71, fig. 10 ; Brot, in Conch.-Cab, 1877, 

 p. 333, pi. 34, figs. 6, 6 a. 



