TIAKA. 



27 



Var. iravadica (Blanford), P. Z. S. 1869, p. 445 ; H. & T., C. I. 

 pi. 71, iig. 1 ; Nevill, Haud List, pt. 2, p. 262. 



Original description : — Testa elongato-turrita, tenuis, fusco- 

 olivacea, decollata. Anfr. circa 7, i)rimi erosi, 3-4 superstites 

 convex!, superi seriebus duabus spiralibiis nodorum coiit'ertorum 

 circumdati, ultinius si)iraliter liratus, iiodis fere vel omnino 

 obsoletis. Apertura i-bomboideo-ovata, aiitice subeffusa ; peri- 

 stoma tenue, margine externo subrecto, basali antice porrecto, 

 colutuellari sinuato. Operc. ? 



Lengtb (of a large decollated specimen) 25, diani. 15 nun. 



Aperture taken obliquely : lengtli 13, diam. 8 mm. 



Total length (of a medium-sized example, also decollated) 13, 

 of the last whorl 11, largest diameter 14. smallest 12-5 mm. 



Aperture taken obliquely and including the labrum : length 13, 

 diam. 8'5 mm. 



Hah. Irawady Eiver above INIalo and Bhamo ; Manwyne and 

 Taylaymaw. 



43. Tiara (Melanoides) terebra (Benson). 



Tiara {Melanoides) terebra (Benson), J. A. S. IJ. v, 1836, p. 747 ; 



Reeve, Couch. Icon, pi. 11, sp. 59. 

 31elaiwides forqnata, Buscli. in Pbilippi, Ab. N. Conch. 1, Melama, 



pi. 1, fig. 18 : Nevill, Hand List, pt. 2, p. 1'64. 



Original descrij^tion -.—Testa elongato-turrita, olivaceo-brunuea, 

 l^evi, polita ; anfractibus tumidis ; suturis excavatis ; sinu inter 

 basin labri columellamque nullo. . . . Testa truncata. 



Alt. 41 mm. 



Bab. North-East Frontier of Bengal ; Sylhet. 



Benson remarks : " It is distinguished from the young of the 

 smooth variety of J/, variabilis by the want of angularity at the 

 centre of the lower whorl, by its polished epidermis, more tumid 

 whorls and more deeply sunk sutures, as well as by the absence of 

 the sinuation of the inner lip which characterizes that species. 

 The apex of the shell is more or less truncated." 



44. Tiara (Melanoides) spinata (Godwin-Austen). 



Tiara {MeUmoides) spinata (Godwin-Austen), P. Z. 8. 1872, p. 514, 

 pi. 30, fig. 1 (as Melanoides) : Brot, in Conch. -Cab. 1875, p. 89, 

 pi. 10, figs. 2, 2 a : H. & T., C. I. pi. 109, tig. 1. 



Original description : — Shell angularly turreted ; colour olive- 

 green ; spire acute, rather rapidly decreasing in diameter ; apex 

 eroded ; suture marked by a distinct cord continuous with tbat 

 on the lower angle of the last whorl ; whorls 5-6 (there would be 

 8 if perfect), very convex and flattened on the periphery, with 

 strong tubercles arranged in two parallel longitudinal rows, the 

 spines being rather longer on the upper : aperture ovate, vertical, 



