TIABA. 27 



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



pi. 71, fig. 1 ; JSTevill, Hand List, pt. 2, p. 262. 



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

 olivacea, decollata. Anfr. circa 7, primi erosi, 3-4 superstites 

 convexi, superi seriebus duabus spiral ibus nodorum confertorum 

 circuindati, ultimus spiraliter liratus, nodis fere vel omnino 

 obsoletis. Apertura rhomboideo-ovata, antice subeffusa ; peri- 

 stoma tenue, margine externo subrecto, basali antice porrecto, 

 columellari sinuate. Operc. ? 



Length (of a large decollated specimen) 25, diam. 15 mm. 



Aperture taken obliquely: length 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. 



Hob. Irawady Eiver above Male and Bhamo ; Manwyne and 

 Taylaymaw. 



43. Tiara (Melanoides) terebra (Benson). 



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



Beeve, Conch. Icon. pi. 11, sp. 59. 

 Melanoides torqiiata, Busch, in Philippi, Ab. N. Conch, i, Melania, 



pi. 1, fig. 18 j Nevill, Hand List, pt. 2, p. 264. 



Original description : Testa elongato-turrita, olivaceo-brunuea, 

 Ia3vi, polita ; anfractibus tumidis ; suturis excavatis ; sinu inter 

 basin labri columellamque nullo. . . . Testa truncata. 



Alt. 41 mm. 



Hob. North-East Frontier of Bengal ; Sylhet. 



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

 smooth variety of M. 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 (Melanoides) spinata (Godwin-Austen), P. Z, S. 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, fig. 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 that 

 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, 



