TIA.RA. 15 



the body- whorl encircled by an infra-sutural ridge forming a 

 distinct shoulder and weakly spirally lirate throughout below the 

 ridge; sutures impressed; peristome simple ; columella arched, a 

 callus joining it with the lip above ; aperture inversely auriform. 



Alt. 33-25, diam. maj. 12-25 mm. 



Aperture, alt. 10-5, diam. 5-5 mm. 



Hob. Andaman Islands. 



The shoulder formed by the infra-sutural ridre presents a some- 

 what striking appearance and recalls some of the Western Pacific 

 Island forms in which this character occurs ; the other characters, 

 however, when taken collectively or singly, easily separate it from 

 any of the species described from those regions. 



27. Tiara (Radina) multistriata (Preston}. 



Tiara (Radind) multistriata (Preston), Rec. Ind. Mus. ii, p. 196, 

 pi. 15, fig. 24. 



Shell decollate, subulate, dark olive-brown ; remaining whorls 4, 

 rather flat, sculptured throughout with fine transverse striae and 

 coarser spiral striae ; sutures deep and incised ; columella arched ; 

 peristome acute ; aperture ovate; interior bluish grey. 



Alt. 26, diam. maj. 10 ram. 



Aperture, alt. 9'5, diam. 4 mm. 



flab. Andaman Islands. 



Subgenus STRIATELLA. 



Striatella, Brot, Conch. Cab. 1875, pp. 7, 193. 



TYPES, Melania corporosa, Gould, Tahiti ; and Melania tubercu- 

 lata, Miiller, N. Africa, S. & E. Asia, Malaysia, N. Australia. 



Range. Add to the above S. & E. Africa and Tropical Islands of 

 the Indian and Pacific Oceans. 



Original description: Testa turrita, mediocris, longitudinaliter 

 plus minusve striata, saepe transverse plicata ; apertura basi rotun- 

 data, columella modice torta. 



Testa longitudinaliter inciso-striata, sutura canaliculata. 



(Typ. M. corporosa.} 



Testa longitudinaliter elevato-lirata ; rubropunctata vel flam- 

 mulata. 



(Typ. M. tuberculata.} 



28. Tiara (Striatella) tuberculata (Mullir). 



Nerita tuberculata, Miiller, Hist, Verm. 1774 (as Nerita), Coro- 

 mandel ; H. & T., C. I. pi. 74, figs. 1-4 ; Nevill, Hand List, pt. 2, 

 p. 239. 



Shell elongate, very acuminate or subulate, pale, thin, sculptured 

 with raised spiral striae and undulating grooves, blotched with 

 blood-red, these red markings often forming zigzag bands. Whorls 

 8 or 9, ornamented with longitudinal tubercular ridges, each bearing 



