TIAKA. 15 



tlie body-whorl eiieiivlt-d by an ini'ra-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 ram. 



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



Hah. Andaman Islands. 



The shoulder formed by the infra-sutural rid^e presents a some- 

 what striking appearance and recalls some of the Western Pacific 

 Island forms in which this character occurs ; the other chai-acters, 

 however, when taken collectively or singly, easily se[)arate it from 

 any of the species described from those regions. 



27. Tiara (Radina) multistriata (Preston). 



Tiara {Radina) midtistriata (Preston), Rec. Ind. :Mus. ii, p. 190, 

 p]. 15, HJ,^ 24. 



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

 rather flat, sculptured throughout with fine transverse strite and 

 coarser spiral striaj ; sutures deep and incised; coUunella arched ; 

 peristome acute ; aperture ovate; interior bluish grey. 



Alt. 26, diam. maj. 10 mm. 



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



hah. Audamau Islands. 



Subgenus STRIATELLA. 

 Striatella, Bret, Conch. Cab. 1875, pp. 7, i9;J. 



Types, Melanin corporosa, Gould, Tahiti ; and MeJania tuhercu- 

 latu, 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 rotuii- 

 tlata, columella modice torta. 



Testa longitudinaliter inciso-striata, sutura canaliculata. 



(Typ. M. corporosa.) 



Testa longitudinaliter elevato-lirata : ruliropunctata vel flam- 

 mulata. 



(Typ. M. tuhercvlatn.) 



28. Tiara (Striatella) tuberculata (Mulhr). 



Xerifa tuberculata, Miiller, Hist. Vern). 1774 (as Xeritn), Coro- 

 niaudel ; H. & T., C. I. pi. 74, tigs. 1-4 ; Xevill, Hand List, pt. 2, 

 p. 239. o , , , F , 



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

 with raised spiral stria? and undulating grooves, blotched with 

 blood-red, these red markings often forming zigzag bands. A\'horls 

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



