HELICINA. 367 



Aphanoconia andamnnica, Wa<j-ner, DenLs. Kaiserl. Akad. Wiss. 

 Wien, Ixxvii, 1905, p. 400, pi. (!, fi}is. 11 «-! 1 c ; id.. Conch.-Cab., 

 Il.'liciiiidac, 1908, p. 177, pi. o4, figs. 11-13; P.ourue, Troc. 

 Zool. Soc. 1911, pi. 41, fig. 63 (radula). 



Orif/inal description : — " Tesfa sublenticular!, solidiuscula, striig 

 confertissiinis sub lente decussata, ruf^is spiralibus obsoletis, subtus 

 magi.s oonspicuis, uuuiita, albida, superfieie citriua, linea peripbenca 

 rubeute suturani sequente ornata ; spira convexo-conoidea, apice 

 obsolete niucronato, sutura liueari, inargiiiata ; anfr. 4} plaiiulatis, 

 ultimo acute comi)res.so-eariuato, subtus convexiusculo ; apertura 

 obliqua, trianoulari, albidn, peristoniate acuto, expansiusculo, 

 maro-inecoluniellari brevi, sinuato, callum subcirculareni eniittente, 

 calli^basi elevatiore, versus marginein apertura) obtuse angulata. 

 Operculo tenui, albido, medio obsolete grauulato, intus lutesceute. 



"Diam, maj. 9, minor 7|, axis 5 mill." (Betison.) 



Hah. Andaman Is. {Theobald). 



Allied to //. nicobarica, Pbilippi, but larger. 



566. Helicina arakanensis, Blanford. 



Helicina arakmienm, l^Ianford, J. A.S.B. xxxiv, 1805, p. 85; 



Ilanley Sc Tlieobald, Concii. lud. lJ<70, pi. 6, fig. 9; Tlieobald, 



Cat. Shells Brit, ludia, 1876, p. 43; Pfeiffer, Mon. Pneuni. 



Suppl. 3, 1870, p. 283 ; Nevill, Hand List, i, 1878, p. 325^ _ 

 Aphanoconia mergidensis arncanensi.s, Waguer, Deuks. Kaiserl. 



Akad. Wiss. Wieii, Ixxvii, 1905, p. 402, pi. 6, figs. 7 a, 7 b. 



Original description : — " Sbell depressly turbinate, sublenticular, 

 ratlier thin, obliquely striated above, radiately and very minutely 

 beneath, poUshed, flesh-coloured, with a darker red band in the 

 centre of the whorls above, and another on the last whorl, just 

 below the periphery ; apex yellow. Spire convexly conoid ; apex 

 acute. Whorls 4, the last compressed and sharply keeled, 

 moderately convex at the base, furnished with a polished sub- 

 granulate "central callus ; columella very short. Aperture diagonal, 

 triangular; peristome white, slightly expanded. Operculum 

 light grey, shelly, 



" Major diameter 0, minor 5, axis 3^ millem.'' {Blanford.) 



Hah. Burma: Ramri Island, Coast of Arakan. 



A smaller variety, measuring— major diameter 5. minor 41, axis 

 3 millim., is mentioned as being abundant in the soutliern portion 

 of tlie Bassein District. 



Stated to be related to H. mercjxiiensis, Pfr., and //. andamanica, 

 Bens., but smaller than either, mainly distinguished from the 

 former bv the absence of the close spiral striation, so marked in 

 that species, and from the latter by different colouring, higher 

 spire, and closer sculpture, 



AVliile merging this species as a subspecies of //. merr/uiensis in 

 1905, Dr. AVagner subsequently reduced it to a s}iionyiu of 

 //. nicobarica *. 



* Concb.-Cab., Helicinidae, 1908, p. 176. 



