368 HELTCINID^. 



567. Helicina dunkeri, Zelehor. 



Hehcina diinlccri, Zelebor, Verb. K. K. zool.-bot. Ges. xvii, 1867, 



p. 808; Pfeiifer, Mon. Pneum. Suppl. 3, 1876, p. 285; id., 



Malak. Blatt. xxiv, 1877, p. 156 ; Nevill, Hand List, i, 1878, 



p. 324. 

 Pdchi/stoma chinkcri, Fraueufeld, Verb. K. K. zool.-bot. Ges. xix, 



1869, p. 879 ; Morcb, Jsurn. Coucbyl. xx, 1872, p. 331. 

 Helicina (Pachystojna) dunheri, Morcb, Journ. Coiicb}'!. xxiv, 



1876, pp. 363, 366. 

 Aplianoconia dunkeri, Wagner, Denks. Kaiserl. Akad. Wiss. AVien, 



Ixxvii, 1905, p. 407, pi. 6, lig-s. 12a-12c; id.,' Concb.-Cab., 



Helicinidae, 1908, p. 179, pi. 34, figs. 14-19. 



On</inal description : — " T. sublenticularis, carinata, solida, 

 confertissiniecapill:iceo-striata,sericea, carnea,satui-atiiis Aariegata ; 

 spira breviter conoidea, vevtice minuto ; sutura levis, raargiuata ; 

 aiifr. 4^ planiusculi, ultimus acute compresso-carinatus, basi 

 convexiusculas, levins striatus, medio oallo crasso, albido,siibcircuni- 

 scripto munitus ; apertura diagonalis, triangularis, ad carinam 

 subcanaliculata ; perist. simplex, margine dextro anguste expanso, 

 ba&ali reflexiusculo, cum columella brevissima, callosa angulum 

 distinctum formaute. — Operculum soliduni, margaritaceum. 



"Diam. maj. 10, miu. 9, alt. 5 mm." (Zelebor,) 



Hah. Nicobar Is. : Camorta and Preparis (StoliczJca). 



Stated to be nearest to H. rosaUn', a Pliilippine species, but 

 uuicb larger, sinning, tbe carina less pronounced, tlie jjeristome a 

 little more expanded, while there is no fold at the base of the 

 columella. 



568. Helicina gratulata, Soverhy. 



Helicina yrntulata (Blanford), Sowerby, Thes. Conch, iii, 1866, 

 p. 29.5, pi. 278, fig. 457; Reeve, Conch. Icon, xix, 1873, 

 Helicina, pi. 11, fig. 96. 



"Hel. testa trochiforme, straminea, spira subacuminata, anfracti- 

 bus convexiusculis ; ultimo aufractu subcompresso, medio acute 

 carinato, supra infraque convexo, columella teuui, obliqua, labio 

 externo tenuissimo. 



"Sliell trocliiform, straw coloured, spire subacuminated, whorls 

 rather convex ; last wliorl rather compressed, acutely keeled in 

 the middle, convex above and below, columella thin, obliijue ; 

 outer lip very thin." {lieeve.) 



Diain. maj. 8-5, alt. 7 mm. (ex icon.). 



Hah. Burma : Pegu. 



569. Helicina merguiensis, Pfeifer. 



Helicina merr/uiensis, Pfeiffer, Proc. Zool. Soc. 18.57, p. Ill; 



id., JNron. Pneum. Suppl. 1, 18.")8, p. 216 ; Theobald, Cat. Shells 



Brit. India, 1876, p. 43. 

 Aphanoconia mercpiiensis, Wagner, Denks. Kaiserl. Akad. Wiss. 



Wien, Ixxvii, 1905, p. 401, pi. 6, figs. Q> a-Q e ; Bourne, Proc. 



Zoo]. Soc. 1911, pi. 35, fig. -27 (anatomy), pi. 42, fig. 64 (radula). 



Original description : — " T. depresse turbinata, tenuiuscula, 

 oblique striata et spiraliter confertissime sulcata, nitidula, carnea ; 



