GASTROPTYCHIA. 349 



" . . . , This is a very beautiful iieAV species, the only shell 

 approaching; it that I know from this region being D. angulata of 

 Moulinain." ( Godwin- Austen.) 



Genus GASTROPTYCHIA, Kohelt cf- mihndorff. 



PaxUlus, Adams, A.M.X.II. scr. 2. vii, \^')\, p. 63 (as subgenus ot 

 Dijjlommatina), (non Paxiilus, ]MacLeay, 1819) : Pfeiffer, INIon. 

 Ilelic. iii, ISo."), p. 585 (genus) ; Adams, Gen. Rec. Moll, ii, ]85(), 

 p. 288 (subgenus); Pfeiffer, Mon. Pneum. Suppl. 1, 1858, p. 1-1 ; 

 Chenu, Man. Conchyl. i, part 2, 18()0, p. 490 (subgenus) ; 

 Pfeiffer, Mon. Pneum. Suppl. 2,1805, p. 12 (geuiisj ; Martens, 

 Preuss. Exp. Ost-Asien, Zool. ii, 1807, p. 1G4 (genus); Stoliczka, 

 J. A. S. B. xl. part 2, 1871, p. 157 ; Issel, Ann. Mus. Civ. Geneva, 

 vi, 1874, p. 440 (genus) ; Fisclier, Man. Conclivl. 1885, p. 740 

 (section); Heude, Mem. Hist. Nat. Emp. Chin." i, 1890, p. 131 

 (genus) ; Mullendorft', Naclir. Deuts. Malak. Ges. xxiv, 1892, 

 p. 20 (genus) : Kobelt & Mollendorff, op. cit. xxx, 1898, p. 142 

 (geuusi ; id.. Cat. Pneum. 1899, p. 02 (genus). 



G(istro/)ti/chia, Kobelt & Mollendorff, Nachr. Deuts. Malak. Ges. 

 xxxii,'l900, p. 186 ; Kobelt, Das Tierreicb, Lief. 10, 1902, p. 481. 



Type, P. adversus, Adams. 



Eange. India, China, Borneo, Xatuna Is., Philippines. 



Shell pupajforni, riniate, generally sinistral; spire acuminate; 

 aperture semi-ovate, ascending on the body-whorl ; inner lip 

 adnate, spreading, tiexuous ; columella with a single, prominent, 

 tooth-like plait ; two or more palatal folds ; outer lip with a 

 double peristome, emarginate anteriorly ; umbilical region with 

 a spiral, elevated ridge, terminating in a notch at the fore part 

 of the aperture. Operculum almost circular, thin, with few, 

 indistinct whorls and a somewhat excentric luicleus. 



540. Gastroptychia insignis, Godivin-Avsten. 



iJiplonDHiitina insif/7its, (iodwin-Austen, J. A.S.B. xxxix, part 2, 

 1870, p. 0, pi. 2,' tig. 1; Ilanley & Theobald, Conch. Ind. 1875, 

 pi. Uiy, tig. 10; Pfeiffer, Mon. Pneum. Suppl. 3, 1875, p. 79; 

 Theobald, Cat. Shells Brit. India, 1870, p. 42; Nevill, Hand 

 List, i, 1878, p. 280; Godwin-Austen, Land Sc Freshw. Moll. 

 India, i, 1880, p. 108, pi. 50, tios. 3, 5, 0, 9. 



Pa.iillus insiffnis, Kobelt it Mollendorff", Nachr. Deuts. Malak. Ges. 

 xxx, 1898, p. 142 : id., Cat. Pneum. 1899, p. 02. 



Gastroptychia insiynis, Kobelt, Das Tierreich, Lief. 10, 1902, p. 482. 



Original description : — "Shell sinistral, acuminatel)' oval, colour 

 corneous or pink, costulation close and strong on the upper 

 whorls, obsolete on the two last ; spire rather pointed. Wliorls 8, 

 lower rounded, at apex flat-sided; penultimate the largest, the 

 constriction of this last situated in fi-ont and covered by the 

 parietal callus ; suture impressed, aperture vertical, oval ; peri- 

 stome double, outer much thickened, inner continuous, callus 

 strong; columellar inargin rounded, tlie tooth-like process 

 moderate. 



