1887.] mollusks of the viti islands. 1/9 



3. Patula princei. 



Helix princei, Liardet, Proc. Zool. Soc. 1876, p. 100, pi. 5. 

 figs. 4, Aa. 



This species was found at Taviuni by Mr. Liardet, 

 " Shell very small, depressed, with a wide and perspective um- 

 bilicus ; colour dark brown; whorls 3, prominentl}' costulated ; 

 suture deeply impressed ; aperture round." (Liardet.) 



4. Patula irregularis, sp. nov. 



Pitys irregularis, Mousson, Mus. Godeff. 188.5. 



Shell small, umbilicated, orbicular, depressed, thin, translucent, 

 greyi:.h wliite under a bluish horn-coloured epidermis ; sculpture 

 consisting of crowded, waved, raised strife, with larger ones irregularly 

 intermixed ; spire convex, apex flattened ; suture canaliculate ; 

 whorls 4, convex, slowly and regularly increasing, slightly turgid 

 next the suture, last one rounded, slightly depressed above tlie 

 periphery ; base convex ; umbilicus deep, about one fourth the 

 major diameter of the shell ; aperture slightly oblique, irregularly 

 rounded ; peristome thin. 



Major diam. 3, height 2 millim. 



Common at Viti Levu. I received a number of specimens of 

 this species from the Museum Godeffroy, Hamburg. 



A small uucoloured species closely allied (o P. rudis, a Cook's 

 Island species. The irregular striae will separate it from the other 

 Vitian species. 



Genus Pitys, Beck. 

 1. Pitys subd^dalea. 



Patula {Endodonta) subdcedalea, Mousson, Jouru. de Conch. 1870 

 p. 117, pi. 7. fig. 6. 



Helix subdcedalea, Pfeiff'er, Mun. Hel. vii. p. 258 ; {Patula) 

 Paetel, Cat. Conch, p. 95. 



Found by Dr. Graffe in Mango Island. Like all the South-Sea 

 species, it is found beneath decaying leaves and under rotten wood. 



It is a little larger than Patula adjwsita, and of a pale horn- 

 colour, with a wide umbilicus, planulate spire, the strise costulate, 

 and 5g whorls. The parietal region is garnished with three spiral 

 laminae, and there are four on the palate. 



Genus Placostylus, Beck. 



I. Placostylus malleatus. 



Bulimus malleatus. Jay, Revue Zool. 1842, p. 80 ; Guerin, Mag. 

 Zool. 1843, p. 61 ; Philippi, Abbild. ii. 9. p. 10, Bui. pi. 3. fig. 4 ; 

 Pfeiffer, Mon. Hel. ii. p. 55 ; {Charts) id. Vers, p. 1 52 ; Reeve, Conch. 

 Icon. pi. 29. fig. 174 ; Deshayes, in Fer. p. 47, pi. 144. figs. 11, 12; 

 Gould, Expl. Exp., Shells, p. 81, fig. 78; (Ckaris) Albers, Die Hel. 

 1st ed. p. 152, 2nd, ed. p. 196 ; {Charis) H. & A. Adams, Gen. 

 Moll. ii. p. 147 ; {Charis) Cheim, Mon. Conch, i. p. 436, fig. 3201 ; 



