38 LIEUT. -COL. H. H. GODWIN-AUSTEN ON [Jan. 6, 



Nanina infans, v. Martens, Preuss. Exped. Ost-Asieu, Land- 

 schneck. p. 243 (1867). 



Helix adnata, Mousson in coll. 



Six specimens in Dr. Hungerford's collection. 



The type of this species is iu the British Museum, represented by 

 three shells ; the largest, I observed, was of another species, and in 

 this Mr. Edgar Smith concurred. On referring to the original descrip- 

 tion, the dimensions recorded are those of the second sized specimen, 

 and with this Dr. Hungerfurd's examples agree. The shell removed 

 is evidently a young specimen of ^. jucunda or an allied form. 



MiCROCYSTiNA ST. JOHNi, n. sp. (Plate IV. figs. 3, 3 a.) 



Shell depressedly conoid, glassy, narrowly umbilicated, flat 

 below ; sculpture under high power shows minute close longitudinal 

 striae ; colour dark chestnut-brown ; spire low ; apex flattened ; 

 suture shallow, adpressed ; whorls 5, very flat above ; aperture 

 narrowly lunate ; columellar margin rather strong, with a spiral 

 twist. 



Size : maj. diam. 40, min. S'o ; alt. axis l-2.i millim. 



Rab. Busan Hills. 



I name this species after Mr. St. John, who was one of Rajah 

 Brooke's officers. 



MiCROCYSTiNA PUDENS, U. Sp. 



Shell depressedly globose, rather flat below, imperforate ; sculp- 

 ture, most minute regular longitudinal striae under lens, smooth and 

 glassy to the eye ; colour dark sienna-brown ; spire flatly conic ; 

 apex rounded ; suture very shallow ; whorls 4, very flat, regularly 

 increasing ; aperture narrowly ovate ; peristome thin, thickening 

 near the oblique columellar margin, it has here a spiral or twisted 

 form. 



Size : maj. diam. 4'2, min. 3*9 ; alt. axis 2'2 millim. 



Hab. Busan Hills {A. Everett^. 



It is exceedingly interesting to find this subgenus of Morch, 

 hitherto only known from the Andamans, where several species 

 occur, ranging so far to the eastward, and it will no doubt turn up 

 sooner or later in some of the intermediate islands. 



MiCROCYSTiNA SECLUSA, n. Sp. 



Shell globosely conical, shiny, rounded below, imperforate ; 

 sculpture, conceniric regular parallel striae, very fine ; colour sienna- 

 brown ; spire high, side flat ; apex bluntly rounded ; suture im- 

 pressed ; whorls 5, sides, particularly of the last, very convex ; aperture 

 lunate ; peristome acute, thin ; columellar margin nearly vertical, 

 thickened. 



Size : maj. diam. 3'8 ; alt. axis 2*4 miUim. 



Hab. Borneo, cave-earth. 



Only two specimens of this species were found, and these I picked 

 out of the cave-earth sent home by Mr. Everett to Mr. John Evans 

 some years ago ; it has not yet been found living. 



