338 LIEUT.-COL. H. H. GODWIN-AUSTEN ON [JuilC 18, 



Lagocheiltjs, Blanf. 



Although the notch at the sutural margin of the peristome is 

 very small and less apparent than in the typical Indian species, yet 

 it is there, and in all characters agrees with the genus Lagocheilus 

 as described by W. T. Blanford. 



(\f^, 11' Lagocheilus dido, n. sp. (Plate XXXIX. fig. 5.) 



Shell turbinate, rather thin, umbilicated narrowly ; sculpture 

 covered with a stony epidermis, smooth, with a distinct rib on the 

 periphery, extending on to the penultimate whorl ; colour amber- 

 brown ; spire high, sides flat; apex pointed; suture impressed; 

 whorls 6, moderately convex, the last subaugulate, and angulate 

 below round the umbiHcus ; aperture circular, subvertical ; peri- 

 stome double, with a slight sutural notch, the outer lip slightly 

 expanded and reflected at right angles. 



Size: maj. diam. lO'O; alt. axis 7"0 ; diam. apart. 5"5 millim. 



Operculum not preserved in the only two specimens before me. 



Hab. Niali Hills {A. Everett). 



I have named this shell after H.M.S. 'Dido,' the officers and 

 crew of which, on the first occupation of Sarawak by Rajah Brooke, 

 did good service in the suppression of the pirates who then infested 

 those waters. 



/fl^.^., 12. Lagocheilus keppeli, n, sp. (Plate XXXIX. fig. 4.) 



Shell globosely turbinate, rather solid, translucent, closely umbili- 

 cated ; sculpture a thick epidermis set with very fine short hairs, 



5 or 6 delicate longitudinal hrate ribs, crossed by regular diagonal 

 raised striae ; colour dull ochraceous ochre, apex dark ; spire high, 

 sides flat ; apex fine ; suture moderately impressed ; whorls 5g, 

 rounded ; aperture circular, nearly vertical ; peristome double, inner 

 continues simple, with a very minute notch showing within the 

 aperture ; columellar margin rounded, the outer lip slightly re- 

 flected. 



Size: niaj. diam. 8"25, min. 6v5 ; alt. axis 6*0 millim. 



Operculum thin, flat, transparent, spiral of about 8 turns. 



Hab. Niah Hills {A. Everett). 



This shell is named after Captain the Honourable Henry Keppel, 

 of the 'Dido,' whose name occurs often in the early history of 

 Sarawak and that part of Borneo. 



/>.. ''^'^'13. Lagocheilus mundyanus, n. sp. (Plate XXXIX. figs. 6, 



6 a, 6 6.) 



Shell dextral, moderately solid, conical, closely umbilicated ; 

 sculpture very minute transverse striae, with at distant intervals a 

 fine costulate rib, very conspicuous in the very young shells, 

 becoming obliterated with age ; four fine spiral lirse ornament the 

 last whorl, with one below the periphery, very minute short hairs 

 are given ofP from the points of intersection of the lirate bands and 

 the transverse rib, but these are lost as the shell grows older; 

 colour pale olivaceous, crossed by transverse bands of dark liver- 



