Mascarene Land-Mollusca. 435 



Animal (PL X. fig. 3 Z») ovoviviparous ; one shell con- 

 tained three immature ones. Sole of foot narrow elongate, 

 with a peripodial margin, probably a mucous gland. It is 

 somewhat similar in its form to L. insulaj'is, but I failed to 

 see the mucous gland ; it no doubt possesses that organ, the 

 radula and eye-tentacles being of similar type. 



The radula (Hg. 3 c) has the formula 25 . 8 . 1 . 8 . 25, or 

 33 . 1 . 33, 



The central tooth and adniedians are similar on broad 

 plates, with a long central point rising well above basal 

 cusps on either side ; the transition-teeth have one outside 

 cusp, and the laterals are curved and tricuspid. The jaw 

 (fig. 3 c) is high, rounded above, and with a central projection 

 ou the cutting-edge, which is slightly concave. 



Kaliella foiirneauxensis, sp. n. (PI. X. figs. 4, 4 «.) 



Locality. Island of Fourneaux, S.W. of Mauritius (Dupont), 

 15. v. 07. 



Shell (fig, 4) pyramidal, very narrowly perforate ; sculp- 

 ture irregular transverse striation, finer and more regular on 

 the apical whorls ; colour pale ashy ; spire nearly as high as 

 diameter of base ; suture shallow, marked by a fine lirate 

 line ; whorls 6, slightly convex, the last carinate and lirate ; 

 aperture semicircular ; peristome thin, columellar margin 

 slightly reflected. 



Size : major diam. 3*25, alt. axis 3'0 mm. Largest 

 example. 



The formula of radula (fig. 4 a) is 25 . 7 . 1 . 7 . 25, or 

 32 . 1 . 32. The central and admedian teeth are alike, on 

 broad plates, tricuspid, basal cusps on both sides of the main 

 point ; the marginal teeth also tricuspid, but more evenly so. 



EXPLANATION OF THE PLATES. 

 Plate IX. 



Fit/. A. Erepta leucosti/lu, genitalia, part of, X 2'25. 

 Fi(/.A1. Ditto, jaw, X 9-25, and teeth of tlie radula, X 277, 

 Fit/. B. Frcpta rufozonatu, part of genitalia, X 2-25. 



Fuj. C. Erepta [Ccelatura) rufa, part of genitalia, X 2-25. 



Fitjs.D^Y). Erepta [CcBlatura) caiatura, part of genitalia, X 2-25, 



(The male organ in upper figure is shown detached.) 

 Fig. E. Erepta {Dupontia) levis, sp. n., shell, X 3'4. 



Fitj. E 1. Ditto, extremity of loot, with mantle-edge and part of tlie 



visceral sac, X 6. 

 Fig. E 2. Ditto, right and left dorsal lobes, x 6, 

 Fit). Eo. Ditto, genitalia, part of, X 6. 

 Fig. E 4. Ditto, jaw, X 22 o ; teeth of radula, x 277. 



