130 G. Nevill — New or little-Jcnoivn [No. 3, 



Gibbus dupontiantjs, G. Nevill, PI. VI, Fig. 1. 



J. A. S. Beng\, 1870, p. 411, and I. c, 1871, p. 7, also Handlist p. 9, [sine 

 descr.] ; P. Zool. S. 1868, p 260, animal described as that of " G. versipolis" ; = P. 

 versipolis, Pfr. var. [not of Fei'ussac]. 



T. aperte rimata, subcylindrica, sat so lidiuscula,flavido-comea, oblique 

 confertim fort iter sulcata, costis latis,Jlexuosis ; spira cylindrica, in conum 

 perobiusum terminata ; anfr. 7, convexiusculi, ultimus precedentibus vix 

 major ; apertura subvert icalis, ovalis, sine dente parietali ; perist. late 

 expansum, pallide luteum, marginib'us callo Icevi junctis. 



Long. 14£, diam. 6f mil. Savanne District, Mauritius. 



The number of whorls, different sculpture, absence o£ parietal tooth, 

 light yellow colouration, &c, easily distinguish this species from its nearest 

 ally G. bacillus, Pfr. : the animal is also different, as can be seen by reference 

 to the Proc. Zool. Soc. 1868, p. 259 and 260 (G. bacillus and G. versipolis) ; 

 it is perhaps Pfeiffer's Mauritian variety of P. versipolis, but is certainly 

 not Ferussac's species from Bourbon (= P. funicula, Val.), as already 

 pointed out by M. Morelet and myself. 



Ennea (Huttonella) moeechiana, Roepstorff, MS. 



Deeply, openly umbilicate, the umbilicus partly covered by the deflect- 

 ed last whorl ; cylindrically ovate in shape, almost exactly like a gigantic 

 E. stenopylis ; arcuately ribbed, ribs thick and rather distant; white, 

 solid, with obtusely conoidal apex and distinct suture ; whorls 6|, convexly 

 tumid, narrow, the 4th and 5th of equal breadth, the last not so broad and 

 very little higher, rounded at base and brought round in front, so as to 

 bring the aperture almost into the centre, or axis, of the shell, much as in 

 JEJ. stenopylis, thus partially covering the umbilicus ; aperture vertical, 

 contracted, quadrate, peristome anteriorly strongly sinuate, then very 

 broadly reflected, quite straight, not oblique as in its ally, the columellar 

 and basal margins more broadly reflected and boldly, evenly rounded instead 

 of the former being nearly perpendicular as in JE. stenopylis, margins 

 joined with a callosity, nearly straight, in the centre provided with a well 

 developed prominent, perpendicular tooth (or fold), another strong, but 

 less prominent fold within the outer lip, at base of fc ne above mentioned 

 " sinus," that is where the peristome becomes markedly reflected, behind 

 which there are some ten ribs so closely crowded together as to give 

 almost the appearance of one very broad " varex," these ribs partially 

 block up the umbilicus. 



Long, (vix) 5, diam. max. 2| mil. 



I have much pleasure in adopting, for this remarkable form, Mr. de 

 Roepstorff's MS. name in honour of his late friend Dr. Moerch of Copen- 



