64 NERITULA. 



IV. Africa , X. KLONJATA= X. ORIENS (China Sea* , X. LVCIDA 

 (Keeling* Z*Z.), X. JvrrnopicA ( Kabenda, W. Africa . X. IN- 

 GENDA. 

 The following species are mentioned by name only in Marrat's 



u Varieties of Xassa,' 1 and I presume tliat they have not been 



described. 



X. XIVIFER, X. IXTKllSTIXOTA, X. C.'OKlU'i JATA. X. KKCKD1VA (' 



ds). 



In the " Varieties I find the following specific names attributed 

 to other authors, but which do not appear to l.ave Ic-en described: 

 X. Lixr.oi.ATA, Phil.: X. PUSIOLA, Bunker ( V KLA, 



AVatson (Arnboiiiii : X. AGAIKTA. Watson i L<> 

 LATA, Thorpe (China); X. BRYCIITA, AVatson (( . 020 



fathoms); X. SPILUS, Watson (Bain /*/., T<>,T< N. BABY- 



LON ICA, Watson; X. BIBALTEATA, P< : X. 



R8A, Carp, (innnitrm. Cnrp.: x : X. GAMI.KA. ("lark; X. rox- 

 FERTA, Martens. 



<ipnn5 NEEITULA, I'laiv 



In Xt>rit>ila the last whorl is depressed and extends over the 



penultimate whorl, nearly covering- and concealing th- lich 



equently appears very obtuse. The animal has a bifid tail, 



and operculum similar to Nawi. Risso's name- has 



ily us(Ml for this group. H. and A. 



gen; loma was originally placed next to Ni-ritiila. in t 



'' subsequently they removed it to the .Rotollin;' 



X. XKHJTKA. Linu. PI. 18, figs. . ,r>.>-;j,y;. :->5t). 



Shell smooth and polished; fulvous minutely speckle*! with 



-iuut-bro\vn. with usually darker and larger ma. 

 ing a sutural hand and another upon the periphery: the cal! 

 flattened columella, yellowish stained with brown, is spread out 

 in circular form covering the inferior surface to the periphery. 



Diam.. *o inch. 



The shell. JIMS very much the appearance of a Rot>>llti. f being 

 transversely flattened into a disk-like form. X. //' 

 a synonym; 1 figure two examples of it to show the young and 

 half-grown states of tne species (figs. 355. 356). 



