226 



Motes on Species little known, inadequately descrilDeci 

 or hitherto unfigured. 



Neptuneopsis pyrrhostoma, Watson (Plate III., fig. i). 

 Fusus {Siphd) pyrrhostoma, Watson, Linn. Soc. Journal, Vol. 

 xvi., p. 374. 



The shell of this remarkable mollusk resembles in some re- 

 spects that of Sipho cretaceus, Reeve. It is, however, far re- 

 moved from that family, and through the kindness of Mr. S. 

 Pace, who has examined the soft parts, I am able to state con- 

 clusively that it belongs to the Volutidce. Mr. Pace says : " The 

 sum of the characters of this interesting form leaves no doubt 

 but what it should be referred to the volutoid series in the im- 

 mediate neighbourhood of Neptuneopsis." At present I see no 

 reason why it should not be included in that genus. Although 

 a much smaller object there is nothing, conchologically speaking, 

 to separate it generically from my N eptiincopsis Gilchristi; 

 the structure of the head is practically the same ; and, as in that 

 species, the eyes are reddish, not black as are those of the ma- 

 jority of the Prosobranchs. The siphon has the lateral ex- 

 pansion met with in Neptuneopsis. The introvert apparatus is 

 strongly developed, and in the retracted state it forms a iaige, 

 almost globular mass. Two pairs of salivary glands are repre- 

 sented, and are of the characteristic Volutoid type. Leiblein's 

 gland is enormously developed ; it is of greater calibre than the 

 oesophagus and occupies the major portion of the body-cavity, 

 but its walls appear comparatively thin. The nervous system 

 is typically Volutoid, and the supra-cesophageal ganglion is 

 situated in close proximity to the nerve-ring. 



The radula is uniserial ; and the teeth in shape are rather in- 

 termediate between those of N. Gilchristi and Cynibiola 

 oncilla. 



VOLUTA (Lyria) Queketti, Smith. (Proc. Malac. Soc. Vol. 

 IV., p. 234. Cape Natal bearing N. \ W. ; distant 4! miles; 

 depth, 27 fathoms. Also, O'Neil Pk." (Natal) bearing N.W. \ 

 W. ; distant g^ miles ; depth, 90 fathoms ; and Umhloti River 

 ISTouth (Natal)' bearing N.N. W.; distant \ mile; depth, 27 

 fathoms. Very rare. 



Marginella DIADOCHUS, Adams and Reeve, Voy. Sama- 

 rang, 28, plate 7, fig. 4, i860. Cape St. Blaize bearing N. by E. 

 \ E., distant 65 miles; depth, 85-90 fathoms, and 90-100 

 fathoms. The original specimens of this rare species were pro- 

 cured in the voyage of the " Samarang " in the straits of Sunda. 



