226 



fJotes on Species little known, inadequately described 

 on hitherto unfigured. 



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

 Fusus (Sipho) pyrrhostoma, Watson, Linn. Soc. Journal, Vol. 

 xvi., p. 374. 



The shell of this remarkable mollusk resembles in some re- 

 spects that of Sipho cretaccus. 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 Voliitidce. 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 K cptiincopsisP At present I sc^ 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 Neptimeopsis 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-oesophageal 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 A^. Gilchristi and Cymbiola 

 ■oncilla. 



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

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

 depth, 2; fathoms. Also, O'Neil Pk." (Natal) bearing'N.W. \ 

 W. ; distant 9^- miles ; depth, 90 fathoms ; and Umhloti River 

 Mouth (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- 

 •ciired in the voyage of tlie " Samarang " in the straits of Sunda. 



