308 



Adeorbis kimberi, n. sp. PL xxix., figs. 1, 2. 



Shell minute, translucent, oval. Whorls 2|-. Spire 

 very low. Apex blunt; protoconch half a whorl, its apex 

 buried, smooth, rounded, marked off from the spire-whorl hy 

 a scar. Suture impressed, slightly excavate. Periphery 

 sharply carinate. Base very flatly rounded, and pressed flat 

 at the carina. Umbilicus very wide and not defined. Aper- 

 ture roundly oval, nearly on the basal plane ; outer lip uni- 

 formly round, simple, thin, pinched into a minute gutter close 

 to the suture; inner lip is a thin glaze over the body-whorl. 

 Columella slightly arcuate, its edge posteriorly expanded and 

 reflected over the umbilicus. Sculpture : crowded fine micro- 

 scopic curved accremental lines ; on the base more valid and 

 fewer, and as radiating curved wrinkles, which faintly crinkle 

 the carina. 



Dim. — Greatest diameter, 3*7 mm. ; sm.allest, 2'9 mm. ; 

 height, 1*2 mm. 



Locality. — Aldinga (Kimber). Dredged in St. Vincent 

 Gulf in about 20 fathoms (Verco). 



Diagnosis. — It is allied to A. anr/ani, Adams, but has not 

 the distant tubercles on the carina. 



It is named after the collector who found it. 



Torcula runcinata, Watson. PI. xxix,, fig. 14. 



TurriteUa runcinata, Watson, Proc. Linn. Soc, Lond., 1881, 

 vol. XV., p. 218; Chall. Zool., 1886, Gasteropoda, vol. xv., p. 475, 

 pi. XXX., fig. 3. 



An individual of 38 mm. in length was dredged alive. 



The radula is exceedingly small compared with the size of 

 the shell. It has a somewhat quadrate rachidian tooth, finely 

 denticulated, along the edge of its upper border, bent forward 

 at a sharp angle. The single lateral is transversely rhom- 

 boidal, about twice as large as the central, and is also finely 

 denticulate along the free edge of its bent-forward upper mar- 

 gin. The two marginals, elbowed about their middle, hav6 

 a flange projecting from their upper border, and finely den- 

 tate. Miss J. Donald, in a paper on ''Some Recent Gastero- 

 poda, referred to the Family Turritellidce, and their Supposed 

 Relationship to the Murchisoniidae," read January, 1900, and 

 published in Pro. Mai. Soc, London, 1901, p. 47, etc., men- 

 tions T. runcinata, Watson, among other species of T'lirritelJa, 

 and from their deep labral sinus suggests their affinity with 

 Mttrchisonia. The Pleurotomariidse and Murchisoniidae 

 are regarded as belonging to the Rhipidoglossa. But the 

 radula of T. runcinata, Watson, plainly places it amone: the 

 Tsenioglossa, and allies it with the ordinary forms of Tnrri- 

 tella, rather than with Murchisonia. If therefore Murchi- 



