105 



A form approaching P. Sandlcri, Partscli. (Vienna basin 

 Miocene and in habit also resembling^ P. costeUaria, Nyst 

 {Rech. coq.foss. llosscU et Kl., p. 31) but smaller and more 

 slender than either. Much approaching in character many of 

 an existing Australian Mangelias, with which it would pro- 

 bably be associated by many naturalists. I prefer to teep it 

 with the Pleurotomas because of the very conspicuous sinus 

 which is also margined, the margin extending remarkably on 

 the body whorl. The number and size of the half ribs varies 

 in different specimens. 



Pleueotoma paracantha. n.s. Shell fusiformly tur- 

 retted, spire pyramidal acute, and nearly twice as long as the 

 aperture ; spirally equidistantly Urate, with an angle and a 

 spiral row of tubercles about the upper third of the body 

 whorls, and the lower part of those of the spire ; finely longi- 

 tudinally luidulately striate with the lines of growth in which 

 the profound broad rounded sinus of the outer lip is very con- 

 spicuous upon the keel; interstices between the lirse with 

 3-4 fine lirulae, tubercles on the carina sometimes broad and 

 sharp-edged, sometimes white, round, enamelled and pi-ojecting 

 almost like spines, mouth pyriform, outer lip acute, thin, inner 

 lip defined, slightly enamelled ; canal short, almost truncate, 

 base strongly and finely in the interstices, spirally lirate, and 

 almost cancellate behind the columella. Long. 33, Lat. 13. 

 Not common at Table Cape. A very distinct form having 

 some relations with P. caiapliracta (Murex c. Brocchi Conch, 

 foss. subap. Tom. 11, p. 427) and P. turhida, Lamarck, Hist. an. 

 8. vert. Vol. 7, p. ^7, which is the P. colon of Horn, and P. 

 crussata of Nyst, Coq. foss. de Belg. p. 511. That shell has the 

 spire short in proportion to the whole length of the shell. 



Daphnella columbelloides. n.s. Shell small, fusiform 

 sub-turretted, rather solid, and much the aspect of a colum- 

 bella, whorls seven apical ones margined at the suture, and 

 ribbed with rounded smooth oblique ribs, 8-12 in each whorl; 

 penultimate, and last whorl smooth, margined at the suture ; 

 aperture long and narrowly fusiform, rounded posteriorly; 

 outer lip and columella simple and truncate. The lines of 

 the sinus only visible with a lens, rather recurved than deep. 

 Long. 12, Lat. 5. Not common. 



Pletjrotoma johnstonii. n.s. Shell fusiformly turretted, 

 solid, apex acute, transversely striate, and finely, un- 

 dulately, longitudinally, striate (whorls 11, with o spiral 

 ribs below (the middle one most prominent), forming a tu- 

 midity above the suture, which is distinct but not impressed, 

 above which the former fissure marks form almost nodular 

 crescentic markings above these the lines of growth curve for- 

 ward to the summit, and are crossed by regular equidistant 



