88 ME. H. WOODS ON THE MOLLUSCA [Feb. 1 896, 



Family Trochidse, Adams. 

 Genus Teochtjs, Linnaeus, 1758. 

 Teochtjs Schlutebi, sp. nov. (PI. III. figs. 11 & 12.) 



Description. — Shell conical, without an umbilicus. Whorls flat, 

 six (or seven) in number, with a deep depression at the suture : 

 surface ornamented with fine longitudinal rows of tubercles, the 

 marginal rows being a little larger than the three inner rows. 

 Tubercles connected by faintly-marked longitudinal and transverse 

 ribs, the latter crossing the whorls obliquely and parallel to the 

 margin of the aperture. In the sutural depression just above the 

 middle is a row of smaller tubercles. The spire is about -^ths the 

 entire length of the shell. Base a little convex, with eight or nine 

 longitudinal (spiral) ribs bearing close-set tubercles. Aperture not 

 well seen. 



Affinities. — The ornamentation of this species is very similar to 

 that in T. amatus, d'Orbigny x (from Haldem, Strehlen, etc.), but 

 in that form the whorls are rounded. 



Distribution. — Chalk Rock of Dover, Oldborough Castle, Cuck- 

 hamsley, Luton cutting, Hitchin, Reed near Royston, and Under- 

 wood Hall near Dullingham. 



Teochtjs beeocscieense, sp. nov. (PL IV. figs. 2-4.) 



Description. — Shell conical, composed of six flat whorls, spiral 

 angle 58° ; spire about -|ths the entire length ; sutures deep. 

 Whorls ornamented with fine longitudinal rows of tubercles, the 

 top and two bottom rows being much larger than the others. Base 

 a little convex, with a depression at the centre ; ornamented with 

 curved growth-lines and a row of small tubercles near the periphery. 

 Aperture sub-rhomboidal. 



Affinities. — This species resembles T. Engelhardti, Geinitz, 2 from 

 the Planer-Kalk of Strehlen ; but in that form the sutures are not 

 so deep, and the ornamentation consists of a row of large tubercles 

 at the top and at the bottom of each whorl, with three or four 

 smaller rows between. 



Remarks. — I have only seen five specimens of this species, all of 

 which are in the Montagu Smith Collection. 



Distribution. — Chalk Rock of Cuckhamsley. 



Family Turbinidse, Chenu. 

 Genus Tuebo, Linnseus, 1758. 

 Tuebo Geinitzi, sp. nov. (PI. IV. figs. 5-8.) 



Description. — Shell turbinate, turrited, sutures deep, spiral angle 



1 'Prodr. de Pal.' vol. ii. (1850) p. 224. For figure see Goldfuss, 'Petref. 

 Deutschl.' pt. iii. (1840) p. 58, pi. clxxxi. f. 7, and Geinitz, ' Das Elbthalgeb. in 

 Sachsen' (Palaeontographiea, vol. xx.), pt. ii. (1874) p. 164, pi. xxix. f. 7. 



2 'Das Elbthalgeb. in Sachsen' (Palaeontographiea, vol. xx.), pt. ii. (1874) 

 p. 163, pi. xxix. f. 5. 



