166 EOCENE MOLLUSCA. 



No. 104. Voluta horrida. F. E. Edwards. Tab. XXI, figs. 2 a — c. 



V. testa oblongo-ovatd, costatd, postice Icevi, antice transversim sulcata; anfractibus 

 duplici serie spinarum dentiformium donatis ; costis numerosis, lateraliter compressis,/ere 

 ad basin tendentibus, postice tuber culatis et in mucrones primam seriem spinarum forman- 

 tes, prolongatis ; sidcis transversis latis, profundis, castas fortiter decussantibus ; spatio 

 inter series spinarum concavo ; labro tenui, simplici ; columella uniplicatd. 



Shell ovate-oblong, armed with two rows of short, upright, pointed spines, ribbed, 

 smooth behind, transversely furrowed in front ; ribs numerous, thick, angular, com- 

 pressed sideways toward the aperture and terminating posteriorly in sharp conical 

 points forming the front row of spines. The ends of the ribs, immediately in front of 

 the spines present a rounded depression at the anterior margin of which they rise into 

 small tubercles. The transverse furrows are wide and deep, strongly decussating the 

 ribs. The posterior margins of the whorls, between the rows of spines, are sunken and 

 concave; the outer lip is thin, sharp- edged, smooth within? ; the columella presents a 

 single very oblique fold. 



The sharp erect conical spines and the prominent ribs, deeply cut by the transverse 

 furrows are characters so distinct, that I am unwilling not to record the species, although 

 the only specimen I possess has lost the spire and is otherwise imperfect. It appears 

 to be a young shell, and the actual character of the outer lip cannot be stated with 

 certainty ; there are not any traces of the columellar lip preserved. 



Size. — Axis, (without the spire) ^ inch, nearly; diameter, rather less than 3-10ths 

 of an inch. 



Locality. — Bracklesham Bay ; very rare. 



No. 105. Voluta Forbesii. F. E. Edwards. Tab. XXI, figs. 1 a — d. 



V. testa turbinatd, costatd, postice Icevi, antice transversim sulcata ; spird elevald, apice 

 acuto ; costis sub-distantibus, vix adsulcos tendentibus, postice in tubercidos lateraliter com- 

 pressos elevatis, deinde bind serie brevium spinarum coronatis ; aperturd elongato-ovali, 

 angustd, postice sub-canalicidatd, antice late emarginatd ; labro intus incrassalo, admarginem 

 acuto ; labio effuso j columella recta, biplicatd. 



Shell turbinate, ribbed, transversely furrowed at the base, smooth behind ; spire 

 elevated, pointed, with a small conical apex; ribs rather distant, extending scarcely 

 beyond the middle of the whorls, rising at the posterior extremities into large, prominent, 

 laterally compressed tubercles, and crowned with a single row of short, erect, tooth-like 

 spines. The sutural margin is depressed and bordered by a raised line, which occa- 

 sionally rises into minute pointed tubercles ; aperture of a lengthened oval form, 



