473 



T8. OvuLUM DORsuosuM (pi. ci. f. 97, 98), Hinds, Moll. 

 Voy. Sulphur, p. 47. pi. xvi. f. 3, 4. 



"O testa elongato-ovata, minutissime striata, utrinque sub-acu- 

 miuata ; dorso supra medium rotundato, ijiferne attenuate, labro 

 antice planulato, sulcato; columella inferne sub-excavata, intiis 

 plica longitudinali munita." 



In some degree resembling 0. stnatalim, but tlie thick part is 

 liigher and more rounded ; the outer edge of the outer lip, and 

 the callosity and edge of the canal are crenulated. 



Found at the straits of Malacca, in mud, at the depth of nine 

 fathoms. 



19. OvuLUM HORDACEUM (pi. ci. f. 110 to 112), Lamarck, 

 Anim. s. vert. vii. p. 369. 



O. testa oblonga, sub-cylindracea, striata flavida rubescente, vel 

 rubra supra medium angulata, ad angulum crenulatum, ad ex- 

 tremitates angustata ; labio externo postice angulato, extiis crenu- 

 lato, intiis minute denticulato, ad canales emarginato, labio interno 

 postice tumido, crenulato, ad canalem acuminato, antice intus 

 longitudinaliter unipHcato, ad canalem acuminato. 



A rather cylindrical, striated shell, with a carinated angle above 

 the centre ; the outer lip is crenulated at the outer edge, as well 

 as on the flat, inner surface. 



From the East Indian Arcliipelago. 



20. OvuLUM COARCTATUM (pi. ci. f. 108, 109), Sowerhy, 

 jtmr., MoU. Voy. Samarang. pi. vi. f. 2. a, b. 



0. testa elongata, sub-cyhndracea, fulva, striata, supra medium 

 gibbosa, ad extremitates coarctata, labio externo paululilm in- 

 crassato, Isevi, antice sub-angulato ; labio interno intus sub-de- 

 presso, ad extremitates acuminato. 



This shell resembles 0. hordaceum in some degree, but is not 

 angular, and has the outer lip smooth. It may, however, very 

 possibly be a young shell. 



Brought in the Samarang from the Straits of Sunda, near Java. 



21. OvuLUM DENTATUM (pi. ci. f. 101, 102), Sowevhy , junr . 

 Moll. Samarang. pi. vi. f. 4. a, h. 



0. testa parva, oblonga, sub-angulata, minute striata ; palhde 

 rosea, fusco rubescente variegata ; canalibus sub-productis, emar- 

 ginatis; apertura angustata; labio externo breviusculo, compla- 



