eA 
v 
GASTROPODA. 7 
Ouiva TRUNCATA, Marvat, Sowerby, Thes Conch., vol. 
iv., pl. 331, fig. 41.—Cape of Good Hope (Marrat). 
Oxiva micans, Solandey, Sowerby, Thes. Conch., vol. iv., 
pl. 345. figs 294-296. O. nana, Lam.—S. Africa (Tryon). 
Ouiva IsprpuLa, Linn, Sow., Thes. Conch., vol. iv., p. 21, 
pl. 343, fig. 248 —Knysna. 
Outva scituLa, Marrat, Sow., Thes. Conch., vol. vi., 
pl. 333, fig. 76.—Durban. 
ANCILLA DECIPIENS, Sowerby, n. sp. (pl. 6, fig. 23). 
Testa oblongo-ovata, crassa, pallide purpurascens, antice et 
postice fusco fasciata; spira mediocriter elata, obtusiuscula ; 
anfractus 6, planato convexi ; callo tenui obtecti ; callositate 
polita, fusco fulvoque zonata; anfractus ultimus convexius- 
culus, haud angulatus ; columella arcuata, callosa, purpurea, 
superne callo fusco latemarginato effuso ; apertura oblongo- 
ovalis, intus purpurea. 
Long. 28, diam 15 millim. 
Hab., Port Elizabeth. 
Allied to A. obtusa and australis, but distinct from both. 
ANCILLA. contusa, feeve, Conch. Icon. (Axcilavia), pl. ix, 
fig. 31.—Durban. ; 
ANCILLA opTiMA, Sowerby, n. sp. (Plate vi. fig. 31). 
Testa subfusiformi-ovata. solidiuscula pallide fulvo-carnea, 
longitudinaliter sparsim rufescente strigata, antice et postice 
vivide fusco fasciata; spira mediocriter elata, acutiuscula: 
anfractus 6, planato-convexi, callo tenui obtecti; callositate 
polita, fusco fulvoque balteata; anfractus ultimus con- 
vexiusculus, superne obtusissime angulatus, liris obliquis 
numerosis angustis instructus, infra anguum callo fusco 
sulca alba marginato, infra medium zona angusta alba, sulca 
vix profunda marginata, cinctus; ad basin varice calloso 
fusco unisulcato terminante ; columella alba, polita, levissime 
contorta, extus biplicata, superne callo albo effuso; apertura 
latiuscula, alba. 
Long. 38, maj. diam. 21 millim. 
Hab. Durban. 
Of this fine species, I have at present only seen two 
specimens. It is allied to 4. austvalis and A. obtusa, from both 
ot which, however it differs very materially. It may be 
readily distinguished from its congeners, by its acutely conical 
spire. 
