230 Zoological Society. 
character, and very different from any of the tropical aphamy sof rss 
genus. ms Oo ite 
Turso miuiraris. Turb. testd ovatd, imperforatd, andar. aug 
ventricosd, anfractibus levibus, superné declivibus ; rufescente 
albidd, maculis lineisque rufis nitide pictd; columellé margine 
livido-cinereo, intis argenteo. 
Hab. Isle of Annaa (on the reefs); Cuming. 
An interesting species of rather light growth, exhibiting a very 
distinct and characteristic style of painting. 
Turso uistaio. Turb. testd subglobosd, tumidd, inpenvunat spire 
suturis excavato-canaliculatis, spiraliter liratis, liris subtilissime 
laminiferis, squamatis, squamis fortibus, erectis ; nived, aurantio- 
Jerveginee late radiata, intts argented. | 
Hab. 
A shell of ventricose growth, strongly scaled, whilst the entire 
surface is very minutely laminated. 
Turso FLucruatus. Turb. testd transverse ovatd, crassiusculd, 
subventricosd, imperforatd ; anfractibus levibus, superne rudé an- 
gulatis, ad angulum obsolete nodosis, infra liris plano-obtusis, hic 
illic fere evanidis cingulatis ; columella concavd ; olivaced, lineis 
niveis viridi-umbratis, acute? undatis conspicue longitudinaliter 
pictd, intis argented ; operculo testaceo, spiraliter sulcato, medio 
subtilissime granuloso, marginem versus multiserrato. 
Hab. Punta, St. Elena, West Columbia; Cuming. 
An extremely interesting species, which, though of rare occurrence, 
has long been known to me by the above name: from whom it re- 
ceived that appellation, which is very characteristic, I cannot, how- 
ever, learn. It isa shell of solid growth, somewhat rudely noduled, 
and obscurely flatly ridged. The ground-colour is that of a livid 
olive, very conspicuously marked with numerous zigzag gio: -like 
streaks of bright body-white, shaded with dark green. 
The operculum is remarkable: testaceous and strongly spirally 
grooved, the innermost groove is broadly excavated, and the central 
mass is solid and minutely granulated, whilst the portion without the 
broad groove is arranged in numerous concentric, finely- serrated 
lamine. 
April 11.—William Yarrell, Esq., Vice-President, in the Chair. 
The following paper was read to the meeting :— 
SuprLemrentary Nore on THE Great Cuimpanzer (TROGLODYTES 
Goria, Savage, Trogr. Savacer, Owen). By Prorgssor 
Owen, F.R.S. Erc. 
Since the communication of my description of the skulls of the 
great Chimpanzee of the Gaboon district, I have received from an 
esteemed correspondent, Dr. Wyman, Professor of Anatomy in Har- 
vard University, United States, and a most accomplished anatomist 
and physiologist, a copy of his description of the parts of the skeleton 
of the great Chimpanzee which Dr. Savage had taken with him on 
