80 
Mr. Gould exhibited a new species of Hawk, belonging to the 
genus Elanus, which he thus characterizes :— 
Exanus scriptus. Elan. fronte et lined superoculari albis ; capite 
et corpore subtis saturate cinereis, rufescenti-fusco lavatis ; tectri- 
cibus alarum fulgideé nigerrimis ; parte ale interiore notd latd 
nigrd, per humerum et antibrachium eductd, instar litere V (aut 
potiis VV, utriusque ale pagind interiore in conspectu,) im- 
pressd. 
Forehead and line over the eye white; head and all the upper 
surface dark grey, washed with reddish brown; wing-coverts deep 
glossy black ; primaries greyish brown, becoming nearly white on 
their webs, all but the first two or three margined with white at the 
tip ; secondaries brownish grey on the outer web, white on the inner 
and at the extremity; tertiaries brownish grey ; two centre tail- 
feathers grey ; the remaining tail-feathers pale brown on their outer 
webs and white on the inner; lores black ; all the under surface and 
edge of the shoulder white; on the under surface of the wing fol- 
lowing the line of the bones a broad mark of black assuming the 
form of the letter V, or if both wings are seen at once, of a W ; bill 
black ; cere and legs yellow; claws black ; irides orange. 
Total length, 15% inches; bill,14; wing, 124; tail, 74; tarsi, 14. 
Hab. South Australia. 
Mr. Gould next called attention to a collection of Birds from 
India, recently presented to the Society by Walter Ewer, Esq. 
A paper by G. B. Sowerby, Esq., containing descriptions of new 
species of Shells belonging to the genus Cyclostoma, was then read. 
The species described in this paper were collected in the Philip- 
pine Islands by H. Cuming, Esq., by whom they were exhibited. 
CYCLOSTOMA ACUTIMARGINATUM. 
Cycl. testd suborbiculari, conicd, tenui, levi, subpellucidd, badid, 
albido-marmoratd, spird subacuminatd, submammillari, anfracti- 
bus quatuor, raptim crescentibus, supra infraque rotundatis, mar- 
gine carinato, acuto, prope suturam marginemque coloribus articu- 
latis ; aperturd magnd, orbiculari, peritremate reflexo, albo, in- 
erassato, prope ultimum anfractum subinterrupto, superne produc- 
tiore, minime reflexo ; umbilico mediocri, profundo. Long. 0°9 ; 
lat. 1:1 poll. Operculo corneo, multispirali. 
Hab. supra foliis Palmarum apud Catbalongan Insule Laman 
Philippinarum. 
An elegant species, remarkable for the sharpness of its edge (in 
which it resembles a Carocolla), as well as for the beautiful arrange- 
ment of the colouring. 
Cyctostoma Luzonicum. 
Icon. Sowerby, Species Conchyliorum, Pars 24, Cyclostoma, f. 133. 
Cycl.testd suborbiculari, albidd, castaneo-variegatd, spird depressius- 
culd, obtusd ; anfractibus quatuor ad quinque, rotundatis, concinne 
