PROCEEDINGS OF THE ZOOLOGICAL'SOCIETY. 
59; 
fourth subgenus of Tiara, in which group it 
is the fourth subtype, uniting to Mitramaurn, 
which is the fourth stibtype of the first or 
typical subgenus. Mitra maura, again, as 
representing this latter shell, consequently 
becomes the fourth subtype of the first or 
typical subgenus, and is therefore marked 
“Type I, 4.” The first figure always denotes 
the subgenus, and the last the staiion which 
the species appears to hold in its own 
subgenus, 
“ 1 am unacquainted with any group in the 
animal kingdom which demonstrates more 
fully than this does the law of representation. 
It may be mentioned, also, that nearly all the 
divisions I had long ago characterized, from 
the formation of the shells alone, have more 
recently been confirmed by a knowledge of 
their respective animals : a knowledge for 
which we are entirely indebted to the able 
naturalists who accompanied the French 
expedition onboard the Astrolabe.’’ — W, S, 
Specimens were exhibited of several hi- 
herto undescribed Cowries most of which 
have been brought to England within the 
last few years. They were accompanied by 
characters and descriptions, by J. S. 
Gaskoin, Esq., which are given in the “Pro- 
ceedings” under the following names, viz. 
Cyprceaformosa (Cape of Good Hope), rii- 
Hnicolor, producta, candidula f'Mexico. Cpp. 
approximans, Beck, Cyp. olorina Duclos, but 
first described by Mr. Gaskoin), acutiden- 
tata ^^Isle of Muerte, Bay of Guayaquil), Pe 
diculus, var. labiosa, vesicularis (Cape of Good 
Hope), and Bec'<ii. 
'I’here was read an “ Extrait du Q,uatrieme 
Rapport Annuel sur les Travaux de la So- 
ciete d’Histoire Natui-elle de I’lle Maurice : 
par M. Julien Desjardins.” 
The communications relative to the Mam^ 
malia read before the Natural History Socie- 
ty of the Mauritius in the fourth year of its 
existence have comprised an account, by the 
secretary, M. Julien Desjardins, of a Whale 
which he regards as the Physeter macrocepha- 
lus, Linn, , that was cast ashore on an ad- 
joining reaf : and some observations by the 
same author on several of the Mammalia of 
the island, and particularly on the hyberna- 
tion of the Tenrec, Centenes spinosus, 111. ; 
the lethargy of which animal takes place 
when the thermometer is not lower than 20° 
Cent., and even when it marks 26°. 
In ornithology M. Desjardins has also been 
the only contributor. He has described, as 
new, two Birds belonging to the island, and 
has proposed for them the names of Chara- 
drius Nesogallicus and Scolopax elegans. 
M. Lienard, the elder, has, in the course 
of the year, described many Fishes, including 
a new species of Plectropoma. allied to the 
Plectr. melanoleuca, Cuv. & Val., which is 
of a uniform brown colour, with all its fins 
of a still deeper brown, except the pectora 
which are orange ; on this latter character 
his specific name is founded : a Holacanthus, 
La Cep., from Batavia, remarkable on ac- 
count of the numerous sinuous silvery lines 
which occupy principally the middle of the 
body; and having also on its face two yellow 
and two black bands, one of which is ocular : 
a Cheilinus, Cuv. : an Echeneis, Linn., fur- 
nished, on its suctorial disc, with twenty- 
five hairs of plates: and a Murana, Thunb., 
the body of which is of an ebony black, and 
the dorsal fin yellow ; the trivial name being 
indicative of the latter peculiarity He has 
also given some account of a collection of 
Fishes obtained from the western coast of 
M adagascar . and comprising thirteen species, 
several of which he regai*ds as new. M. Des- 
jardins has described as the hlue-faced Te- 
frodon, a species remarkable for two large 
blue spots on each side of its face, and hav- 
ing the fin-rays as follows ; D. 15 a. A. 12. 
P. 14. C. 14. ; it inhabits the seas adjacerlt 
to the Isle of France. 
In entomology the only communication 
made to the Mauritius Society was by M. 
Goudot, and related to the Insect described 
by Mr. Bennet at the Meeting of the Zoolo- 
gical Society on January 22, 1833, (Pi-oceed- 
ings, Part i., p. 12 ; Lond. and Edinb. , Phil- 
Mag., vol. ii. p- 478,) under the name of 
Aphrophora Goudoti. The communication 
made to the Zoological Society, of which a 
full abstract is given at the page quoted, was 
apparently identical with that read before the 
Mauritius Society. 
The remaining zoological communication 
related to the Intestinal Worms, and was 
made by the Secretary. Ft gave some ac- 
count of the Distoma hepaticum, Cuv., as 
found in the stomach of a cow; and of the 
Cysticercus Cellulose, Brems., existing in 
innumerable quantities over almost the whole 
of the head, trunk, and extremities of a sow. 
An “ Extrait du Cinqui^me Rap rmrt An- 
nuel” of the same Society, by M- Julien 
Desjardins, Corr. Memb- Z. S., was also 
read. 
In the year of which the present Report 
gives an account, M. Desjardins has com- 
municated to the Natural History Society of 
the Mauritius, a list of several species of 
Birds that are occasional visitors of that 
island ; and has also referred particularly to 
the Cotumix Sinensis, Cuv. , and the Nectari- 
nia Borhonica, 111., as stationary in the 
Mauritius. 
M E. Lidnard has brought from the Sey- 
chelles a species of Gecko of con.siderable size, 
which he has described in a communication 
made to the Society: and M- E. Lidnard has 
placed on record the existence in the adjacent 
seas of the Sphargis coriaceus, Merr- 
M- Lidnard, the elder, has again made 
numerous contributions to ichthyology. He 
has given a detailed description of the Squalus 
Vulpes.IAnn. : has described as newaTn- 
chiurus, Linn., which he had formerly regard- 
ed as the Trich. lepturus, Ej-, but which 
has the eye much larger, more numerous 
striee on the suhoperculum, and a few more 
rays in the dorsal fin : and has also describ- 
ed two species of Crenilahrus, Cuv., which 
he regards as new; one of them has three 
longitudinal rose-coloured bands on the white 
ground of the body, others on the dorsal 
