Zoological Society of London. 
307 
larger in proportion to the size and weight of the body than in 
the larger apes and the human species. 
The Echidna having died unexpectedly a short time after its 
arrival, has afforded a favourable opportunity of investigating cer¬ 
tain obscure parts of its anatomy, the results of which Prof. Owen 
would communicate at some future opportunity. 
August 12, 1845. 
“ Description of a new species of Murex.” By L. Reeve, Esq. 
Murex triformis. Mur. testd trigono-ovatd, crassiusculd, 
transversim liratd et corrugatd, tulerculis duobus aut plu- 
ribus inter varices ; trifariam varicosd, varicibus laminato- 
funbriatis, supernc excavato-sinuatis ; f errugineo-f used ; 
aperturd ovatd, superne sinuatd. 
Hub. New Holland. 
This shell, which Mr, Sowerby thought to be a variety of the 
Murex acanthropterus , is of a rude solid structure and dark rusty 
brown colour. 
October 14, 1847. 
“ On the genus Anous, Leach ( Megalopterus, Boie).” By 
John Gould, Esq., F.R.S., &c. 
There is no family of birds more generally diffused over the 
globe than the Terns, and certainly no group of the Natatorial 
Order less understood, or which would more amply reward the 
studious investigation of the scientific ornithologist. The present 
short paper is limited to some species of the genus Anous, for the 
purpose of describing three or four new ones, rather than aiming 
at any thing like a complete monograph of even this little group. 
It will not, however, detract from the interest of the paper, if I 
give a list of the species with which I am familiar, and reserve to 
some future time the completion of the subject. Upon the pre¬ 
sent occasion I shall exhibit five well-defined species ; a sixth, of 
which I am not aware that an example exists in the museums of 
this country, is figured in the ‘ Planches Coloriees’ of M. Tem- 
minck. They are— 
1. Anous stolidus : Sterna stolida, Linn.; Gavia fusca, 
Brehrn ; Anous niger, Steph. 
