JUNE 13, 1884.| 
The new society now numbers some two 
hundred members, each of whom pays the 
small annual assessment of two francs. All 
persons are invited to join, and thus to assist 
this most worthy object, the expenses of which, 
especially in the way of publication, must be 
very considerable. 
THE DEEP-SEA CRUSTACEA DREDGED 
BY, THE TALISMAN. 
CRUSTACEA are distributed from the surface of 
the water to very great depths; and, at the exhi- 
bition of the Talisman collection, one“ may see 
SCIENCE. 
713 
Islands, and which much resemble the Portunus of 
our coasts. On the other hand, they are very like 
species of the same genus, obtained at the Antilles, 
in the German ocean, and in the Mediterranean. 
The Oxyrhynchi, other triangular crustaceans of the 
group of Brachyura, are found lower than the last. 
Lispognatus Thompsoni was found between six hun- 
dred and fifteen hundred metres, on the Morocco 
coasts; and Scyramathia Carpenteri, in the same re- 
gion, at twelve hundred metres. The former species 
had before been observed only in the German ocean; 
and the latter, north of Scotland and in the Medi- 
terranean. 
Crustaceans, intermediate in form between the 
brachyurans and macrurans, are found in abun- 
Fig. 1.—GALATHODES ANTONI, A BLIND CRUSTACEAN FROM A DEPTH OF 4,100 METRES. 
Neptunus Sayi and Nautilograpsus minutus of the 
Sargasso, whose color they have assumed, side by 
side with other forms, as Ethusa alba, which is only 
found between four and five thousand metres below 
the surface. The swimming crustaceans, forming 
the group of Brachyura, are extremely rare at great 
depths. Certain forms of these crabs, taken on the 
Talisman, are remarkable for their geographical dis- 
tribution, such as Bathynectes, found at four hun- 
dred and fifty and nine hundred and fifty metres, 
on the coasts of Morocco, and at the Cape Verde 
1 Translated from the French of H. Fino, in Za Nature. 
(NATURAL SIZE.) 
dance in deep water. They seem to belong to genera 
between the two; and, in studying Crustacea, it is 
surprising to see types, which, taken separately, ap- 
pear absolutely distinct, brought into contact by 
these intermediate forms. Thus the genera Ethusa, 
Dorippe, Homola, and Dromia, are linked together 
by many forms, with blended characteristics, render- 
ing them difficult to classify. Several of the crusta- 
ceans are remarkable for their geographical distri- 
bution. Thus, on the coasts of Morocco, there was 
found a species of Dicranomia, noticed by Edwards 
in the Caribbean; and Homola of Cuvier, considered 
