Zoology. Ee . 
the main Australian range along the meridian of 149°, where gold has 
been found. Rev. Mr. Clarke states the singular fact that just 90° west 
of the auriferous range in Australia, we find an auriferous band in the 
Urals ; and just 90° west of the Urals occur the auriferous mountains 
of California. 
Ill. Zooroey. 
1. On the Classification of the Crustacea Corystoidea; by James D. 
Dana.—The Corystoidea have their closest relations with the Can- 
ctoidea, and form a passage between this division of the Brachyura and 
the Hippidea. They are remote from the Oxystomata in the mouth 
and efferent branchial channels, the latter having these channels medial 
over the palate, and the former lateral like the Cancroids. In the pro- 
jection of the outer maxillipeds over the epistome, the elongated and 
more or less pilose outer antennze, and the partially free or less closely 
inflexed abdomen, the species exhibit their degradation below the Can- 
cer type. The Platyonychide are the Cancroids which approximate 
ie senera quite low in rank in a group we Name BELLIDEA which 
. 
‘ ia and Kraussia are also without a beak, hi e the 
apg but have the outer maxillipeds overlapping the epistome. 
_© Temaining genera have the front somewhat rostrate, the inner an- 
~et © er megle # 
* In the ; ae oe : Ee 
Placed A pie of the Cancroidea in this Jour,, vol. xii, p. 131, Corystoides 
ner Catt Acanthocyclus, to which it has close relations; bat from thi and the 
inner ane tlds, it is removed by the absence of all power of retraction in | 
on @ new genus lis, published 
The name Belli lieated in the science, in an article 3 ee 
Csi s <r 2 Lei is, pu “ne 
uals and Mag. Nat. ri i, 318: pl 11 ~, The description st ae 
Wawarde's gen’, Not Hist, 2 Te initia in the Ann, dee Sc Nat 8), ix, 1848 
Pigg 8°Rus of this name Be, 
