138 M. T. C. Winkler on 
In the same year (1822) Desmarest described the ‘* Lan- 
gouste de Regley,” Palinurus Regleyanus, Desm. He 
examined two individuals of this species, both of which are 
contained in a fragment of rose-coloured limestone of rather 
coarse grain, forming a sort of rolled pebble as big as one’s 
fist. They were found at the village of Ru, near Vésoul. 
The author gives the following description of them :— 
““In this species the carapace is elongated, compressed, 
margined at its contours, and covered throughout with rather 
distant granular points. ‘The stomachal region is slightly 
angular, and marked above, in its middle, with a line project- 
ing a little in front, but which changes posteriorly into a 
straight furrow, produced as far as the region of the heart ; 
we see a projecting, granular, longitudinal line on each side 
of that region ; and near its posterior margin we remark a small 
transverse furrow also on each side. ‘The great transverse 
furrow of the carapace, placed behind the region of the stomach, 
is very strongly marked. ‘The genital region is very wide, 
and divided into two parts by the impressed longitudinal line 
which comes from the middle of the stomachal region. Hach 
of these parts has laterally a small transverse impression. 
The cardiac region is of moderate extent, and of a pentagonal 
form, marked in the middle with a small raised keel, which is 
the continuation of the median furrow of the genital and sto- 
machal regions. On each side there is a small, elongate, 
triangular appendage. The branchial regions, which are 
very distinct, are separated from each other by a median im- 
pressed line, and also from the cardiac and genital regions by 
another oblique line, which runs to the sides of the carapace 
at the point where its great transverse furrow terminates ’’*. 
Ihave thought it desirable to reproduce this description 
here, because it will be of service to us hereafter in speaking 
of the genus Arwosternus. 
Pictet says that Palinurus Regleyanus, Desm., is a Gly- 
pheat; and on another page of the work quoted the same 
author says, ‘‘Glyphea Regleyana, H. von Meyer, G@. vulgaris, 
id., Palinurus Regleyanus, occurs in the ‘terrain a chailles ’ 
of the department of the Haute-Sadne” f. 
Milne-Kdwards (Hist. Nat. des Crust. i. p. 302) says that 
Desmarest refers to Palinurus two species of fossil Crustacea, 
but that he does not accept this view of their affinities. P. Reg- 
leyanus appears to him to be most nearly related to Nephrops. 
* Brongn. et Desm. loc. cit. p. 182. 
+ Pictet, Traité de Paléont. tome ii. p. 448. 
{ Pictet, ibed. p. 461. 
