lig Scientific Intelligence. 
restantes, depressione ad eos recipiendos parce concava : tarsis styli- 
ormibus, unguiculatis, spinis infra armatis, paris postici apice setis 
longiusculis instructis.—T'y pus est Monolepis spinilarsus, Say. Hic per 
lineret quoque Meg. mutica, Desm., si ejus pedes postici setis longius- 
culis confecti; aliter genus novum instituendum. Verbum “ Marestia’ 
Desmarest commemorat clarissimum. Si 
- Mecatopa. Leach.—Carapax fronte simpliciter rostratus, rostro 
vix deflexo, acuto. Pedes 8 postict ad basin infra uni-spinigeri; 5tt 
minores tarso styliformi.—Typus Meg. Montagui, Leach. 
: ENE, Dana.—Carapacis frons uti in g . 
postici ad basin infra uni-spinigeri ; 5ti minores, tarso anguste lamellato, 
R1BoLA, Yana.—Carapax fronte horizontalis, tricuspidatus, rostto 
’ 
(vel cuspide mediana) tenui, cuspidibus externis vix longiore. Antenn@ 
List of new species of Megalopidea described in this paper i— 
Marestia elegans, M. atlantica, M, pervalida ; Monolepis orientalis; 
Cyllene hyalina, C. furciger; ‘Tribola lata, T.:pubescens, 
Macrovra.—In the account of the Macroura, this tribe is arranged 
anew, several new genera are added, and 59 new species described. 
In citing the general remarks, the writer and author here makes a sin- 
gle modification, which consists in removing the Penzus group from 
the Caridea, and making it a distinct subtribe. we 
We follow De Haan in placing the genus Galathea with the Ano- 
ura ; and near it we arrange Aiglea, which widely differs from most 
tions or subtribes, pertaining to two seri 
The first series includes the “ Fossores” of authors, or the T 
LASSINIDEA, which have close relations on one side with the Pagurly 
e Macroura, excluding these groups, includes three distinct sec 
es. 
compact forms of the typical Macroura. ‘The ant uc 
directly forward, and are thus fitted for the burrowing, habits of the 
species. 
The second series embraces the remaining Macroura. There are 
three grand divisions or subtribes included in the series—a superior, # 
typical, and an inferior. ; 
first is somewhat Brachyural in its characteristics, and is made 
up of the Asracipea. Their relation to the Brachyura and their cephali@ 
dwantit< Pod. Brit, pl. 16. Leach describes three other species (not noticed bf 
po a rckey's Exped. to the Zaire, (London, 1818,) ee The Af. Oram 
a 
