88 



5. Cancer Pagurus, Auct. Caiic. testd granulatd ; margine an- 

 tico-laterali deceni-lobato, lobis quadratis, contiguis, integris ; 

 manibus Icevibus. 



Hab. ad oras Magnse Britaimise et Europse Occidentalis. 



In illustration of Mr. Bell's paper the several Crabs described in 

 it were exhibited, and it was stated that drawings of them would be 

 prepared. 



Mr. Bell subsequently read a paper " On Microrhynchis, a new 

 Genus of Triangular Crabs." Its characters are thus given : 



MiCRORHTNCHUS. 



Testa subtriangularis, postice rotundata, antic^ rostro brevissimo 



terminata. 

 Oculi pedunculo elongato multo crassiores, retractiles. 

 Orbita suprk unifissa, extrorsiim unidentata. 

 AntenncB exteriores ad latera rostri insertse, articulo basilari rostro 



vix breviore. 

 AntenncB interiores in fossula integra antic^ aperta et ad apicem 



rostri fer^ attinente locatae. 

 Pedipalpi externi caulis interni articulo secundo cordifonni, antice 



profundi emarginato. 

 Pedes antici maris corpore vix longiores, reliquis multo crassiores, 



digitis arcuatis ; foeminse minimi : pedes octo posteriores subcon- 



similes, corpore fere duplo longiores, unguibus leviter curvis. 

 Abdomen maris 7- foeminae 5-articulatum (hujus articulis tribus 



ultimis conjunctis). 

 Genus Camposcics affine, et verosimiUter Camposciam inter et 7wa- 

 chum collocandum. 



1. MicRORHYNCHus GiBBosus. Micr. tcstd gibbosd ; rostro bifida . 

 Long, testae 6 ; lat. 5 lin. 



Hab. ad Insulas GaUapagos dictas. 

 Flavescenti- albidus . 



2. MiCRORHTNCHUS DEPREssus. Mtcr. testd depressd, granulatd; 

 rostro minuto, triangulari, integro. 



Long, testae 6 ; lat. itidem 6 lin. 



Hab. cum praecedente. 



Albidus cameo obsoletissim^ tinctus. 



The reading of the paper was illustrated by the exhibition of the 

 specimens on which it is founded, and which form part of the same 

 collection with the Crabs before referred to. Mr. Bell stated that 

 he regarded it as part of a Descriptive Catalogue of the Crustacea of 

 the western coast of South America, on Avhich he is now engaged, 

 and the materials for which wiU be chiefly furnished by the collec- 

 tion presented to the Society by Mr, Cuming. 



