ME. T. BELL ON A NEW GENUS OF CRUSTACEA. 27 



iridescent ; the head and thorax closely and coarsely punctured ; the 

 base of the abdomen roughly punctured, the two following segments 

 much more finely so ; the apical segment armed with six teeth, the 

 outer ones subacute. 

 Hab. Celebes. 



3. Chrysis sumptuosa. C. fortiter punctata, metallico-viridis auro 

 lavata ; thoracis disco, abdominis segmentis secundo et tertio basi pur- 

 pureis ; segmento apicali margine integro. 



Length 3^ lines. Golden-green ; the thorax at the sides and posteriorly 

 with bright coppery effulgence ; an oblong purple spot on the disk of 

 the thorax ; the metathorax and its lateral teeth vivid green, the vertex 

 and prothorax splashed with gold. Abdomen : the basal segment 

 bright green, with a bright coppery or golden effulgence at the sides ; 

 the second segment purple at the base, coppery at the apex, and with 

 a suflPusion of green between these tints ; the third segment is simi- 

 larly coloured, with the apical margin entire ; the insect closely and 

 strongly punctured throughout. 



Hab. Celebes. 



Description of a new Genus of Crustacea, of the Family Pinno- 

 theridse ; in which the fifth pair of legs' are reduced to an 

 almost imperceptible rudiment. By Thomas Bell, Esq., 

 Pres. L. S. 



[Read June 3rd, 1858.] 



Pam. PINNOTHEEID^, Edwards, 



Grenus Amokphopus, Bell. 



Chab. Gen. : — Corpus subcylindricum. Testa semicircularis, 

 margine posteriore recto. — AntenncB externcs minimcB, articulo 

 basali orbitam subtus partim claudente. — Antennularum fossulcd 

 transversse, continusB, et ab orbitis baud separatae. — Pedipalpi 

 externi articulo quarto ovato, palpo tri-articulato, ad angulum 

 antico-interiorem articuli quarti inserto. — Oris apertura antice 

 arcuata. — Orbited apertse, margine inferiore carente, superiore 

 integro. — Oculi transversim positi. — Pedes antici robusti, in- 

 sequales ; pedum paria secundum, tertium et quartum longa, sub- 

 compressa; pa/r quintum exiguum, simplicissimum, rudimen- 

 tarium, in incisura articuli basalis paris quarti insertum. — 

 Abdomen maris segmentis tertio cum quarto, et quinto cum 

 sexto coalitis ; Pcemin-s: ? 



Sp. unica. Amorphopus cylindraceus, mihi. 

 Description. — The body is nearly cylindrical, somewhat depressed, 



the carapace very much curved from the point to the back, quite 



