Mr. Templeton on some undescrihed exotic Crustacea. 185 



XLI. Descrij^tioiis of some undescrihed exotic Crustacea. 

 By Robert Templeton, Esq., R.^., Sfc. 



[Read 1st June, 1835.] 



The following pages contain notices of a few of the minuter Crus- 

 tacea which were picked up either at Mauritius or on the way 

 thither ; they are interesting from their either presenting new forms, 

 or adding species to those genera of which European species alone 

 have been yet detected. A considerable number yet remain unex- 

 amined, which I hoj)e will prove sufliciently interesting to form the 

 subject of another memoir. 



Artillery Barracks, Woolwich, 

 May, 1835. 



Anisopus dubius. pi. XX, fig. 1, 



Greenish, dotted over with reddish brown specks. Head large, 

 subquadrangular, carrying 4 antennae, the superior nearly as long 

 as the body, and exceeding in length by about one fifth part the in- 

 ferior ; the 1st joint is minute, the 2nd large and thick, the 3rd elon- 

 gate, nearly cylindric, and wanting the little process which charac- 

 terizes the true Gammari, 4th joint multiarticulate, tapering. The 

 inferior antenna has the 2nd and 3rd joints, subequal, much longer 

 than any of those of the superior, and the remaining similar, but of 

 smaller dimensions. Both antennje are spiny or hairy. The tho- 

 racic rings are narrow, and extend inferiorly into j^lates concealing 

 the upper part of the 5 anterior pairs of legs. Those of the abdo- 

 men are much larger and end in a 4-articulated tail, with a jointed 

 stylet on each side proceeding from the inferior posterior angle of 

 the ultimate and penultimate articulations. The first pair of legs is 

 extremely minute and terminates in a simple claw, the 2nd much 

 longer, as are the 3 succeeding pairs, and terminates in joints 

 slightly dilated, the last carrying a tolerably strong curved claw. 

 The 3rd pair has the last joint very much dilated, subtriangular, not 

 toothed, but bearing a very strong curved claw ; the posterior edge 

 is waved and hairy. The 2 succeeding pairs of legs resemble the 

 1st pair except in their greater size ; but the 6th and 7th pairs, of 

 nearly equal dimensions, exceed all the anterior legs in being both 

 much longer and much more robust, and besides differ in having the 

 coxae very much dilated, and the last joint of each leg clavated, sur- 

 mounted by two blunt teeth, and a large dentuted curved claw di- 



