STALK-EYED CRUSTACEA 387 



2. Mixtopag-urus. 



Mixtopagurus A. Milne Edwards, A. 



Milne Edwards and 

 Bouvier. 



Pylocheles Henderson. 



The carapace is that of Pagurus ; the gastric region is 

 hard, and the branchial regions are membranous. The 

 abdomen is curved, and more developed on the right side 

 than the left ; it is divided into seven very distinct 

 segments, articulated and mobile. The skin of the five 

 first are incompletely calcified ; the sixth is large and less 

 hard ; the last has a lamina, without transverse joint. The 

 appendages of the penultimate joint are large and 

 symmetrical. The first six segments have each a pair of 

 appendages. 



Range. — West Indian Sea ; in deep water. 



I. Mixtopagurus paradoxus. 



Mixtopagurus paradoxus ... A. Milne Edwards 



and Bouvier, A. 

 Agassiz. 



The carapace has some bunches of flexible and very 

 long hairs arranged along the edges and sutures. The 

 rostral point is very short, exposing the ophthalmic rings. 

 The eyes are as long as the two first joints of the internal 

 antennae ; the subantennary spine has some hairs and 

 spines. The first pair of legs small, thick, and equal. 

 The hand is very swollen, and covered, as well as the 

 movable fingers, with short and conical spines, between 

 which are fine, long yellow hairs. The extremities of the 

 fingers are brown and horny. The forearm has spines 



