72 Mr. C. Spence Bate on a new Genus of Macrura. 



hairs stand at the dactyloid articuhition and reach beyond the 

 extremity of the dactylos, which is formed like the pollex and 

 tipped with three straight, stiff, and ciliated hairs. 



The second, third, and fourth pairs resemble the first, 

 being perhaps rather more slender; and the fifth pair (o) are still 

 shorter and differ from the preceding chiefly in terminating 

 in a non-chelate extremity free from hairs, excepting a simple 

 one on the dactylos, a ciliated one on the carpus, and another 

 on the meros. 



The pleopoda are short and feeble and have not been 

 properly examined. 



The branchial plumes are numerous, but in consequence 

 of having been preserved in a desiccated condition they 

 are not capable of being carefully noted ; but there appears 

 to be a series of arthrobranchiai and pleurobranchiae, which 

 probably may be arranged as follows : — 



Pleurobranchife 1111 



Arthrobranchise 222 2 



Podobrauchiae 1 1 1 1 1 1 



Mastigobrauckise ;• r r r 



h i k I m n o 



millim. 

 Length of the animal from the rostrum to the posterior 



extremity of the carapace 9 



Length of the pleou 6 



Breadth of carapace about 6 



Length of ophthalmopod 



,, ,, first antenna 4 



,, ,, second antenna to extremity of scaphocerite. 4 



,, „ iiagellum, broken ? 9 



„ „ mandible, dissected out 5 



,, ,, synaphipod 2 



„ ,, first gnathopod 6 



„ „ second ,, 9 



„ „ third pereiopod 5 



„ „ ,, ,, basecphysis of 5 



„ „ fifth „ _ 3 



„ „ „ „ basecphysis of 3 



The general aspect of the animal to casual observation is 

 more that of a Crustacean belonging to the Brachyura than 

 to one of the Macrurous division. 



The broad and quadrate character of the carapace and the 

 narrow and folded condition of the pleon are features of the 

 Brachyura type ; but, on the other hand, the long and 

 sweeping branches (ecphyses) attached to the ambulatory legs, 

 which are themselves apparently too short and feeble to be of 

 much use, and the imperfect conditionof the chelate appendages. 



