ON THE COAST OF COENWALL. 



147 



shorter than both ; divided near the tip, and the (slightly) longer 

 branch having a scarcely perceptible brush. Both pairs of an- 

 tennae are directed straight forward ; but when alive, it is probable 

 that, together with the eyes, they possess extensive motion. 



The second or posterior carapace, called by Dr. Milne Edwards 

 the thorax, is less than the former, but equally thin and transpa- 

 rent, and near its border carries the coxso, or insertion of the 

 proper legs. Posteriorly it has attached to it the abdomen, ter- 

 minating in two long, bifid processes. I count 4 rings on the 

 abdominal portion, and there are probably 5 ; under these are 4 

 oval plates, perhaps in pairs. Lateral plates of the tail, oval ; the 

 central less distinct and not quite so long: legs long, slender, 

 four pair, bifurcate at the second joint ; the posterior bifurcation 

 scarcely longer than the second phalanx ; the first and last pair 

 having this part rather longer than the two intermediate ones. 

 AU of them (the principal branches and bifurcations) simple, 

 pointed, clothed with hairs toward the end. 



CO- 



Antennae, 



Under. 



Side. 



Fhyllosoma commune, taken near Polperro, August 1, 1857, in a pilchard drift- 

 net, four leagues from land and three fathoms fi-om the sm-face. 



The eyes are the only parts that can be said to possess colour, 



