STALK-EYED CRUSTACEA 179 



fourth joint has in front two spines and some spinules. 

 A very short and flat spine exists on the extremity of 

 the posterior border. The fifth joint has two spines, one 

 inside, the other outside ; also it is provided with strong 

 parallel ridges, of which three occupy the external face, 

 and one the superior face of this joint. The hand has 

 three spines, one above the articulation with fifth joint, the 

 second above the base of the movable finger, and the 

 third about the anterior third of the superior border. The 

 walking legs are short. The fourth joint of the last pair 

 has no spines. The sternal plastron has a long depression 

 on each side of its joints. 

 Range. — Guadaloupe. 



5. Neptunus (Amphitrite) sulcatus. 



Neptunus sulcatus . . A. Milne Edwards. 



Resembles Neptunus {AnipJiitrite) ve)itralis in the 

 general form of the carapace, the arrangement of the 

 frontal teeth, and those of the antero-lateral border ; but 

 the grooves which separate the lobes of the carapace are 

 deeper, and the sternal plastron is completely smooth. 



The walking legs are relatively very long. 



Range. — Guadaloupe ; in deep water. 



6. Neptunus (Amphitrite) sebae. 



Neptunus sebcz H. Milne Edwards, A. 



Milne Edwards. 

 Cancer marinis scutiforuiis . . Seba. 

 Lupa sebce . . H. Milne Edwards, 



Carapace hexagonal, almost flat, marked with a few 

 granulations upon the gastric and hepatic regions. 

 Epigastric and epibranchial lines slightly projecting. On 



