58 STALK-EYED CRUSTACEA 



border has two teeth, one superior, the other lateral. The 

 basal joint of the external antennae has three spines ; the 

 largest at the antero - external angle, the next at the 

 inferior and internal angle, and the third, the smallest, 

 between these two ; the second and third joints are 

 cylindrical. 



The first pair of legs of the female is scarcely longer 

 than the second pair. The hand is smooth ; the fingers 

 are acute. The arm and forearm have pointed tubercles. 

 The walking legs are smooth. The sternal plastron, in 

 the female, is oval. 



Range. — Barbados. 



2. Temnonotus simplex. 



TcDiiwnotus simplex . . A. Milne Edwards. 



The carapace has no interorbital groove ; the branchio- 

 hepatic groove is wide and deep ; the branchial regions 

 have many spines ; the edges of the trench circumscribing 

 the anterior cardiac lobe have no projecting ridge, and 

 the circumscribed lobe is prominent and smooth. The 

 basal joint of the external antennae has only a small spine 

 at its antero-external angle. 



Range. — Barbados. 



Family III. Periceridae. 



Pericei'idce Miers. 



Maiens crypiophthabiics (part) . H. Milne Edwards. 



Eyes retractile within the small circular and well- 

 defined orbits, which are never incomplete. Basal joint 

 of external antennae well developed, and constituting the 

 greater portion of the inferior wall of the orbit ; this joint 

 is usually very considerably enlarged. 



