432 STALK-EYED CRUSTACEA 



I. Scyllarus squamosus. 



Scyllariis squamosus . . H. Milne Edv/ards. 



The tubercles on the upper surface, broad, are only 

 fringed with hairs, and are scale-like. There are no points 

 upon the gastric region. The third and fourth joint of the 

 legs, in place of having a simple crest upon their upper 

 surface as usual, are cut into longitudinal grooves. The 

 tubercles upon the sternum are scarcely visible. Colour 

 red-brown. 



Range. — West Indies, Isle of France. 



2. Scyllarus sequinoxialis. 



Scyllarus (Equinoxialis . . Fabricius, Bosc, Latreille, 



H. Milne Edwards. 



The tubercles upon the upper surface are scarcely 

 hairy. There are no conical teeth upon the gastric region. 

 The lateral edges of the carapace have obtuse teeth. The 

 external antennae are short ; their penultimate and anti- 

 penultimate joint are wider than long, and their teeth are 

 not very prominent. The third and fourth joint of the 

 legs are crested above, and are not cut into longitudinal 

 grooves. Colour brown, with orange-red marks. 



Range. — West Indies, Barbados. 



3. Arctus. 



Arctus Dana, A. Milne Edwards, Spence 



Bate. 

 Scyllarus (part) . Fabricius, De Haan, Spence Bate. 



The carapace is longer than wide, with the lateral 

 edges parallel. The orbits are situated at some distance 



