STALK-EYED CRUSTACEA 437 



2. Panulirus americanus. 



Panulirus americanus . Spence Bate, Streets. 

 Palinurus ainericamis . H. Milne Edwards, Lamarck. 



The antennary segment is armed with four large 

 conical equidistant teeth forming a quadrangle. The 

 carapace is spinous all over. The posterior border of the 

 lateral horns of the abdominal segments armed with a 

 single tooth ; these segments have transverse grooves. 

 The basal joint of the internal antennae is very long, 

 reaching the middle of the last peduncular joint of the 

 external antennae. 



The colour is green, mixed with yellow-brown ; nut 

 brown on the sides, shading off to yellow below. There 

 are two orange bands and four yellow spots on each 

 abdominal segment. The frontal horns are marbled with 

 yellow and black. All the legs have longitudinal stripes, 

 on every joint, of nut brown and yellow. 



Range. — West Indies, Barbados, where they are 

 common, grow to a large size, and are good for food ; 

 Florida, Key West, Panama. 



3. Panulirus argus. 



Panulirus argus . . Spence Bate. 

 Palinurus argus . . H. Milne Edwards, Latreille, 

 Olivier, Lamarck, Desmarest. 



Antennary segment armed with four small conical 

 teeth scercely approximate on the median line, but the 

 two anterior are very distant from the two posterior. 

 Frontal horns very long. Carapace spinous ; the lateral 

 spines of the anterior border of moderate size ; a service 

 of small spines on the middle line of the gastric region. 

 Abdomen smooth, and presenting on each segment a 



