183 



The pereopods are relatively short and strong. In pereopods I 2nd 

 segment is somewhat shorter than the 5th and 6th together; the 5th segment 

 is broad and finely denticulate in the distal part of the anterior and posterior 

 margins; the 6th segment is shorter than the 5th, denticulate on the posterior 

 margin and extended over the claw as a long acute spine almost equal in 

 length to the claw. In pereopods II and 2nd segment is somewhat longer 

 than in pereopods I and is also longer than the 5th and 6th segments 

 together; the 5th segment is almost equal in length to the 6th, broadened 

 distally, and denticulate in the distal half of the anterior margin; the 6th 

 segment is denticulate along the entire anterior margin and distal third of 

 the posterior margin, and extended over the claw as a small denticulate 

 spine equal roughly to 1/4 the length of the spine on the 6th segment 

 of pereopods I. Pereopods IE and IV are much longer and thinner than 

 pereopods I or II; their 4th segment is nearly the same length as the 5th 

 segment, which is only slighUy longer than the 6th; the claw is long, thin, 

 and curved. Pereopods V are only slightly longer than pereopods III and 

 IV; their broad 2nd segment is slightly denticulate on the anterior and 

 posterior margins and its distal process slightly curved; the 4th segment 

 is equal to the 5th, which is twice longer than the thinner 6th segment. 

 Pereopods VI and VII are strong with segments shorter and broader than 

 in pereopods V. Pereopods VII are somewhat shorter than pereopods VI; 

 the 5th segment of pereopods VI and VII is slightly longer than the 4th 

 and 6th segments; in pereopods VI the 4th segment is longer than the 6th 

 and in pereopods VII these segments are equal. The claws of the last three 

 pairs of pereopods are short, strong, and falcate; in pereopods V the claws 

 are weaker than in pereopods VI and VII. 

 155 The uropods are broad and fairly weakly armed. In uropods I the 



exopodite is reduced to a small spine; the endopodite is longer than the 

 basipodite; the anterior margin of the basipodite and endopodite is finely 

 denticulate. The posterior margin of uropods II at the level of attachment of 

 the exopodite is bent sharply so that the endopodite is tapered; its posterior 

 margin is denticulate. Uropods III are the thinnest of all the uropods, with a 

 well-developed lanceolate exopodite; the anterior margin of the endopodite 

 is strongly denticulate. The telson is small and triangular. 



Notes: The above description and illustration characterize sexually 

 mature animals. In sexually immature specimens the uropods are less 

 broad and may have a rather different ornamentation, for example iso- 

 lated strong spines on the posterior margin of the basipodite of uropods I. 

 The relative width of the segments of the pereopods changes with age 

 and varies according to sex. In addition, these changes are also subject 

 to strong individual variations. 



Distribution: This is a warm-water surface species known from dif- 

 ferent regions of the Atlantic Ocean (from 52° N, 15° W to 19° S, 



