360 



294 



Fig. 150. Parathemisto (Parathemisto) abyssorum Boeck, female (after Barnard, 1959). 



294 



segment and apically bearing a few long setae; the 6th segment has a 

 finely denticulate posterior margin; the claw is straight and smooth. In 

 pereopods III and IV the 4th segment is identical in structure and slightly 

 broadens distally; it is 1/2-2/3 the length of the narrowly oval, almost 

 linear 5th segment; the 6th segment of pereopods III is 1.2-1.5 times 

 longer than the 5th but in pereopods IV almost equal to the 5th segment; 

 the claws are long and smooth. Pereopods V-VII are similar in structure 

 and almost equal in length; the 4th segment is approximately half the 

 length of the linear 5th segment, which in turn is about 2/3 the length 

 of the much thinner 6th segment; the claws are thin, almost straight 

 and smooth, and 2/7-2/5 the length of the 6th segment. The anterior 

 margin of the 5th and 6th segments of pereopods V is smooth while in 

 pereopods VI and VII it is pubescent with short and tender setae. 



The basipodites of all the uropods are considerably longer than the 

 rami; the outer margin of the rami is smooth and the inner margin finely 

 denticulate. The oval-triangular telson has an acute apex, is 1/3 the length 

 of the basipodite of uropods III, and slightly longer than its own width 

 at the base. 



