408 



Fig. 176. Da/re//a ca///or«(ca (Bovallius) (after Bovallius, 1889). 



in a ventral view; somite I has a small fold on its anterior margin. 

 Somite III is shorter than the fused somites I and II and is equal to 

 somite IV; somites V and VI are slightly longer and somite VII is equal 

 to somite III. The 2nd segment of all the pereopods is narrow. In 

 pereopods I the 2nd segment is five times longer than wide and roughly 

 equal to the next three segments together; the 3rd segment is less in 

 length than width; the 4th segment is considerably longer than the 3rd; 

 the 5th segment is narrow, slightly more than half the length of the 2nd 

 segment, its posterior margin weakly incurved and with short, equidistant 

 spinules; the 6th segment is somewhat narrow, slightly more than half 

 the length of the 5th, gradually narrows distally, and with spinules on 

 the posterior margin; in the 2nd-6th segments the distal margin is finely 

 denticulate; the claw is almost straight, about 1/5 the length of the 6th 

 segment, and has five denticles at its base. Pereopods II are identical 

 to pereopods I but slightly longer; the 5th segment is 2/3 the length of 

 the 2nd segment; the 6th segment bears short sparse marginal spinules. 

 Pereopods III-IV are similar to the preceding two pairs but lack spinules; 



