200 



168 



Fig. 80. Scina stenopus Stebbing (after Wagler, 1926). 



only slightly shorter than the 2nd segment; the shorter 5th and 6th seg- 

 ments are roughly equal. The 2nd segment of pereopods V is long, with 

 parallel margins bearing roughly equal, long, and slightly curved den- 

 ticles whose number varies markedly in different specimens; the distal 

 process is thin and long, with denticles on the anterior margin; the 4th 

 and 5th segments together are equal to the 2nd in length; the length ratios 

 of the 4th, 5th, and the particularly thin 6th segments are 10:7:4.5; the 

 claw is small and slightly curved. Pereopods VI are slightly shorter than 

 pereopods V; the length ratios of the 2nd, 4th, 5th, and 6th segments 

 are 26:10:6:6; the 6th segment is notably narrower than the preceding 

 ones. Pereopods VII are slightly shorter and thinner than pereopods VI; 

 the length ratios of the corresponding segments are 15:10:5:5; the claw 

 is very small and strongly curved at the tip. 



All the uropods are rod-shaped, equal in length, and equal to half 

 the length of antennae I; their basipodites are many times longer than the 

 rami; the exopodites of uropods I and II are reduced to small spines. All 

 three pairs of uropods on the anterior and posterior margins are deeply 

 denticulate or armed with long spines; only the anterior margin of the 

 basipodite and exopodite of uropods III is smooth. Uropods I and III are 

 distinctly triquetrous in cross section and clearly exhibit ornamentation 



