202 



Fig. 81. Scina tullbergi (Bovallius) (after Wagler, 1926). 

 Variations in structure of the pereopods and uropods. 



170 



are noticeably shorter than pereopods V; their 4th segment is consider- 

 ably smaller, sometimes less than half the length of the 2nd segment, and 

 equal to or somewhat shorter than the 5th; the 6th segment is insignif- 

 icantly shorter than or equal to the 5th segment; the claw is long and 

 slightly curved. Pereopods VII are weak and short; the 4th and 5th seg- 

 ments together are equal to the 2nd in length; the 6th segment is shorter 

 than the 5th; the claw is large, strong, with a broad base and bent tip. 



