537 



Fig 231. Rhabdosoma armatum (Milne-Edwards) (after Pillai, 1966; Us of ^r^ — after Fage, 



1960). 



434 



roundish appendages, but sometimes the reduction is not that great and 

 the leg is three-to five-segmented; rarely, an asymmetry is discernible 

 in the development of the right and left limbs of this pair. Males have 

 three pairs of gills, located on somites IV-VI of the pereon. 



In adult individuals the pleon is shorter than the pereon, especially 

 in males; in younger individuals they are equal in length. The pleopods 

 are short and poorly developed. Urosomite II (geminate) is 1.5-2 times 

 longer than urosomite I. The uropods and telson are very long. Uropods I 

 extend far beyond the base of the telson; the endopodite is shorter and 

 narrower than the exopodite. Uropods II in adult crustaceans do not reach 

 the base of the telson. Uropods III are the longest (especially in females). 

 In uropods II-III the exopodites resemble short spiniform setae. The tel- 

 son in females is pointed and its length equal to the pereon and the 

 pleon together; in males it is blunt-tipped and about half the total length 



