379 



309 



pereopods V and VI but the distal segments (4th-5th) are shorter, due to 

 which pereopods VII are significantly shorter than pereopods V or VI. 



The rami of the uropods are narrowly lanceolate and the exopodites 

 denticulate along the anterior margin. The rami of uropods I are approxi- 

 mately equal to the peduncle in length but in uropods II and III somewhat 

 smaller; the peduncle is half as wide as long. The telson is semicircular, 

 its length less than its width at the base. 



Distribution: A circumoceanic warm-water species. It occurs in the 

 Atlantic Ocean northward up to Ireland and southward to 37° 30' S in 

 the Mediterranean Sea, and tropical regions of the Indian Ocean. It is 

 found in the Pacific Ocean from 40° N to 51° S. The species inhabits the 

 waters of epi- and partly mesopelagic layers from the surface to depths 

 of 200-300 m, but smme individuals are also found in deeper waters, up 

 to 500-600 m. 



pIpmAI fp, () tp, \(^j%J 



Fig. 161. Hyperioides sibaginis (Stebbing), female (after Bowman, 1973). 



