374 



pair VI in structure but shorter. Epimerons I-III have a slanted keel; the 

 posterior lower angle of epimeron III is stretched into a long acute lobe 

 directed backward. 



The uropods have a short broad peduncle and lanceolate rami, which 

 are narrow in I and II and broad in III. The telson is galeiform, with 

 an acute apex extending almost to the distal end of the penduncle of 

 uropods III. 



Live specimens are blackish-violet, the eyes black with a yellow or 

 white broad rim. 



Distribution: Southeastern Atlantic (33° 07' S., 4° 30' E.), the 

 Antarctic (63°51' S, 54° 16' E); 13° 35' N, 101 °45' E, Pacific (north- 

 central waters and 13°33 N 101 °45' W). 



305 8. Genus Bougisia Laval, 1966 



Laval, 1966: 217. 



The width of the pereon is more than its height. Somites I and II 

 of the pereon are fused. The head has a rostrum and a well-developed 

 narrow interantennal lobe, the small, highly pigmented eyes are situated 

 laterally on the head. The mandibles have a palp in both sexes as well as a 

 strong dentate process. The outer lobe of maxillae I has two apical spines. 

 The maxillipeds have rudimentary inner lobes. The coxal plates are free. 

 Pereopods I and II have a subchela; pereopods III-VII are approximately 

 identical in length; pereopods V have a distally broadened 2nd segment. 



Type species: Bougisia ornata Laval, 1966. 



In structure of the head and especially of the eyes, as well as the 

 unique alveolate structure of the integument, Bougisia resembles some 

 hyperiideans of Physosomata from the superfamily Lanceoloidea. How- 

 e\ er, the structure of the antennae, the oral appendages, and the pere- 

 opods undoubtedly indicates the affinity of this genus to the family 

 Hyperiidae. In some characters (presence of an interantennal lobe, com- 

 pact integument) Bougisia is closer to Pegohyperia, but in the structure 

 of the oral appendages (except for the mandibles) and the pereopods, it 

 is closer to Hyperia or lulopis. However, Laval is inclined to consider 

 this similarity as convergent, because ecologically Bougisia is very close 

 to Hyperia, which probably accounts for the morphological similarity 

 among their representatives. 



1. Bougisia ornata Laval, 1966 (Fig. 159) 



Laval, 1966: 210. 



Length of sexually mature specimens 3-4 mm. 



The pereon is broader than the head and the pleon is somewhat 

 longer than the pereon. Urosomites II and III are fused. The head is 

 somewhat shorter than the first two somites of the pereon, its upper side 



