391 



The length of the head in females is 1/2, in males 5/8 of its height. In 

 females somites I-V of the pereon are fused and in males somites I-IV. 



The cone of the antennal gland in females is directed forward and 

 downward, covers the epistome and projects forward; its apex is rounded 

 and the lower edge is parallel to the body axis. The antennal gland in 

 males is stretched downward in the form of a round plate. 



The mandibles have eight denticles on the cutting edge. The outer 

 lobe of maxillae II has one subapical and two long apical spines; the 

 inner lobe has a short apical spine. 



The 2nd segment of pereopods I has a humped anterior margin; the 

 5th segment has one-two spines on the posterior margin and three spines 

 on the distal process; the 6th segment has one spine on the anterior 

 margin. The distal process of the 5th segment of pereopods II is some- 

 what less than half the length of the 6th segment and has seven marginal 

 spines. The 2nd segment of pereopods V-VII Is comparatively broad and 

 armed with two-four spines on the anterior margin; the 5th and 6th seg- 

 ments have a row of minute thin setae on the anterior margin. The claw 

 of pereopods V is almost the same length as the claw of pereopods VI 

 and VII. The 6th segment of pereopods VI and VII has a spine on the 

 distal margin. The telson in females is somewhat longer than half, in 

 males less than half the length of the basipodite of uropods III. 



Notes: The species is quite variable and the possibility is not 

 excluded that the present collections comprise several independent 

 species. In fact, those specimens which distinctly differ in ornamentation 

 of the pereopods but have five (female) or four (male) fused somites of 

 the pereon are now affiliated to L. bengalensis. 



Distribution: A circumtropical surfacial species moving into the 

 coastal waters of continents or oceanic islands but also found in the 

 central regions of tropical gyzes. 



11. Genus Hyperietta Bowman, 1973 



Bowman, 1973: 55. 



Minute species (2-5 mm) in which the body is highly flattened lat- 

 erally. The head is quite short and the eyes occupy a major part of 

 its surface. Somites I and II of the pereon are fused in both sexes. In 

 females antennae I are two-segmented, antennae II one-segmented, and 

 both rudimentary. The mandibles have a smooth cutting edge and a nar- 

 row dentate process; in females the palp is absent. The outer lobe* of 

 maxillae I has three terminal spines. In the maxillipeds the outer lobes 

 are fused medially and the inner lobes are rudimentary. The coxal plates 

 are fused" with the somites of the pereon. Pereopods I are simple and 



Changed from Russian original by authors — ^Eds. 



