98 



segments are armed on the posterior margin with short strong setae, while 

 the 2nci, 5th, and 6th segments bear such setae on the distal surface also. 

 The nearly linear 5th segment of pereopods II is slightly shorter than 

 the narrowly conical 6th; together they are slightly shorter than the 2nd 

 segment. Pereopods III and IV are similar' in structure; their 3rd, 4th and 

 5th segments are flat, highly broadened distally, so that the maximum 

 width of the 4th segment is only slightly less than its length while that 

 of the 5th segment is 2/3 its length; the conical, distally sharply tapering 

 6th segment is equal to the 5th in length; the claw is very small, slightly 

 curved, and retractile. 



All the segments of pereopods V are even more broadened and flat- 

 tened; the 2nd-4th segments are broadened distally; the 4th is particularly 

 more sharply broadened, triangular, its maximum width more than its 

 length; the 5th segment is only slightly less wide than long, with a depres- 

 sion in the lower posterior part into which fits the posterior proximal part 

 of the 6th segment; the 6th segment is oval, sharply narrows distally, and 

 2/3 the length of the 5th segment; the claw is very small and retractile. 

 Pereopods VI and VII are structured as in the Lanceola; their 2nd segment 

 in the proximal part of the anterior margin has a small prominence, as 

 in M. stephi^nseni. The uropods have highly denticulate rami. The telson 

 reaches the distal end of the basipodite of uropods III. 



Distribution: Known from two records-in the South Atlantic 

 (4r43'S, 42°20' W) and in the Indian Ocean (3° 11' N, 67°02' E) from 

 the total catches at depths of over 2,000 m to the surface. 



4. Genus Metalanceola Pirlot, 1931 



Pirlot, 1931: 1. 



Medium-sized crustaceans. In females the pereon bulges markedly. 

 The integument is thin and transparent. The head is shorter than somite I 

 of the pereon. The eyes are roundish and very small. 



In antennae I the peduncle consists of short broad segments; in the 

 flagellum the proximal segment is broadly conical and weakly pubescent; 

 the distal segments are better developed than in other lanceolids, their 

 total length 2/5-1/2 the length of the proximal segments. Antennae II 

 are shorter than antennae I; in males the segments of the flagellum are 

 rod- shaped. 



The mandibles have a broad cutting edge; the 3rd segment of the 

 mandibular palp is slightly longer than the 2nd. The palp of maxillae I, 

 unlike in other genera of the family, is significantly shorter than the outer 

 lobe; the inner lobe is small. The inner lobe of the maxillipeds is reduced 

 to a small prominence. The spoon-shaped formation on the tip of the 6th 



changed from Russian text by authors-Eds. 



