460 



broad 5th segment is narrowed distally, its posterior margin concave in 

 the distal part and serrate, the anterior margin bulged; the 6th segment is 

 narrow and curved. The 2nd segment of pereopods II is the same as in 



372 pereopods I; the 4th segment is wider than long; the distal process of the 

 5th segment forms the immovable part of the chela and extends slightly 

 beyond the base of the claw; both margins are denticulate, the ante- 

 rior one slightly concave; both margins of the 6th segment are convex, 

 the posterior margin, like the distal process, denticulate. Pereopods III 

 and IV are identical in structure; the 5th-6th segments have a denticu- 

 late posterior margin. The 2nd segment of pereopods V is oval, 1.5-1.8 

 times longer than wide, and the outer surface grooved in the anterior 

 part. The 2nd segment of pereopods VI is markedly broadened and 1.5 

 times longer than wide; the distal process of the 4th segment reaches the 

 middle of the 5th segment. 



The rami of uropods I are denticulate, slightly longer than the 

 basipodite, and lanceolate. The basipodite of uropods II is narrower; 

 the rami are shorter and their anterior margin denticulate only in the 



373 distal part. The basipodite of uropods III is wider than long; the rami 

 have a smooth anterior margin and a denticulate posterior margin. The 

 last urosomite narrows gradually, is 1.3-1.5 times longer than wide, and 

 has straight lateral margins. The telson is half the length of the last 

 urosomite, its length 1.5 times its width, and its tip may be slightly 

 rounded or pointed. 



Distribution: Known from the North (Bermuda Islands) and South 

 (south of 19° S, region of Lagos, tropical zone), Atlantic, Indian (Zanz- 

 ibar), and Pacific (northeastern Australia, northern New Zealand and 

 Kuroshio) oceans. 



2. Parapronoe parva Claus, 1879 (Fig. 200) 



Claus, 1879b: 31; 1887: 55; Stebbing, 1888: 1533 (Sympronoe); 

 Stephensen, 1925a: 162 (Sympronoe); Pirlot, 1930: 32 (Sympronoe). — 7- 

 articulata var. Stephensen, 1925a: 162 (Sympronoe). — septenarticulata 

 subsp. Pirlot, 1930: 33 (Sympronoe). — propinqua Stebbing, 1888: 1537 

 (Sympronoe). — anomala Shoemaker, 1925: 42 (Sympronoe). 



Length of adult females up to 8 mm, of males up to 7 mm. 



The 2nd segment of pereopods I is distally broadened and the ante- 

 rior margin more bulged than the posterior margin; the 4th segment is 

 twice wider in the distal part than in the proximal and somewhat wider 

 than its length, its posterior margin pectinate, and the denticles very 

 small; the 5th segment is narrower, almost 1.5 times longer than the 4th, 

 and has a bulged anterior margin and almost straight, finely denticulate 

 posterior margin; the 6th segment is somewhat shorter than the 5th and 

 twice as broad; the claw is short. The 2nd segment of pereopods II is 

 slightly longer than pereopods I and slightly broadened; the 4th segment 



