444 



length 1 .2 times its width, the margins denticulate or the anterior margin 

 in the distal part may have some uneven denticles; the 4th segment in 

 length and.width is only slightly smaller than the 2nd, its anterior margin 

 and sometimes the posterior margin may be sparsely denticulate; the 5th 

 and 6th segments are usual in shape, with a denticulate anterior margin; 

 the claw is short, often with a split apex. In females pereopods VI are 

 usual in structure; the 2nd segment is oval; the 4th-6th segments are 

 almost linear; the claw may also be split; the anterior margin of the 2nd 

 and 4th-6th segments have sparse uneven denticles. Pereopods VII in 

 males consist of a thin 2nd segment and the 3rd-(-7th segments together 

 are much longer than it; in females the 2nd segment has bulged margins 

 and is sometimes oval; the distal segments together are equal in length 

 to the 2nd segment or slightly longer than it. 



The rami of all uropods are lanceoloate and denticulate. The telson 

 has bulged margins, a rounded tip, and is approximately half the length 

 of the last urosomite; the length and width of the last somite are almost 

 equal. 



The species is known from the tropical zone of the Atlantic, Indian, 

 and Pacific oceans, and from the Mediterranean and Red seas. It inhabits 

 the upper layers of the pelagic. Fairly rare. 



2. Lycaeopsis zamboangae (Stebbing, 1888) (Fig. 193) 



Stebbing, 1888: 1452 (Phorcorrhaphis); Chevreux, 1900: 148 (Phor- 

 corrhaphis); 1913: 22; Spandl, 1924: ll.—neglecta Pirlot, 1929: 144. 



Length of adult specimens up to 5 mm. 



This species is close to L. themistoides but the males exhibit several 

 significant structural differences: the posterior margin of the 2nd segment 

 of pereopods VI is not medially concave and the 5th segment has bulged 

 margins. The last urosomite is approximately 1 .2 times longer than wide. 

 The endopodite of uropods III is not lanceolate and has a characteristic 

 notch in the anterior margin. The telson is bottle- shaped; thus its margins 

 are bulged near the base and curved in the distal part. 



Distribution: Known from the Pacific Ocean (Kuroshio, the Philip- 

 pines) and the Red Sea. It inhabits the upper layer of the pelagic. It is 

 very rare in catches. 



SUPERFAMILY FLATYSCELOmEA BATE, 1862 



Antennae originate from the ventral part of the head. Antennae I, have 

 a large in males-curved basal segment of the flagellum, with which a 

 small number of distal segments articulate, most often subterminally. 

 Antennae II in males consist of five highly elongated segments (three- 

 segmented base and two-segmented flagellum), set zigzag. Antennae 11 



