471 



The coxal plates are not fused with the somites of the pereon. Pere- 

 opods I are simple or have a subchela. Pereopods II have a subchela 

 with finely denticulate or smooth margins. The 2nd segment of pere- 

 opods V-VII is broadened but not operculiform and the distal segments 

 are articulated with it apically. The 2nd segment of pereopods V and VI 

 is much shorter than the distal segments. Pereopods VII have four-five 

 rudimentary distal segments. 



The telson is fused with the last urosomite. The endopodite of 

 uropods III is fused with the basipodite; such a fusion is sometimes 

 seen in uropods II also. 



The family includes two genera. 



KEY TO GENERA OF FAMILY LYCAEI DAE 



1. Pereopods I simple. Distal margin of 5th segment of pereopods II 



approximately half length of the segment 



2. Simorhynchotus Stebb. 



2. Pereopods I with subchela. Distal margin of 5th segment of pere- 

 opods II not shorter than segment 1 . Lycaea Dana. 



1. Genus Lycaea Dana, 1852 



Dana, 1852: 1017; Glaus, 1879b: 37; 1887: 61; Stebbing, 1888: 

 1563; Spandl, 1924: 30; Chevreux and Page, 1925: 429; Stephensen, 

 1925a: 167; Bowman and Gruner, 1973: 46. — Metalycaea Stephensen, 

 1925a: 183. 



The head is large and higher in females than in males. The pereon 

 is longer than the pleon. Somites I and II of the pereon are narrower 

 than the next ones. The posterior distal projection of the 5th segment 

 of pereopods I is more or less developed. The 5th and 6th segments 

 of pereopods VI have a denticulate anterior margin. The 2nd segment 

 of pereopods VII is strongly broadened and relatively somewhat shorter 

 than in pereopods VI; the distal segments are rudimentary and together 

 are always much shorter than the 2nd segment. 



The basipodite of uropods I is straight, almost linear, not less than 

 twice the length of the rami, and its anterior margin is finely dentic- 

 ulate throughout most of its length; the rami are equal in length. The 

 endopodite of uropods II is longer than the exopodite; in L. nasuta it 

 is fused with the basipodite. The endopodite of uropods III is always 

 fused with the basipodite, its tip reaching the tip of the telson or slightly 

 beyond it. The telson has a rounded tip. 



Type species: Lycaea ochracea Dana, 1853. 



