474 



long and may be up to half the length of the 6th segment along its 

 anterior margin. Pereopods II differ from pereopods I in a longer 2nd 

 segment and the absence of denticles on the posterior margin of the 5th 

 segment. Pereopods III and FV have long claws. The 2nd segment of 

 pereopods V is oval, its length almost twice its width; the 4th segment 

 is large and has bulged margins; the 5th segment is narrower than the 4th 

 and about half its length; the 6th segment is somewhat longer than the 

 4th; the 5th and 6th segments have a finely denticulate anterior margin; 

 the claw is long and thin. The 2nd segment of pereopods VI is oval and 



384 has a more bulged posterior margin; the 3rd-7th segments are the same 

 as in pereopods V but smaller; the 4th-6th segments have a denticulate 

 anterior margin. The 2nd segment of pereopods VII bulges more at the 

 posterior margin than the anterior and is 1.3-1.5 times longer than wide; 

 the distal segments together are shorter than half the length of the 2nd 

 segment. 



The basipodite of uropods I is long and straight and has slightly 

 bulged margins; the rami are 1/5-2/7 the length of the basipodite. The 

 basipodite of uropods II is half the length of that in uropods I and may 

 be denticulate in the distal part of the posterior margin; the endopodite is 

 only slightly shorter than the basipodite. The endopodite of uropods III 

 has a straight or bulged anterior margin and a bulged posterior margin. 



The last urosomite is somewhat wider than long. The triangular 

 telson is about equal in length to its width at the base and 2/3 the length 

 of the last urosomite. 



Distribution: A circumtropical species, it enters the Mediterranean 

 Sea; lives in the 0-500 m layer. 



385 2. Lycaeapauli Stebbing, 1888 (Fig. 206) 



Stebbing, 1888: 1566. 



Length of sexually mature crustaceans up to 7.5 mm. 



In antennae I of males the 1st segment has no posterior distal pro- 

 jection. Pereopods I and II differ from the same in L. pulex in that the 

 posterior margin of the 5th segment of pereopods I is smooth, and the dis- 

 tal process of the anterior margin of the 5th segment of both pereopods I 

 and II is uniformly denticulate and over a greater distance; the posterior 

 margin of the 6th segment is smooth. The claws of pereopods III and IV 

 are short. Pereopods V and VI are the same as in L. pulex but the claws 

 are shorter and in pereopods V the 5th and 6th segments have smooth 

 margins. In pereopods VII the distal segments together are longer than 

 half the 2nd segment. 



The last urosomite is much wider than long. The basipodite of 

 uropods I is twice as long as the rami. The basipodite of uropods II is 

 2/3 the length of that in uropods I; the endopodite is somewhat shorter 

 than the basipodite. The endopodite of uropods III has bulged margins 



