243 



— Basipodite of uropods III shorter than exopodite or equal in length . . 

 15. 



14. Second segment of pereopods VII longer than remaining part of leg. 

 Process of 5 th segment of pereopods II reaching middle of 6th seg- 

 ment. Flagellum of antennae I with parallel upper and lower margins 

 and obliquely truncate anteriorly 9. V. chuni Behn and Wolt. 



202 — Flagellum of antennae I elongated-lanceolate, almost rhombic, with 

 acute apex. Process of 5th segment of pereopods II reaches base 

 of claw; 2nd segment of pereopods VII considerably shorter than 

 remaining part of leg ! 12. V. armata Bov. 



15. Length of antennae I equal to length of head and somite I of pereon. 

 Process of 5th segment of pereopods II extends beyond middle of 6th 

 segment, often reaching base of claw; anterior distal angle of 5th-6th 

 segments of pereopods VII forms round projection 16. 



— Antennae I longer than head and somite I of pereon. Process of 5th 

 segment of pereopods II not extending beyond middle of 6th seg- 

 ment; anterior distal angle of 5th-6th segments of pereopods VII does 

 not form projection 15. V. pyripes Bov. 



16. Distal segment of pereopods VII has characteristic knife shape with 

 acute apex 13. V. cultripes Voss. 



— Distal segment of pereopods VII finger-shaped, with round apex . . . 

 14. V. longicarpus Behn. 



1. Vibilia jeangerardi LucsLS, 1845 (Fig. 101) 



Lucas, 1845: 56; Bovallius, 1887b: 47; Chevreux, 1900: 125; Behn- 

 ing, 1912: 212; Chevreux and Fage, 1925: 3S3.—speciosa Costa, 1853: 

 61. — mediterranea Claus, 1872: 335. 



Length of adult crustacean up to 11 mm. 



The body is cylindrical with a thick integument. The height of the 

 head slightly exceeds the length; the rostrum is very short. The eyes are 

 very dark and small; in males they are larger than in females, oblong- 

 oval, broadened above; the peripheral ocelli are larger than the inner 

 ocelli, antennae I have a massive base, the basal segment being longer 

 than the remaining two segments together. The 1st segment of the flag- 

 ellum is very broad, bulging, oval, twice as long as the base; two- 

 three rudimentary segments are present apically, well discernible only 

 in young individuals. Antennae II of females are five-segmented and 

 shorter than antennae I, of males seven- to nine-segmented and the same 

 length as antennae I or slightly longer; the 3rd-4th antennal segments 

 are the longest, the distal segments short, equal in length, and with fine 

 setae. 



Somite I of the pereon is shorter than somite E; somite V is the 

 longest. The lower posterior angle of the 4th segment of pereopods I 

 projects weakly; the process of this segment does not reach the middle 



