242 



— Size of adults exceeds 5 mm 7. 



6. Eyes comprise three rows of separate ocelli. Flagellum of antennae I 

 slightly broadened, gradually tapering toward apex which is shifted 

 toward lower margin. Antennae II very short, not longer than base 

 of antennae I and comprise 2-4 segments 10. V. australis Stebb. 



— Eyes compact. Flagellum of antennae I highly broadened, with par- 

 allel upper and lower margins, anteriorly obliquely truncate, apex 

 shifted toward upper margin. Antennae II with 6-8 segments and 



comparable in length to antennae I 



3. V. stebbingi Behn. and Wolt. 



7. Sexually mature adults more than 15 mm. Second segment of pere- 

 opods I broadened, oval 6. V. robusta Bov. 



— Sexually mature adults less than 15 mm. Second segment of pere- 

 opods I not broadened, but if broadened, just slightly so 8. 



8. Frontal part of head forming round projection (very prominent in 

 males) above base of antennae I, length of which approximately equal 



to head and first two somites of pereon 



8. V. borealis Bate and Westwood. 



— Frontal part of head in females inclined toward base of antennae I, 

 in males rounded but without noticeable projection. Antennae I not 

 longer than head and 1st somite of pereon together 9. 



9. Length of claws of pereopods V-VI less than 1/4 length of preceding 

 segment 1 . V. jeangerardi Lucas 



— Length of claws of pereopods V-VI about 1/3 length of preceding 

 segment 10. 



10. Body highly chitinized. Eyes of females occupy about 1/3 lateral 

 surface of head. Base of antennae I massive and not less than 1st 

 segment of flagellum in height. Basipodite of uropods I twice longer 

 than rami; endopodite of uropods III in male broadened and longer 

 than exopodite by 1/3 its length 5. V. propinqua Stebb. 



— Body weakly chitinized. Eyes of females occupy not more than 1/4 

 lateral surface of head. Height of basal part of antennae I consider- 

 ably less than height of flagellum. Basipodite of uropods I, 1 .5 times 

 longer than rami; endopodite of uropods III in both sexes almost not 



distinguishable from expedite in shape and length 



l.V. gibbosa Bov. 



1 1 . Antennae I longer than head and first two somites of pereon 

 together 17. V. ajfinis Bate 



— Antennae I not longer than head and first two somites of pereon 

 together 12. 



12. Pereopods II simple, without chela 16. V, bovallii Bonnier 



— Pereopods II with chela 13. 



13. Basipodite of uropods III longer than exopodite 14. 



