Fi g- 23. 
261 
Fig. 23. 
« 24. 
Fig. 25. 
n 26. 
27. 
Fig. l. 
» 2 . 
» 3. 
» 4. 
» 5. 
n 6. 
i) 7. 
» 8. 
» 9. 
« 10 . 
>> 11 . 
n 12. 
» 13. 
» 14. 
>i 15. 
n 16. 
» 17. 
» 18. 
n 19. 
V 2 0-. 
» 21. 
Fig. 22. 
Enden af Bagkroppen med det midterste Hale- 
vedhaeng og det venstre ydre Halevedhaeng , 
seet ovenfra. 
Fig. 
22 . 
Anceus hirsutus, G. 0. Sars. 
Slaegtsmoden Han seet ovenfra. 
Enden af Bagkroppen med det midterste Hale- 
vedhaeng. 
Fig. 
23. 
24. 
Anceus robust, us, G-. 0. Sars. 
Slaegtsmoden Han seet ovenfra. 
Sidste Bagkropssegment med det midterste Hale- 
vedhaeng ovenfra. 
HSldre Larve seet ovenfra. 
Fig. 
25. 
26. 
27. 
PI. IX. 
Ardurus baffini, Sowb. 
Higbserende Hun seet ovenfra, svagt forstorret. 
Fig. 1. 
Samme fra venstre Side. 
Den forreste Del af Legemet med lste Pai 
Folei'e og Munddelene, stserkere forstOrret, seet 
nedenfra. 
Foler af lste Par. 
To af do paa samme faestede Sandsevedhseng 
stserkt forstorrede. 
Basis af on af 2det Par Folere. 
Endedelen (Svoben) af samme Foler. 
Overlseben. 
Underlaeben. 
Kindbakkerne. 
Kjseve af lste Par. 
Kjseve af 2det Par. 
En af Kjasvefodderne. 
Fod af lste Par. 
Fod af 2det Par. 
Fod af 7de Par. 
Erulekloon af samme stmrkere forstorret. 
Bagkroppen seet nedenfra. Et af do klapformige 
Halevedhaeng er borttaget for at vise de under 
samme liggende Pleopoder. 
En af de forreste Pleopoder. 
En af de bagerste Pleopoder (Gjeller). 
Spidsen af et af de klapformige Halevedhaeng 
seet fra den indre Side, visende de to rudi- 
mentaere Endegrene. 
5 ? 
2 . 
3. 
ii 
4. 
5. 
ii 
ii 
ii 
ii 
ii 
ii 
ii 
ii 
ii 
ii 
ii 
n 
ii 
6 . 
7. 
8 . 
9. 
10 . 
11 . 
12 . 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
20 . 
21 . 
Ardurus tuber osm, G. 0. Sars. 
Hun seet fra venstre Side. 
Extremity of posterior division of body, with 
median caudal appendage and lett outer caudal 
appendage, viewed from above. 
Anceus hirsutus, G. 0. Sars. 
Sexually mature male, viewed from above. 
Extremity of posterior division of body, with 
median caudal appendage. 
Anceus robustus, G. 0. Sars. 
Sexually mature male, viewed from above. 
Last abdominal segment, with median caudal 
appendage, from above. 
Larva, in advanced stage of development, viewed 
from above. 
PI. IX. 
Ardurus baffini, Sowb. 
Ovigerous female, viewed from above, very 
slightly magnified. 
Same animal, from lett side. 
Anterior part of body, with 1st pair of antennae 
and oral appendages, viewed from below, moie 
highly magnified. 
Antenna of 1 st pair. 
Two of the sensory appendices on same antenna, 
highly magnified. 
Base of antenna of 2nd pair. 
Terminal part (flagellum) of same antenna. 
Labrum. 
Labium. 
Mandibles. 
Maxilla of 1st pair. 
Maxilla of 2nd pair. 
A maxilliped. 
Leg of 1st pair. 
Leg of 2nd pair. 
Leg of 7th pair. 
Terminal claw of same leg, considerably magnified. 
Posterior division of body, viewed from below. 
One of the valvular caudal appendages removed, 
to show the pleopods beneath it. 
One of the anterior pleopods. 
One of the posterior pleopods (branchiae). 
Point of a valvular caudal appendage, viewed 
from inner side, showing the two rudimentary 
terminal branches. , 
Fig. 22. 
Ardurus tuberosus, G. 0. Sars. 
Female, viewed from lett side. 
