262 
Fig. 23. 
„ 24. 
„ 25. 
„ 26. 
Fig. 
3? 
J? 
3? 
33 
33 
33 
33 
27. 
28. 
29. 
30. 
31. 
32. 
33. 
34. 
33 
35. 
Fig. 
•5? 
33 
33 
5? 
33 
5? 
33 
33 
33 
33 
33 
33 
1 . 
2 . 
3. 
4. 
5. 
6 . 
7. 
8. 
9. 
10 . 
11 . 
12 . 
13. 
14. 
15. 
16. 
17. 
33 
33 
33 
33 
>5 
>3 
18. 
19. 
20 . 
21 . 
22 . 
23. 
Fig. 
24. 
25. 
Ardurus hystrix, GT. 0. Sars. 
iEgbaerende Hun seet ovenfra. 
Samme fra venstre Side. 
Foler af lste Par. 
Endedelen (Svoben) af en Foler af 2det Par. 
• 
Astacilla granulata, G. O. Sars. 
Higbserende Hun seet ovenfra. 
Samme fra ho ire Side. 
Foler af lste Par. 
Endedelen af en Faler af 2det Par. 
Fod af lste Par. 
Slsegtsmoden Han seet fra hoi re Side. 
En af sammes Folere af lste Par. 
lste Par Pleopoder tilbgemed de foran samme 
beliggende ydre Kjonsvedhmng. 
En al 2det Par Pleopoder hos samme. 
PI. X. 
Glyptonotus megalurus, (G. 0. Sars). 
Han seet ovenfra, svagt forstorret. 
Samme nedenfra. 
F (tier af lste Par. 
Spidsen af samme stserkere forstorret. 
Et af de paa samme faestede Sandsevedhseng. 
Foler af 2det Par. 
Overlmben. 
Underlfeben. 
Kindbakkerne. 
Kjseve af lste Par. 
Kjseve af 2det Par. 
Kjsevefodderne. 
Fod af lste Par fra den ydre Side. 
Samme fra den indre Side. 
Fod af 4de Par. 
Fod af 7de Par. 
Bagkroppen seet nedenfra. Et af de klapfor- 
mige Halevedhseng er borttaget for at vise de j 
under samme liggendo Pleopoder. 
He ydre Kjonsvedhseng, stserkere forstorrede. 
En af lste Par Pleopoder. 
En af 2det Par Pleopoder hos Hunnen. 
En af samme Par Pleopoder hos Hannen. 
En af de bagre Pleopoder (Gjeller), 
Spidsen af et af de klapformige Halevedhfeng 
fra den indre Side, visende de 2 rudimentsere 
Endegrene. 
Synidotea bicuspida, (Owen). 
iEgbiercnde Hun seet ovenfra. 
Den forreste Del af Legemet fra venstre Side. 
Ardunts hystrix, G. 0. Sars. 
Ovigerous female, viewed from above. 
Same animal, from left side. 
Antenna of 1st pair. 
Terminal part (flagellum) of an antenna of 2nd 
pair. 
Astacilla granulata, G. 0. Sars. 
Ovigerous female, viewed from above. 
Same animal, from right side. 
Antenna of 1st pair. 
Terminal part of antenna of 2nd pair. 
Leg of 1st pair. 
Sexually mature male, viewed from right side. 
Antenna of 1st pair, same animal. 
First pair of pleopods, together with outer sex- 
ual appendices placed anterior to them. 
Pleopod of 2nd pair, same animal. 
PI. X. 
Glyptonotus megalurus, (G. 0. Sars). 
Male, viewed from above, very slightly magnified. 
Same animal, viewed from below. 
Antenna of 1st pair. 
Point of same antenna, considerably magnified. 
Sensory appendix attached to same antenna. 
Antenna of 2nd pair. 
Labrum. 
Labium. 
Mandibles. 
Maxilla of 1st pair. 
Maxilla of 2nd pair. 
Maxillipeds. 
Leg of 1st pair, from outer side. 
Same leg, from inner side. 
Leg of 4th pair. 
Leg of 7 th pair. 
Posterior division of body, viewed from below. 
One of the valvular caudal appendages removed, 
to show the pleopods beneath. 
Outer sexual appendices, considerably magnified. 
Pleopod of 1st pair. 
Pleopod of 2nd pair, in male. 
Pleopod of same pair, in male. 
A posterior pleopod (branehia). 
Point of a valvular caudal appendage, viewed 
from inner side, showing the 2 rudimentary 
terminal branches. 
Synidotea bicuspida, (Owen). 
Ovigerous female, viewed from above. 
Anterior part of body, viewed from left side. 
Fig. 23. 
„ 24. 
„ 25. 
, 26. 
Fig. 27. 
„ 28. 
„ 29. 
„ 30. 
„ 31. 
„ 32. 
„ 33. 
„ 34. 
35. 
Fig. 1. 
„ 2 . 
„ 3. 
„ 4. 
6 . 
7. 
8 . 
9. 
10. 
11 . 
12 , 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
20 . 
21 . 
22 . 
23. 
Fig. 24. 
25. 
