I. '08. 



84 



Plate III. — continued. 



Fig. 7. — Second raaxilla, 



Fig. 8 --First maxilla^ 



Fig. 9.— Mandible, 



Fig. 10. — Outline of outer urojtod, 



Fig.ll. — Petasma, left half, seen from beliiud, ... 



Fig. 12. — Dorsal view of cephalic region, 



Sergestes arctic us, Kroyer. 



Fig. 13. — Dorsal view of cephalic region. 



Fig. 14. — Petasma, left half, seen from behind (medium 



stylet further enlarged). 

 Fig. 15. — Basal segments of lower antennular flagellum of 



male^ 

 Fig. 16. — ^Outline of outer uropod, 

 Fig. 17. — Terminal segment of third maxillipede. 

 Fig. 18. — Rostrum., 

 Fig. 19. — Lateral view of a female, 



X 



5. 



X 



5. 



X 



4-5 



X 



3. 



X 



5. 



X 



2. 



X a-b. 



X 31-5. 



X 4-5. 



X 15-5. 



X 18. 



X 2. 



Plate IV. 



Pasiphae princeps, Smith. 



Fig. 1. — Lateral view of a large male, ... 

 Fig. 2. -^Antenna! scale of a specimen 75 mm. in length, 

 Fig. 3. — Telson of the same specimen, ... 

 Fig. 4. — Rostrum of a specimen 67 mm. in length, 

 Fig. 5. — Rostrum of a specimen 75 mm. in length. 

 Fig. 6. — Rostrum of a specimen 37 mm. in length, 

 Fig. 7. — Basus and ischium of second pereiopod of a 

 specimen 67 mm. in length, 



Pasi])hae tarda, Kroyer. 



Fig. 8. — Lateral view of a specimen 69 mm. in length, ... 

 Fig. 9. — Antennal scale of the same specimen, ... 

 Fig. 10. — Telson of the same specimen, 



Fig.ll. — Basus and ischium of second pereiopod of the 

 same specimen, ... ... ... 



Pasij^ha'e sivado (Risso). 

 Fig. 12.— Telson, 



Pi-ate V. 



Parapamphae sulcatifrons, Smith. 

 Fig. 1. — Lateral view of the largest Irish specimen, 

 Fig. 2. — Apex of telson, in the same specimen. 

 Fig. 3. — Telson of a larva measuring 8*5 mm.. 

 Fig. 4. — Dorsal view of a larva measuring about 14 mm.. 

 Fig. 5. — Lateral view of the same specimen, 

 Fig. 6.— First maxilla of the same specimen, 

 Fig. 7 — Second maxilla of the same specimen. 

 Fig 8. -Maxillipedes, pereiopods and pleurobranchs of the 

 same specimen. 



X 



1. 



X 



5. 



X 



5. 



X 



5. 



X 



5. 



X 



5. 



6'5. 



X 



2-5 



X 



5. 



X 



5. 



X 



6-5 



X 



5. 



X 



3-5 



X 



20. 



X 



20. 



X 



8. 



X 



8. 



X 



36. 



X 



36. 



X 20-5. 



