ß22 ^" Stephensen. 



Tattersal: Schizop., Second Suppl. Fisheries, Ireland, Sei. Invest. 1910 (1911) part II. 



— Isopoden. "Nordisches Plankton" vol. 6 (Lief. 14), 1911, p. 181 ff. 

 Vanhoffen: Crustaceen. Drygalski: Grönland-Expedition d. Gesellsch. f. Erdkunde 



zu Berlin 1891—93, vol. 2, 1897, p. 193, p. 279. 

 Vosseler: Àmphip. d. Plankton-Exp. 1, Hyperiidea I. Mitt. Königl. Naturalien-Kabinet, 



Stuttgart, No. 17, 1901. 

 Walker : Malacostraca from the W. Coast of Ireland. Transact. Liverpool Biol. Soc. 



vol. 12, 1898, p. 159. 



— Revision of the Àmphip. of the L(iverpool) M. B. C. District. Ibid., vol. 9, 1895, p. 287. 

 AValker: Report Isop. and Amphip. collected by Sir J. Murray... "Oceana", Ann. 



Mag. Nat. Hist. ser. 7, vol. 12, 1903, p. 223-33. 



— & Hornell: Report on the Schizop., Cumac, Isop. and Amphip. of the Channel 

 Islands. Journ. Marine Zool. & Microsc, vol. 2, 1896, p. 49. 



Weber: Isop. d. Willem Barents. Bijdragen tot de Dierkunde, Afl. 10, 1884. 

 Wilson: Synopsis of the Pycnogonida of New-England; Transact. Connecticut Acad, 

 of Arts and Sc, voL 5, 1878-82, p. 1. 



— Report on the Pycnogonida of New-England and adjacent waters ; U. S. Commis- 

 sion Fish and Fisheries, Report for 1878, 1880, p. 463. 



— Report on the Pycnogonida "Blake". Bull-Mus. Comp. Zool. Harvard College, 

 vol. 8, No. 12, 1881, p. 239. 



Zimmer: Die arktischen Cumaceen. Römer u. Schaudinn, "Fauna arctica", vol. 1, 

 1900, p. 409—44. 



— Nordische Schizopoden. Nordisches Plankton, vol. 6, 1909. p. 1. 



ZiRWAs: Die Isopoden d. Nordsee. Wiss. Meeresuntersuch., K. Komm. Abteilung Kiel, 

 vol. 12, 1910, p. 71—119. 



Explanation of the Plates. 

 PI. XXXIX. ~ 



A. Young stage of Spirontocaris (groenlandica Fabr.?), figs. 1 — 10 (p. 516). 

 Fig. 1. General appearance. 



2. 1st and 2nd pair of antennae, eye. 



- 3. Mandible. 



4. 1st pair of maxillae. 



- 5. 2nd do. 



6. 1st pair of maxillipeds. 



- 7. 2nd do. 



8. 3rd do. , 1st— 3rd pair of pereiopods. 



9. 2nd pair of pleopods. 



- 10. Uropod and telson. 



PI. XL— XLI. 



в. Young stage of a Spirontocaris, figs. 11 — 20 (p. 518). 

 Fig. 11. General appearance. 



12. 1st and 2nd pair of antennae, eye. 



- 13. Mandible. 



14. 1st pair of maxillae. 



- 15. 2nd do. 



- 16. 1st pair of maxillipeds. 



- 17. 2nd do. 



18. 3rd do. and 1st, 2nd and 4th pair of pereiopods of 

 the left side. Fig, 18 a. the 2nd pair of pereiopods of right side. 



19. 3rd pair of pleopods. 



20. Telson and uropod. Fig. 20 a. The tip of the telson. 



