CRUSTACEA MALACOSTRACA. 



Fig. I e. Left mandible, from below; x 23. 



— if. Di.stal part of left mandible, from below; >-- 75. 



— I g. Left maxillula, from below; X 44. 



— I h. Left maxilla, from below; x 44. 



— I i. Left maxilliped, from below; x 23. 



— I k. Left first thoracic leg, from below; x 23. The exopod broken off. 



— 1 1. Exopod of fourth thoracic leg; x 12. 



— I m. Right sixth thoracic leg, from below; x 23. The exopod broken off. 



— in. Telson and uropods, from above; x 11. Distal i^art of both exojDods broken off. 



— 10. Distal part of the telson, from above; x 22. Some of the terminal and marginal spines broken 



or broken off. 



Fig. 2. Pseudomma roseum G. O. Sars. 

 Fig. 2 a. Right antennal squama of an adult female from the "Ingolf ' Stat. 27, from above; x scarcely 11. 



— 2 b. Right antennal squama of an adult male taken by the "Thor", from above; x .scarcely 11. 



Fig. 3. Pseudomma frigidum n. sp. 

 Fig. 3 a. Ocular plate of a female with marsupium; x 11. 



— 3 b. Right antennal squama of an adult female from the "Ingolf Stat. 138, from above; x scarcely n. 



Fig. 4. Pseudomma parrum Vanhoffen. 



Fig. 4 a. Ocular plate of an ovigerous female, from above; x 35. 



— 4 b. Antennal squama of a male; x 26. 



— 4c. Left mandible of the adult female, from below; x 28. 



— 4d. Left maxilliped of the same female, from below; x 28. 



— 4e. Left first thoracic leg of the same female, from below; x 28. 



— 4 f . Major part of the abdomen of the ovigerous female, seen from the left side especially in 



order to show the length of the pleopoda; x 12. 



— 4g. Telson and right uropod of the adult female, from above; x 21. 

 ■ — 4 h. Telson of the same female; x 35. 



Fig. 5. Pseudomysis abyssi G. O. Sars. 

 Fig. 5 a. Left eye-stalk of a male, from above; x 10. 



— 5 b. Right first pleopod of a male, from behind; x "/j. 



— 5 c. Inner ramus and basal part of the pleopod shown in fig. 5 b; x 12. 



— 5 d. Right fourth pleopod of the same male, from behind; x "/a. 



Among the figures, figs, i a and i b on PI. I, and fig. 2 a on PI. IV have been drawn by 

 Mr. E. Bang; fig. 3 a on PI. I, figs, i a, i b, 2 a, 2 f, 2 g, 3 a and 4 a on PI. II, figs, i a, 3 a, 3 b, 4 a and 

 4b on PI. Ill have been drawn by Mr. Th. Bloch, but all have been corrected and frequently con- 

 siderably altered by the author. All the remaining figures on the Plates have been drawn by the author. 



