CRUSTACEA MALACOSTRACA. III. 235 



Fig. i c. Head of a female, from above; x 54. 



— id. First thoracic leg of a male; x 89. 



— 1 e. Distal part of first thoracic leg of a female; x 89. 



— if. Second right thoracic leg of a female, from the anterior side; x 89. 



— 1 g. Abdomen with right uropod of a female, from above; x 51. 



— ill. Abdominal operculum of a female, from below; x 40. 



— 1 i. Abdomen of a male, from below; x 40. Uropods omitted. 



Fig. 2. Haploniscus bicuspis G. O. Sars. 

 Fig. 2 a. Male from the "Ingolf" Stat 117, from above; x 15. Legs omitted. 



— 2 b. Left antennula, first joint of right antennula and the whole right antenna of a male from 



the the same station, from above; x 35. 



— 2 c. Second, third and fourth joints of left antenna of a male from the same station, from the 



outer side; x 50. 



— 2d. Right antennula and antenna of a female from the same station, from above ; x 35. 



— 2 e. Left maxilliped of a male from the same station, from below ; x 60. 



— 2 f. Distal part of third right leg of a male from the same station, from behind ; x 200. 



— 2g. Posterior end of abdomen of the male shown in fig. 2 a, from above; x 30. u. uropods. 



— 2 h. Abdomen and the two posterior thoracic segments, with the proximal parts of their legs, of 



a male from the "Ingolf" Stat. 117, from below; x 34. a. anal doors; c. the very long and 

 setiform male appendix of left lateral opercular plate; u. uropod. 



— 2 i. Median lamella of the abdominal operculum of a male from the same station, from below ; 



X44. 



— 2 k. Posterior end of abdomen of a female from the same station, from above; x 34. 



— 2I. Abdomen of another female from the same station, from below; x 34. 



Fig. 3. Haploniscus spinifcr n. sp. 

 Fig. 3 a. Frontal margin of the head with right antennula and antenna, and the proximal parts of 

 left antennula and antenna, of a male from the "Ingolf Stat. 22, from above; x 23. 



— 3 b. First joint of the flagellum, and terminal part of the peduncle with the characteristic spini- 



form upper process of left antenna of a male, from above; x 20. 



— 3 c. Second, third and fourth joints of left antenna of a male from the "Ingolf Stat. 22, from the 



outer side; x 50. 



— 3 d. Posterior end of abdomen of a male from the same station, from above; x 23. u. uropods. 



— 3 e. Posterior end of abdomen of another male from the same station, from above ; x 23. 



— 3f. Median plates of the abdominal operculum of a male from the same station, from below; 



X48. 



— 3S- Right lateral plate of the abdominal operculum of the last-named male, from above; x 48. 



— 3I1. Abdomen of a female without marsupium from the "Ingolf Stat. 36, from below; x 23. a. 



anal doors; 0. operculum; u. uropods. 



30* 



