240 CRUSTACEA MALACOSTRACA. III. 



Fig. 6e. First left leg of a male, from in front; x 34. 



6f. Abdomen and seventh thoracic segment with the basal parts of its legs, from below; x 30. 

 The anal doors wanting. 



Plate V. 



Fig. i. Haplomesus quadrispinosus G. O. Sars. 

 Fig. i a. Large male from the "Ingolf Stat 36, from above; x 2I / 2 . 



i b. Three anterior segments with the head of the male shown in fig. i a, from above ; x 23. 

 ic. Anterior third of the body of a male from the "Ingolf Stat 38, from above; x 16. Of the 



antennulae only the basal joint and of the antennae the proximal parts are shown. 

 id. Anterior third of the body of a scarcely full-grown male from the "Ingolf Stat. 36, from 



the right side. The entire first leg, the first and most of the second joint of the antennula, 



the three proximal joints of the antenna, the first joint of second and fourth legs, and first 



and most of second joint of third leg are shown, 

 i e. Left mandible of a male, from below ; x 83. 

 if. Right maxilliped of the same male, from below; x 83. 

 i g. First left leg of a male, from behind; x 58. 

 i h. Abdomen and the two posterior thoracic segments of a male from the "Ingolf Stat. 36, from 



above; x 23. 

 i i. Abdomen and the two posterior thoracic segments of another male from the same station, 



from below; x 31. 

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



x 60. The lateral glabrous parts of the pleopods are in situ overlapped by the lateral plates. 

 1 1. Left lateral plate of the abdominal operculum of the last-named male, from below; x 60. The 



granulation omitted. 



i m. Female with the marsupium rudimentary, from the "Ingolf Stat. 24, from above; x 2I / 2 . 

 i n. Anterior part of the body of the female shown in fig. i m, from above; x 24. Left antenna 



omitted, 

 i o. Abdomen and the two posterior thoracic segments of the female shown in fig. i m, from 



above; x 24. 

 i p. Abdomen and last thoracic segment of another female from the same station, from below; 



x 28. 



Fig. 2. Haplomesus angustus n. sp. 

 Fig. 2a. Male from the "Ingolf StaL 18, from above; x n. The specimen is certainly far from adult, 



as seventh thoracic segment is very small and without legs. 

 2b. Head and the two anterior thoracic segments of the male shown in fig. 2 a, from above; 



x 28. 



2C. First right leg of the same male, from behind; x 47. 

 2d. Abdomen and the two posterior thoracic segments of the same male, from above; x 17. 



