CRUSTACEA MALACOSTRACA. III. 241 



Fig. 2 e. Abdomen and the two posterior thoracic segments of the same male, from below; x 24. 6. 

 basal joint of sixth thoracic leg. As already stated, the seventh pair of legs are not developed. 



Fig. 3. Haplomesus insignis n. sp. 

 Fig. 3 a. The single male, from above; scarcely x 10. 



— 3 b. Head and the two anterior thoracic segments, from above ; x 26. 



— 3 c. First left leg, from behind; x 50. 



— 3 d. Abdomen and seventh thoracic segment, from below; x 34. 



Fig. 4. Haplomesus toiuispinis n. sp. 

 Fig. 4 a. Anterior part of the body of a female without marsupium from the "Ingolf" Stat. 24, from 

 above; x 25. 



— 4b. Right antennula of the same specimen, from above; x 46. 



— 4 c. First left leg of the same specimen, from behind; x 49. 



— 4 d. The body, excepting the two anterior thoracic segments and the head, of a mutilated juvenile 



female from the "Ingolf" Stat. 22, from above; x 17. 



— 4 c Posterior part of the body of the last-named specimen, from above; x 42. 7. seventh thoracic 



segment; d. denticles. 



— 4I The two posterior thoracic segments and the abdomen of the last-named specimen, from 



below; x 42. 7. base of seventh thoracic leg. 



Fig. 5. Haplomesus modestus n. sp. 

 Fig. 5 a. Body of the single mutilated specimen without first thoracic segment and head, from above; 



x 24. 



— 5 b. The three posterior segments and abdomen of the same specimen, from below ; x 44. 



Fig. 6. Hetcromesus dentatus n. sp. 

 Fig. 6 a. Mutilated male without first thoracic segment and head, from above; x 14. 



— 6 b. Anterior part of the body of a mutilated female with the marsupium rudimentary, from 



above; x 17. 



— 6 c. Right antennula of the last-named female, from above; x 46. 



— 6d. First left leg of a young specimen, from behind; x 63. 



Plate VI. 



Fig. 1. Hetcromesus dentatus 11. sp. (continued). 

 Fig. 1 a. Abdomen and the two posterior thoracic segments of a male, from above; x 23. 



— ib. Abdomen and seventh thoracic segment of another male, from below; x 28. 



— 1 c. Abdominal operculum of a young female, from below; x 50. 



Fig. 2. Heteromesus longiremis n. sp. 

 Fig. 2 a. Body of a mutilated female without first thoracic segment and head, from above; x 13. 



— 2 b. Last thoracic segment and abdomen of the female, from above; x 22. 



The Ingolf-Expcdilion. III. %■ 



