242 



CRUSTACEA MALACOSTRACA. III. 



Fig. 2 c. Last thoracic segment and abdomen of the female, from below ; x 22. 



2d. Three posterior thoracic segments and abdomen of a mutilated male, from above; x 10. 



2 e. Abdomen and posterior part of the thorax of the same male, from above; x 20. 



— 2 f . Abdomen and last thoracic segment of the same male, from below; x 20. 



Fig. 3. Heteromesus Schmidtii n. sp. 

 Fig. 3 a. The single female without marsupium, from above; x 10. 



— 3 b. The three anterior thoracic segments and the head, from above; x 15. The wavy markings 



mentioned in the text omitted. 



— 3 c. Terminal part of left antenuula, from above ; about x 300. s. proximal part of the very long 



distal seta on second joint. 



— 3d. Abdomen and seventh thoracic segment, from above; x 19. 



— 3c Abdomen and seventh thoracic segment, from below; x 19. 



Fig. 4. Heteromesus frigidus n. sp. 

 Fig. 4 a. Adult male from the "Ingolf" Stat. 139, from above; x 11. 



— 4b. Anterior part of the body of the same male, from above; x 16. 



— 4 c. Terminal part of right antenuula of a male, from above; about x 300. 2. distal part of second 



joint; j. third joint; ./. fourth joint; s. proximal part of the strong distal seta. 



— 4 d. Last thoracic segment and abdomen of a male from the "Ingolf" Stat. 139, from above; x 24. 



— 4& Last thoracic segment and abdomen shown in fig. 4d, from below; x 24. The granulation 



omitted. 

 4 f. Median plates of the abdominal operculum of a male from the same station, from below; x 45. 



— 4 g. Left lateral plate of the abdominal operculum of the last-named male, from below; x 54. 



— 4 li. Adult female from the "Ingolf Stat. 139, from above; x n. The marsupium omitted. 



41. Head and the three anterior thoracic segments of the female shown in fig. h, from above; x 16. 



— 4k. Right antennula of a female, from the left side; x 47. The major part of the distal seta 



omitted. 

 4I. Distal part of another antennula, obliquely from the outer side and from above; about x 300. 

 2. distal part of second joint; j. third joint; ./. fourth extremely short joint — the distal part 

 of its long seta omitted; s. proximal part of the very thick distal seta. 



— 4 m. Left mandible of a female, from below; x 56. 



— 411. Distal part of the same mandible, from below; x 165. 



— 40. Right maxilliped of another female, from below; x 56. 



— 4 p. First left leg of a female, from behind; x 47. 



4 q. Distal oblique margin with setae and comb of the leg shown in fig. 4 p, from the outer side ; 

 x 172. 



— 4 r. Abdomen and seventh thoracic segment of a female, from above ; x 24. 



— 4s. Abdomen and seventh thoracic segment of a female, from below; x 24. 



— 4t. Operculum of a female, from below; x 34. 



