242 CRUSTACEA MALACOSTRACA. III. 



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



2 d. 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. 33. The single female without marsupium, from above; x 10. 



3b. 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 antennula, from above ; about x 300. j. proximal part of the very long 



distal seta on second joint 



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

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



Fig. 4. Heteromesus frigidus n. sp. 

 Fig. 43. Adult male from the "Ingolf" Stat. 139, from above; x n. 



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



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



joint; j. third joint; 4. fourth joint; j. 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 e. Last thoracic segment and abdomen shown in fig. 4 d, 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. 

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

 4i. Head and the three anterior thoracic segments of the female shown in fig. h, from above; x 16. 

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



omitted. 

 4!. 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; 4. fourth extremely short joint -- the distal part 



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

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

 4n. 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. 

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



x 172. 



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

 45. Abdomen and seventh thoracic segment of a female, from below; x 24. 

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



