250 



CRUSTACEA MALACOSTRACA. III. 



Fig. 7 d. Seventh left leg of the same female, from in front; x 52. 



— 7 e. Posterior part of abdomen with nropods of the same female, from below ; x 55. 



Fig. 8. Desmosoma politum n. sp. 

 Fig. 8 a. Female without marsnpinm, from above; x 26. 



8b. First left thoracic leg of a female, from behind; x 55. 



— 8 c. Second left thoracic leg of the same female, from behind; x 55. 



— 8d. Seventh left thoracic leg of the same female, from in front; x 55. 



— 8 e. Abdomen of a female, from below ; x 54. 



Plate XI. 



Fig. 1. Desmosoma gracilipes n. sp. 

 Fig. 1 a. Ovigerons female, from above; x 18. 



— ib. First left thoracic leg of a female, from behind ; x 34. 



— 1 c. Second left thoracic leg of the same female, from behind ; x 34. 



1 d. Seventh left thoracic leg of the same female, from in front; x 34. 



1 e. Posterior part of abdomen with nropods of a subadult female, from below; x 45. 



— if. Male, from above; x 21. 



Fig. 2. Desmosoma natator n. sp. 

 Fig. 2 a. Male, from above ; x 33. 



— 2 b. First right thoracic leg of the male, from behind ; x 63. 



— 2 c. Major part of second right thoracic leg of the male, from behind; x 63. 



— 2d. Seventh left thoracic leg of the male, from in front; x 63. 



2 e. Abdomen and posterior part of thorax, with the basal parts of last pair of legs, of the same 

 male, from below ; x 54. 



Fig. 3. Desmosoma laterale G. O. Sars. 

 Fig. 3 a. Female without marsnpinm, from above; x 27. 



— 3 b. Head and the two anterior thoracic segments of a female without marsnpinm, from above; x 44. 



— 3 c. First left thoracic leg of a female, from behind ; x 58. 



— 3d. Second left thoracic leg of the same female, from behind; x 58. 



— 3c Seventh left thoracic of the same female, from in front; x 58. 



Fig. 4. Desmosoma arma/iim G. O. Sars. 

 Fig. 4 a. Seventh left thoracic leg of a female with marsnpinm, from behind ; x 54. 



Fig. 5. Desmosoma insigne n. sp. 

 Fig. 5a. Female with marsnpinm (from the "Ingolf" Stat. 36), from above; x 18. 



— 5b. Fifth thoracic segment of the female shown in fig. 5 a, from above; x 26. 



— 5 c. Fifth thoracic segment of a male, from above; x 26. 



— 5d. First left thoracic leg of an adult female, from behind; x 37. 



