248 CRUSTACEA MALACOSTRACA. III. 



Fig. 6. Nannoniscus plebejus n. sp. 

 Fig. 6 a. Major part of a male, from above ; x 50. 



6b. Anterior part of a female, from above; x 50. Of left antenna the sixth joint of the peduncle 



and the filiform flagellum are omitted. 



6c. Anterior right part of the head of a male, showing the antennula and the four proximal 



joints of the antenna, from above; x 145. 



6d. First right thoracic leg of a male, from behind; x 82. 



6 e. Seventh left leg of a male, from behind ; x 82. 



6f. Abdomen and the two posterior thoracic segments, with the proximal parts of their legs, of 



a female, from below; x 67. 



6 g. Abdomen and the two posterior thoracic segments, with the proximal parts of their legs, of 



a male, from below; x 86. 



Fig. 7. Nannoniscus minutus n. sp. 

 Fig. 73. Female without marsupium, from above; x 31. 



7b. Anterior half of the same female, from above; x 50. 



7c. Right antennula of a female, from above; x 180. 



7d. First left thoracic leg of a female, from behind; x 78. 



7e. Sixth left thoracic leg of the same female, from in front; x 78. 



7 f . Abdomen and last thoracic segment of a female, from above ; x 47. 



7 g. Abdomen and the two posterior thoracic segments, with the basal parts of their legs, of an 



ovigerous female, from below; x 61. 



7 h. Abdomen and the three posterior thoracic segments, with the proximal parts of their legs, 



of the same female, from the left side; x 58. 



Plate X. 



Fig. i. Nannoniscus armatus n. sp. 

 Fig. i a. Young female, from above; x 27. 



i b. Head of the same specimen, from above; x 45. 



i c. First left thoracic leg of the same specimen, from hehind; x 56. 



id. Second left thoracic leg, from behind ; x 59. 



i e. Abdomen and the three posterior thoracic segments of the same young female, from the 



right side; x 46. Seventh leg omitted as only half developed, the proximal parts of the two 

 preceding legs are shown. 



if. Abdomen and the posterior part of the thorax of the same specimen, from below ; x 58. 



The only half-developed seventh pair of the thoracic legs omitted, while the proximal parts 

 of sixth pair are shown. The long and slender ventral process shown on fig. ic has not 

 been rendered, as the anterior half of the penultimate thoracic segment is omitted. 



Fig. 2. Nannoniscus spinicornis n. sp. 

 Fig. 2 a. Anterior half of a female, from above; x 53. 



zb. Right antennula, from above; x 152. 



