2 6 CRUSTACEA MALACOSTRACA. III. 



Fig. 15 c!. Head, first thoracic segment with right leg, and anterior part of second segment of the 

 male, from below; x 205. 



— 15 c. Seventh left thoracic leg, from in front; x 205. 



Fig. 16. Aspidophryxits peltatus G. O. Sars. 



P"ig. 16 a. Head of a male larva in second stage, from below; x 350. 



— 16 b. Distal part of seventh right leg of the same larva, from in front; x 290. 



Fig. 17. Clypeoniscus MeinerH Giard & Bonnier. 

 Fig. 17 a. Head and first thoracic segment — most of its legs omitted — of a male from Sy 11 i dot lira 

 nodulosa Kr., from below; x 145. 



Plate XVI. 



Fig. 1. Clypeoniscus MeinerH Giard & Bonnier (continued). 

 Fig. 1 a. Fifth left thoracic leg of a male from Synidothca nodulosa Kr., from in front; x 125. 



— ib. Sixth left thoracic leg of the same male from S. nodulosa Kr., from in front; x 125. 



— 1 c. Seventh left thoracic leg of a male from Pleuroprion Murdochi Benedict, from behind; x 125. 



Fig. 2. Arcturochercs pulchripcs n. gen., n. sp. 

 Fig. 2 a. Female from Astacilla granulala G. O. Sars, from the left side; x 8. /. legs. 



— 2 b. Outline of the month of the same female, from below. 



— 2 c. Male from Astacilla granulafa G. O. Sars, from above; x 25. 



— 2d. Head and first thoracic segment — most of its legs omitted -- of a male from Pleuroprion 



hystrix G. O. Sars, from below ; x 57. 



— 2 e. Right antennnla of the head shown in fig. 2d, from below; x 130. The major distal part 



of the setae on the end of the long ramus and behind it omitted. 



— 2 f. First left thoracic leg of the male shown in fig. 2 c, from behind; x 77. 



— 2 g. Fifth left leg of the male shown in fig. 2 c, from in front; x 77. 



— 2 h. Sixth left leg of the male shown in fig. 2 c, from in front; x 77. 



— 2 i. Distal part of the leg shown in fig. 2 h, from in front; x 155. 



— 2 k. Seventh left leg of the male shown in fig. 2 c, from in front; x 77. 



— 2 1. First left pleopod of the male from Pleuroprion hystrix, from in front; x 77. 



Fig. 3. Astacilloeclius Ingolfi n. gen., n. sp. 



Fig. 3 a. Female, from the left side; x n. 



— 3b. Head of the female, from below; x 32. 



— 3 c. Left antennnla of the male, from below ; x 86. 



— 3d. Sixth left leg of the male, from in front; x 86. 



Fig. 4. Parapodascon Stebbingii Giard & Bonnier. 



Fig. 4a. Female, from below; x 12. 



— 4 b. Male, from above ; x 37. 



