LARVAL DEVELOPMENT 



217 



STAGE V (Fig. 3c) 



A further increase to twelve occurs in the number of spines of the telson. The uropods 

 are more setose and the inner branch is larger. Only two spines are present on the 

 postero-dorsal margins of the third and fourth abdominal segments, although four still 



a. 



Fig. 3. Larval stages of Munida. 



Third stage, length 5-5 mm. b. Fourth stage, length 8-o mm. 



c. Fifth stage, length 8-5 mm. 



persist on the fifth. Simple biramous pleopods are present on the second to fifth 

 abdominal segments. The teeth on the posterior border of the carapace are reduced to 

 only four or five. Fine teeth are now present on the dorso-lateral margin of the proxi- 

 mal portion of the rostrum. The antennal scale carries seventeen plumose hairs and the 

 antennule has many more aesthetes on the terminal segment. The total length of the 

 specimen figured was 8-5 mm. 



