474 



DISCOVERY REPORTS 



The characteristic direction of the eyes persists in most of the preserved specimens. 

 Dr Kemp's note continues: "The early post-larval stages of the two species differ 

 widely. In M. subrugosa they live on the bottom and closely resemble the adult in colour. 

 In M . gregaria they are pelagic, often found at the surface ; in colour they are a clear red, 





^^f£7i 



Fig. i. Munida subrugosa (a-f) and M. gregaria (a'-f). 



d. Terminal segments of third maxilliped: x i\. 



e. Internal surface of merus of chela: x ij. 



/. Cross-section of abdomen at 2nd abdominal 

 segment: xij, 



a. Outline of carapace in dorsal view: x ii. 



b. Anterior part of carapace in side view: x i\. 

 E, insertion of eye; A 1, A 2, insertions of 1st 

 and 2nd antennae. 



c. Eye in dorsal and end views: x 3. 



of great brilliance and transparency, with the stomach visible as a black mass. The food 

 of this pelagic stage, in part at any rate, is diatoms, and individuals kept alive in a glass 

 dish showed a strong positive heliotropism". 



I am unable to find any important difference in structure between the early post-larval 

 stage of M. subrugosa and the adult (Plate IV, figs. 1, 4). 



