THE GENUS TOZEUMA 381 



Endopod of antenna unchanged. 



Leg I developed, its exopod with eight setae. Legs 3-5 rudimentary. Pleopods 

 absent. Endopod of uropods nearly as long as exopod, with several setae. 



Stage V (Fig. 75). 



Length of rostrum 6-o, 3-6 mm. 



Body 9-3, 7-56 mm. 



Total length 15-3, n-i6mm. 



The great difference in length between these two specimens suggests that two species 

 may be represented, but they agree in all other respects, and differ very little from the 

 preceding stage. 



The telson is narrower, the limbs of the fork closing inwards (Fig. 75). 



The anterior overlap of abdominal somite i has now a definite pointed process. The 

 antenna is unchanged. 



Legs I and 2 are developed, with exopods, and there are three pleurobranchs, the first, 

 on leg I, large and foliated, the third very small and rudimentary. 



Pleopods absent. 



Stage VL Length of rostrum 8-2 mm., body 11-05 mm.; total length 19-25 mm. 

 Abdominal somites 4 and 5 with small posterior dorsal spine. 



Antenna unchanged. Legs 1-3 developed, with exopods. Five pleurobranchs, 

 decreasing in size backwards to a small rudiment on leg 5. 

 No pleopods. 



Stage VIII? (Figs. 76-84). Length of rostrum io-6 mm., body 14-7 mm.; total 

 length 24-7 mm. 



Rostrum with about sixteen small ventral spines. Abdominal somite 2 with small 

 anterior spine on pleura. Telson very long and narrow (width : length about i : 6), 

 deeply forked at end, with three pairs of large outer spines and four pairs on posterior 

 margin. Anal spine present. 



Antennule, exopod faintly segmented, with sbc groups of aesthetes; endopod shorter 

 than exopod; segment i of peduncle with long pointed stylocerite and small ventral 

 spine. 



Antennal scale very long and slender, narrowed at end ; flagellum very much longer 

 than scale, with basal segment distinct. 



Maxillule, palp unsegmented, with five spines. Maxilla, endopod with small basal 

 segment marked off, distal part with six setae; exopod very large, extending beyond 

 endopod, and broad and square at end. 



Legs I and 2 chelate, leg i shorter than leg 2, dactyl shorter than palm. Carpus of 

 leg 2 nearly as long as chela. Legs 4 and 5 without exopods. 



Pleopods large, with small setae. 



