BRANCHIOPODA 



323 



Fig. 231. Apiis cancriformis . A, Dorsal view. car. carapace; d.on. dorsal 

 organ ; e, compound eye ; e.' median eye ; ram. ramus of caudal fork ; sh.gl. shell 

 gland (maxillary gland) seen through the carapace; th. 1, processes of the first 

 thoracic limb. B, Ventral view. ah. abdominal limbs; ah.' limbless somites 

 of the abdomen; an.' antennule; car. carapace; Ihr. labrum; md. mandible; 

 mx.' maxillule; ynx." maxilla; pgti. paragnathum; ram. ramus of caudal fork; 

 th.i, first thoracic limb; tk.io, tenth thoracic limb; th. 11, egg pouch on 

 eleventh thoracic limb. C, Side view with the left half of the carapace cut 

 away. br. branchia;^6. flabellum. Other letters as above. 



