CLADOCERA 



365 



- -mx: 



vas de 



Fig. 244. A, Side view of male Shnocephalus sima. Highly magnified. From 

 Shipley and MacBride. aii.' antennules"; an." antennae; t. testis; vas de. vas 

 deferens ; hep. hepatic diverticulum ; h. heart ; sh.gl. shell gland ; mes. mid gut ; 

 nk.on. neck organ. B, Side view of female Shnocephalus sima, magnified to 

 the same extent as A. From Cunnington. an.' antennules; an." antennae; 

 md. mandibles; mx.' maxillules; Th.i-Th.5, thoracic limbs; hep. hepatic 

 diverticulum; h. heart; ov. ovary; bdp. brood pouch; sh.gl. shell gland; 

 brn. brain; md.g. mid gut; 7ik.on. neck organ. 



