326 



THE INVERTEBRATA 



vas de. 



Fig. 233. A, Sidevieyv oi vcidXe Simocephalus sima. Highly magnified. From 

 Shipley and MacBride. an.' 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 Simocephalus sima, magnified to the 

 same extent as A. From Cunnington. an.' antennules; a?i." antennae; md. 

 mandibles; mx.' maxillules; Th.i-Th.s, thoracic limbs ; hep. hepatic diverti- 

 culum; h. heart; ov. ovary; bdp. brood pouch; sh.gl. shell gland; brn. brain; 

 md.g. mid gut; nk.on. neck organ. 



