[huntsman] the ASCIDIAN FAMILY CAESIRIDAE 219 



passing along inner surface and lengthwise of ovary. (Eugyrinae) . 

 Bi. A gonad on each side of body. 



Ci. Pharynx with nine folds on each side. Halomolgula. 



C2. Pharynx with seven folds on each side. Molguloides, gen. 

 nov. 



C3. Pharynx with five folds on each side. Ectorchis, gen. nov. 



C4. Pharynx with from 5-7 long, bars on each side instead 

 of folds. Eugyrioides . 

 .B2. A gonad on the left side only. 



Di. Pharynx with six folds on each side. Rhizomolgula. 



D2. Pharynx with from 6 to 9 long, bars on each side instead 



of folds. Eugyra. 



Ao. Left ovary above intestinal loop. Testicular lobes either arranged 



alongside the more or less elongated ovary, or else somewhat 



definitely separated from it and in masses. {Cystingiinae). 



El. Testicular lobes arranged along and to a considerable extent 



on the outer side of ovary. Vasa deferentia attached to 



mantle (body-wall), running parallel to oviduct, and open- 

 ing near latter. (Pharynx with seven longitudinal bars on 



each side in place of folds). Paramolgula. 

 E2. Testicular lobes bordering and more or less enclosing ovary. 



Vas deferens single and running along middle of inner surface 



of ovary to open near oviduct. 



Fi. Pharynx with seven folds on each side. Anurella. 



¥2. Pharnyx with six folds on each side. Euritteria, gen. nov. 

 E3. Testicular lobes bordering and more or less enclosing ovary. 



Vasa deferentia opening on inner surface of gonad and not 



running parallel to ovary. 



Gi. x\ single gonad, situated on the left side. Eugyriopsis. 



G2. A gonad on each side of the body. 



Hi. Pharynx with seven folds on each side. Molgula. 

 H2. Pharynx with six folds on each side. Gymnocystis. 

 E4. Testicular lobes more or less separated from ovary and in 



distinct masses. Vasa deferentia short and not related to 



ovary. 



11. Pharynx with from five to seven folds on each side. 

 Cystingia. 



12. Pharynx with seven longitudinal bars on each side in 

 place of folds. Pareugyrioides. 



A3. Left ovary (if present), above intestinal loop. Testicular lobes 

 massed at blind end of ovary and radially arranged. (Caesir- 

 inae) . 



