208 COELENTERATA. 



Fam. 7. Calymmidae. Body strongly compressed. The great lobes arise 

 almost at the height of the funnel. Ribs nearly horizontal. <'<ilyiiinia Esch. 



Fam. 8. Ocyroidae. Lobes enormous, almost independent of the body. 

 Ocyroe Rang. 



Section 3. Cestidae. 



Body much compressed in tlie funnel-plane, i.e., with the broad faces parallel to 

 the stomach-plane. 



The sub-tentacular ribs much shorter than the suit-stomachal, which extend 

 all along the aboral edges of the body. The interradial vessels arise direct from 

 the funnel. The suit-tentacular vessels run along the middle of the band to 

 unite at the ends of the body with the long sub-stomachal and paragastric 

 vessels. Gonads in the sub-stomachal vessels only. The larvae are Mertensia- 

 like forms. 



Fam. Cestidae. C'esius'Les. ; Vexillum Fol. 



Order 2. NONTENTACULATA. 

 Without tentacles. 



Fam. Beroidae. With large mouth and stomach. Body conical or oviform, 

 compressed in the funnel-plane. The vessels give off branches which anastomose 

 in the jelly. Beroe Brown. 



Ctfiwplmiii* Korotneff (Z. f. w. Z., 43, 1886) and Coeloplrma Kowalewsky 

 (Nachrichten der Licbhaber der Naturwiss., 1882, Russian) should probably be 

 included amongst the Ctenophora. 



Pemmatodiscus Monticelli,t a gastrula-like form living in the jelly 

 of Rhizostoma, may be mentioned amongst the Coelenterates. 



* A. Willey, "On Cteuoplana," Q. J. M. S., vol. 39, p. 323. 

 t Monticelli, Naples Mitth., 12, 1897. 



