208 COELENTBRATA. 



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

 almost at the height of the funnel. Ribs nearly horizontal. Calymma Esch. 



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

 Ocyroe Rang. 



Section 3. Cestidae. 



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

 the stomach-plane. 



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

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

 the funnel. The sub-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. CestusLes. ; Vexillum Fol. 



Order 2. NONTENTACULATA. 

 Without tentacles. 



Fam. Berdidae. 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. 



Ctenoplana* Korotneff (Z.f.w.Z., 43, 1886) and Goeloplana Kowalewsky 

 (Nachrichten der Liebhaber der Natunviss., 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 Ctenoplana," Q. J. M. 8., vol. 39, p. 323. 

 t Monticelli, Naples Mitth., 12, 1897. 



