1876.] AND LITTORAL CORALS. 429 



Pacific and West-Indian coral-faunas is explained in the essay men- 

 tioned above. 



Of the new genera, Polycyathus and Agelecyathus may be said to 

 be like the Astrangiacese ; but they have not incised septa, and there 

 is no endotheca. 



Brachytrochus is a very simple form, whose flat shape is relieved 

 by the presence of teeth to the septa, simulating pali. 



Javania is a Desmophyllum with a remarkable epitheca ; and 

 Dendrocora represents in the littoral zone the deep-sea genus Soleno- 

 smilia, nobis (Trans. Zool. Soc. vol. viii. p. 327). 



It has been found necessary to reexamine the species Sclerohella 

 hirtella (a St. Helena coral, with a wonderful amount of calicular 

 variation and recalling the Cretaceous Synhelia), and also Cyatho- 

 helia axillaris of Japan. 



List of new Species. 



Conocyathus zelandice. Cook's Straits, New Zealand. 

 Deltocyathus orientalis. Japanese seas, 52 fathoms. 

 Paracyathus persicus. Persian Gulf. 



coronatus. Nullipore zone in Persian Gulf. 



Polycyathus atlanticus. St. Helena. 

 Agelecyathus helence. St. Helena. 



-, variety minor. St. Helena. 



persicus. Persian Gulf. 



Brachytrochus simplex. Gaspar Straits, 12 fathoms. 

 Javania insignis. Japanese seas, 48 fathoms. 

 Oculina cubaensis. Caribbean sea. 

 Antillia lonsdaleia, Duncan, a variety. Japanese seas. 

 Dendrocora fissipara. West coast of Africa. 

 Astrangia minuta. Caribbean seas, littoral. 



epithecata. Caribbean seas, littoral. 



Cylicia tenella, variety. Port Natal. 

 Placopsammia darwini. Galapagos Islands. 

 Balanophyllia helence. St. Helena. 

 striata. St. Helena. 



List of Species reconsidered. 



Sclerohelia hirtella, Pallas, sp. 

 Cyathohelia axillaris, Ellis & Solander. 



List of new Genera. 



Polycyathus. Javania. 



Agelecyathus. Brachytrochus. 



Dendrocora. 



Proc. Zool. Soc— 1876, No. XXIX. 29 



