CORALS AND BRYOZOA. 17 



Off. Cat., p. 36, No. 16. Chatham Islands ; Y. Fig. 17, coral, 

 natural size. 



Amphihelia ramosa, n. s. Corallum very hard and com- 

 pact, in slender cylindrical branches striated with longitudinal 

 grooves. There are no perfect calices in the few broken frag- 

 ments examined by me ; but one peculiarity which seems to dis- 

 tinguish it is their abundance and their not being alternate. 

 They are distributed irregularly and closely all over the 

 branches, and in most cases they penetrate to the centre. 

 App. Off. Cat., p. 36, No. 17. Sutherland's, Akiteo River, 

 Wellington; V. 



Amphihelia graxulata, u. s. Branched with nearly alter- 

 nate calices, which are deep, curved, with about twenty-four 

 nearly equal septa. The external surface is covered with 

 rounded depressed granulations. Costa well marked, and cover- 

 ing the whole external surface of the calice. In this species 

 there is a distinct and rather abundant endotheca, which is 

 rather a rare feature in the genus, with from one to three 

 partitions in each of the loculi. The divisions of different 

 loculi sometimes correspond. The fossil is represented by 

 abundant fragments in two specimens (Nos. 65 and 66 of Off. 

 Cat. App., pp. 39 and 40), but they are all a good deal 

 broken. What is seen is, however, quite sufficient to prove its 

 distinctness from any described form. Aohanga Falls, Akiteo 

 River, Wellington, lY. ; and marly greensands above coal. 

 Baton River, Nelson ; YI. 



Family — Astreid.e. Group — Cladocorace.e. Genus — 

 Cladocora. Ehrcnberg and Ilemprich, 1834. 



Astrean corals, with long corallites, hard and compact, 

 irregularly united, but free for the greatest part of their extent. 

 Calices shallow, with papillary columella and pali. 



The greater portion of the species are living, and belong to 

 temperate seas. The fossils extend to the Cretaceous forma- 

 tions, and one has been described by me in the Transactions 

 of the Philosophical Society, Adelaide, 1877—78.^^ 



Cladocora dubia, n. s. This coral is an irregularly-branched 

 fragment of what appears to be a species of Cladocora. No 



* In the plate of the work referred to a mistake is niaJc : Fig. 4, instead of Fig. 

 6. is Cladocora contortUis ; and all the references are to be similarly changed. 



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