CORALS FROM THE PERSIAN GULF. 1019 



progress of the work ; to Professor Sollas for permission to use 

 his apparatus, which enabled me to grind sections, photograph and 

 reconstruct a wax model of TreinatotroGhus zelaiidim \ to Professor 

 Jeffrey Bell for permission to examine various Madreporaria in 

 the British Museum; and to Professor Stanley Gardiner for the 

 loan of a large number of his specimens of Heterocyathus 

 cequicostatas for comparison with the present collection. 



The collection consists of examples of the following species : — 



Family Guyniid^e. 



Pyrophyllia injiata Hickson [25]. 

 Family Flabellid.e. 



Flabellimi magnijicum v. Marenzeller [28]. 



Family Turbinoliid^. 



Htterocyathas cequicostatus Milne-Edwards & 



Haime [29]. 

 Heterocyatlius heterocostatus, sp. n. 

 Paracyathus cavatus Alcock [1]. 

 Trematotrochus zelandke Duncan [14]. 

 Agelecyatkits pe7-sicus Duncan [14j. 



Family Fungiid.e. 



Fungia patella Milne-Edwards & Haime [29J. 



Family Eupsammiid^. 



Heteropsammia aphrodes Alcock [1]. 

 Dendrophyllia sp, ? 



All these specimens are in the Manchester Museum. The 

 occurrence of a recent Trematotrochus is worthy of special 

 attention. Hitherto, the genus has been known from seven 

 fossil and one recent species from Australia and Australasian seas, 

 and it is remai-kable to find it appearing in so remote a locality 

 as the Persian Gulf. More remarkable still is the fact that this 

 very species has already been described from Cook's Strait, 

 New Zealand, by Professor Martin Duncan under the name of 

 Conocyathus zelandke. The resemblance of the coral I have been 

 examining to the figures and description (so far as it went) of 

 this Conocyathus was so striking, that it occurred to me that 

 possibly Duncan had overlooked the perforations of the wall, 

 characteristic of a Trematotrochus. Owing to the kindness of 

 Professor Jeffrey Bell 1 have been able to re-examine the original 

 type specimens in the British Museum, and the result of this 

 examination has been to convince me that the corals are absolutely 

 identical. The British Museum species have not been so care- 

 fully cleaned and dried as those in the present collection, and in 

 places the intercostal furrows are somewhat choked up by sand 

 and grit ; but that perforations do exist, exactly similar to those 

 of the Persian Gulf species, I have no hesitation in stating ; in 

 parts of the corallum they are clearly visible, but unless one were 



