SUPPLEMENTARY GONIOPOR^. 159 



SUPPLEMENT TO GROUP V. (Vol. IV. p. 92.) 

 Indian and Persian Forms. 



166. Goniopora Persia (4)4.* ((7. Persica quarta.) 

 [Guverchin Kala, N.W. shore of Lake Urmi (Miocene), coll. Loftus ; British Museum.] 



Description. — The corallum formed rounded slightly compressed nodules. 



The surface was pitted by shallow calicles, 1 • 5 mm. in diameter. The wall had a stout, 

 straight, median ridge. The septa were stout and wavy, forking so irregularly near the walls 

 that the number of points of attachment to the same can only with difficulty be made out. 

 They seem to vary from thirteen to eighteen. There seem to have been short, stout pali, 

 with a stout central tubercle. 



This coral was omitted from Vol. IV. because 1 thought it was a true Porites. Re- 

 examination has, however, now convinced me tliat it is a Goniopora or one of those difficult 

 transition forms with septa diminishing in number and showing free forkings round the walls. 



There are three nodules, only one of which shows any trace of the surface characters. 

 The other two are unrecognisable except that faint traces of the reticular Poritid skeleton can 

 be seen in the more crystalline part of the fossil. They are placed here provisionally. 



a. With thin slices. Geol. Dept. R. 7089. 



6, c. ' Geol. Dept. R. 7088. 



SUPPLEMENT TO GROUP XIIL (Vol. IV. p. 155.) 

 West Indian Forms. 



167. Goniopora Jamaica 1. {G. Jamaicce prima.) 



[" Upper Clarendon District " (Cretaceous) ; Museum of the Geological Society, London.] 



Syn. t Porites reussiana Duncan, Quart. Joum. Geol. Soc. xxi. (1865) p. 8. 



The original description of P. reussiana runs as follows : " The corallum is in more or 

 less cylindrical branches, which leave the stem at an acute angle, and are often flattened and 

 always rugged and gibbous. The calicles are large, irregular in si^e, and shallow, and there 

 are sometimes more than six distinct pali. The septa are from eight to twenty-four (!) in number. 

 Diameter of calicles often /^ inch, that of the branches from j*ij to |g inch." 



♦ For the earlier forms, see Vol. IV. p. 236. 



