96 MADREPORARIA 



were purely reticular and probably round-topped. The intracalicular skeleton has been 

 replaced by calcite in both specimens, and only traces of the septal apparatus can be seen. 

 The radial symmetry seems to have been obscured and to have been replaced by a reticulum 

 continuing that of the walls, but showing here and there round the margins traces of the 

 primitive radial arrangement. In these cases there seemed to have been about 24 septa, the 

 tertiaries being only faintly developed. 



There are two dark purplish-brown specimens which seem to be of the same kind. 



■p 04 

 a, b. Geol. Dept. , "„ „ , transferred from India Museum, London, 1880. 



A& C 



69. Goniopora India a* 

 [Jliirk ? t Indus River, Sind (Eocene), coll. Falconer ; British Museum.] 



Description. — Corallum massive, with convex, slightly wavy surface, edges creeping over 

 former growths. 



Calicles 4-5 mm., irregularly polygonal, as shallow concavities with sharp irregular ridge- 

 like walls rising to different heights. The 24 septa conspicuous, but too indistinct to make 

 out in any detail. The columellar tangle appears as if it had been large and sometimes 

 slightly convex. 



There is one specimen, which from the surface markings clearly belongs to this genus, 

 but internally the specimen is altered, and become crystalline. 



a. Geol. Dept. R. 4809. 



70. Goniopora Persia (4)1. 



[Islands of Lake Urmi (Miocene), coll. Dr. Abich.] 



Porites leiophylla Abich (? Reuss), Mem. Ac. Imp. Sci. St. Petersburg, ser. vi. vol. ix. 1 (1859) p. 101 

 (41). 



Dr. Abich has described, as Porites, knobbed and shapeless masses fairly common on the 

 islands of Lake Urmi, in the limestone forming the floor of the great cave of the Castle of 

 Maku, and perhaps also recognisable among other fossils from Malishkent. 



For a description Dr. Abich repeats almost word for word Reuss' description of his 

 Porites leiophylla (see Haidinger's Naturwissentsch. Abhandl., ii. (1848) p. 28). This is not a 

 Porites but a Goniopora, and is re-described from Reuss' text and figures on p. 123 of this 

 Catalogue under the heading Goniopora Vienna Basin 8. 



The specific identity of two corals from localities so far apart is perhaps possible, but 

 even if the structural details of the two were as similar as Dr. Abich thinks, I should still be 

 inclined to doubt their being closely allied. 



* See prefatory note to Group XIV. p. 156. 



t An old label bears the legend " Jink (Indus R.)." I have not succeeded in finding out where 

 Jink is, unless it is Jhirk, or Jhirruck, on the Indus. 



