ITALIAN GONIOPOR^. 115 



95. Goniopora Vicenza (i3)13. 



[In the Michelotti Collection with an old label, " Litharcea hellula Montecchio " * 

 (Oligocene ? ) ; Geol. Mus. Univ. Eome.] 



Description. — Corallum so strongly convex as to suggest its being the tip of a round 

 branch or stem, 18 mm. in diameter, tapering rapidly to a blunt point. 



Calicles about 1*75 mm. across, shallow funnel-shaped, polygonal, with blunt rounded 

 walls, which are a smooth, dense but angular reticulum, i.e. composed of smooth threads bent 

 sharply at all angles. The same angular reticulum invades the calicle and obscures more or 

 less completely its radial symmetry. Septa appear to be about 15-17, but very few of them 

 run from the wall towards the centre, but end suddenly or else bend about to join one another 

 or a directive at almost any angle. Here and there a typical triplet is seen, but no formula 

 can be discovered. The texture of the section obscured. 



I have seen no other Poritid like this. Its leading characters are (1) its apparently 

 ramose corallum ; (2) its close reticulum of smooth, angularly bent threads ; and (3) the 

 obscuration of the radial symmetry in its calicles. 



In all these points it is in very striking contrast with Michelin's "Astrcea hellula" (see 

 p. 133), or with Milne-Edwards and Haime's "Litharcea hellula" (see p. 134). 



96. Goniopora Verona (2)1. 



[Roncja (Upper Eocene).] 



Porites pellegrinii, Eeuss (partim), Denksch. K. Akad. Wiss. Wien, xxxiii. (1874) p. 14, pi. xl. 

 figs. 9, 10. 



This coral from Eonja was grouped with others from S. Giov. Uarione (see G. Vicenza 7) 

 as a species " Porites pellcgrinii" by Eeuss. According to our rule we have assumed that the 

 description and figures apply primarily to the specimens from the latter locality, but, with such 

 a careful worker as Eeuss, it is fairly certain that there were very good grounds for grouping 

 them together. On its possible relationship with the Porites pellegrinii of D'Achiardi see 

 p. 108 and p. 112. 



97. Goniopora Verona (2)2. 



[Eonpa (Upper Eocene), coll. Michelotti; Geol. Mus. Univ. Eome.j 



Description. — Corallum a small convex plate with edges folding under and built up of 

 layers, so that if the object on which it started were small the coral might later form a nearly 

 spherical mass by fresh layers. 



* Unfortunately no information is given as to which Montecchio is meant, or from what 

 horizon the specimen comes. One Montecchio is situated in the Quaternary beds which stretch 

 along the valley of the Po, and the other is in Vicenza : this latter is probably that which is meant. 



Q 2 



