108 MADREPORARIA. 



84. Goniopora Vicenza d3)2« 



[Croce Grande di S. Giov. Ilarione, Valle di Ciupio (Middle Eocene).] 



Pontes Pellegrinii, D'Achiardi, Corall. Foss. Nummulit. Alp. Venete, Pisa (1867), p. 10. 



) Porites pellegrinii, D'Achiardi, Coralli Eocen. Friuli, Atti Soc. Toscana Pisa (1875), vol. i. p. 20.'$. 



f Forties pellegrinii, Reuss (see below, p. 111). 



Non Forties pellegrinii, Duncan, Sind Foss. Corals, Mem. Geol. Surv. India (1880) p. 67, pi. v. iii. 



Description. — Corallum dendroid, branches thin and irregular, some compressed, some 

 cylindrical. 



Calicles shallow, 1-2 mm. across, walls thin, usually 16 septa, rarely 24, almost all free, 

 denticulate. 



" This fossil was so well preserved that it might almost have been taken fresh from the 

 sea." Under these circumstances one regrets that it was not well figured. Owing to this 

 omission and to the shortness of the description we have no means of deciding whether the 

 coral which Reuss, in 1874,* described doubtfully as P. pellegrinii D'Ach., from the same 

 locality, is or is not the same. It is true that D'Achiardi, in 1875, working on specimens from 

 a different locality (Rosazzo) accepted the identification. But the significance of this is 

 discounted by the fact that he made no observations on the differences between his and Reuss' 

 descriptions. Further, Duncan's Porites pellegrinii is a true Porites and does not belong to this 

 genus. 



A similar coral is said to occur at Ronca (see G. Verona 1). 



85. Goniopora Vicenza a3)3- 

 | Monte Grumi near Castel Gomberto (Oligocene).] 

 Poritet minutu, Reuss, Denkschr. K. Ak. Wiss. Wien, xxviii. (1868) p. 164, pi. xv. fig. 8. 



Description. — Corallum apparently a hemispherical mound, built up of concentric layers. 



Calicler, crowded, polygonal, 1*5-2 mm. across and very shallow. Walls low, sharp 

 ridges. Septa 14-18, thin, irregular, much perforated, and with upper edges granulated, with 

 only the remains of the typical formula. The septa often fuse together quite close to the 

 walls, and are also joined bythin irregular synapticulse. The six typical pali form a ring, in the 

 centre of which rises a small inconspicuous collumellar tubercle. 



A vertical section shows an irregular fine reticulum. 



The author adds that this is distinguished from his P. nummulitica (see next heading), 

 with which it occurs, by having smaller calicles and thinner septa. 



* Denkschr. K. Ak. Wiss., xxxiii. p. 17, pi. xl. figs. 9 and 10. 



