108 MADREPORAEIA. 



84. Goniopora Vicenza (i3)2. 



[Croce Grande di S. Giov. Ilarione, Valle di Ciupio (Middle P>ocene).] 



Pontes Pellegrinii, D'Achiardi, Corall. Foss. Nummulit, Alp. Venete, Pisa (18fi7), p. 10. 



i Pontes pellegrmii, D'Achiardi, Coralli Eocen. Fritili, Atti Soc. Toscana Pi.sa (1875), vol. i. p. 203. 



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



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



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

 •cylindrical. 



C'alicles 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 Eeuss, in 1874,* described doubtfully as P. peUegrinii 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 (Eosazzo) accepted the identification. But the significance of this is 

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

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

 ^enus. 



A similar coral is said to occiu- at Eonpa (see G, Verona 1). 



85. Goniopora Vicenza (i3)3- 

 [Monte Grumi near Castel Gomberto (Oligocene).] 

 Porites mimda, 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. 



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

 ridges. Septa 14-18, tliin, 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 by thin irregular synapticulse. The six typical pali form a ring, in the 

 centre of which rises a small inconspicuous coUumellax tubercle. 



A vertical section shows an irregular fine reticulum. 



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

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



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



