88 Mr. A. Vv'. Waters on 



Reiiss's figure was difficult to understaud, hut there is no 

 doubt that s])ccimens iu my collection are this species, and 

 also on furtlier cleaning up the specimen from Pap Falvi 

 Patak sent by Pcrgcns the characters can be made out. 

 The zooecia are raised, the oral aperture is straight below 

 and is contracted at each side, so that of course the aperture 

 Avas filled by the 0])erculum, whereas in Ciipitlaria tie 

 opening is opesial. At the distnl end of the zocecium there 

 is €111 appendage, but whether avieularian or vibracuiar it is 

 difficult to say, thougli probably avicularian. The opening 

 to this appendage is apiiarently round, but details cannot be 

 deciphered. 



There is no pit and the jirinsary is a small zcoecium 

 sunounded by six zooecia (PI. VI. fig. 7). 



The oviceli is very wide and raised, similar to what I 

 figured^ in Fedora excelsa, Kosch., and is })laced beyoi.d 

 the avicularium — a position so far from the oral aperture is 

 (difficult to explain. 



Loc. Val di Lonte and Graiu 11a (it'ss ), Eocene of Hun- 

 gary) ; Pap Patak; Pap Piilvi Patak ; Maine de Bnda {l\r- 

 (;ins), liocca di Seiesa, Colic Perici, and Malo, ^'icelltille 

 [A. \V. coll.). 



Mamillopora crassilabris (Koschinsky). 



Stichoporina crassilabris, Koscliiusliv, Bi-y. Siid-Bav. p. GO, pi. vii. 

 tigs. 1-4 (1855). 



A specimen of Mamillojwra from between Grotte and 

 Sarego, near Lonigo, Yiccntine, has a great thickening above 

 the oral ajieiture, sometimes rising in one or three processes, 

 the middle one of which is an avicularium or vibraculum, 

 and it looks like the appendage of ilf . hideutata very much 

 (iilarged and erect. No other appendage is visible, but the 

 state of the fossil in not satisfactory. A small specimen of 

 M. simplex i from Brendola has a thickening above the oral 

 aperture, also a large triangular avicularium by the side. 

 Tiiere are six zooecia round the primary and further 

 cleaning recently has enabled better study. May not this 

 thickening occur in various species of the group under certain 

 conditions ? 



Loc. Gotzreuth {!(.), between Grotte and Sarego. 



* "X. Ttal. Brv.," Quart. Journ. Gtol. Soc. vol. xlvii. p. 20. pi. iv. 

 fig. CnSDl). * I i 



t Loc. cif. fijr. 18. 



