114 MADREPOEAEIA. 



of teeth or nodules * towards a lar£;e, irregular, and obscure columella. In section (Angelis, I.e. 

 fig. 7, the original preparation of which I have been privileged to see) they are thin with large, 

 open interseptal loculi and show very plainly the typical fusion of the tertiaries with the 

 secondaries. There are traces of a union of two septa across the calicle to form a directive 

 keel. 



The specimen has the typical skeletal formula somewhat obscured by the waviness of the 

 septa, and their frequent interruption owing to perforations. There are five other representa- 

 tives of the genus known from Crosara ; one of them (viz. that called " Pontes ramosa " by 

 Reuss) was specially abundant, and all have somewhat the same general characters of the 

 septa. The " G. rudis" Eeuss has much larger calicles, 4*5-6 mm., and they are deep. 

 The " G. ramosa " Eeuss (not of CatuUo) has calicles of about the same size, but the method of 

 growth is strikingly different, while the " G. micrantha " Eeuss, with calicles 2 ■ 5-3 mm. 

 across, has from 22-26 and even 30 septa, very wavy and crowded. 



94 Goniopora Vicenza (i3)12. (PI. XIV. fig. 6.) 

 [" Fontana della Bove," Vicenza (Oligocene) ; British Museum.] 



Description. — Corallum formed short, thick, irregular, rounded columns rising vertically, 

 consisting of compact and freely fusing stems about 3 cm. thick and 5-6 cm. high. The tops 

 divided into three or four erect, slightly pointed processes of different thicknesses and heights 

 (up to 1'5 cm.) and shapes. These formed the beginnings of fresh clusters of erect fusing 

 columns. The living layer extended some 6-7 centimetres, with its lower edges sometimes 

 hanging free. 



The calicles pit the altered surface, but are not deep, and measure from wall to wall 

 2-2 "5 mm. across. The walls reticular, thick and dense. In section the calicles are 2 mm., but 

 the finer structure is confused apparently owing to the fact that the skeletal elements were 

 everywhere hollowed in the typical manner by some alga. Septa were of uniform thickness, 

 short and irregular, fused very freely together, showing distinct traces of the typical formula, 

 but they seem to be melted down with the large columellar tangle to form to the naked eye 

 a reticulum not very distinct from that of the walls and without very marked radial 

 symmetry. 



There is only one complete specimen of this coral (11 cm. high) and a mounted trans- 

 parent section. Here and there faint traces of septal formation can be seen on the surface ; on 

 the boring alga see p. 53, with footnote. 



Branching Goniopores seem to have been common in this district. The only one closely 

 described, Porites ramosa Eeuss, thick beds of which are found at Crosara, differs from this in 

 that its walls are thin single threads (see p. 110). The details of CatuUo's P. ramosa are not 

 sufficient for any identification (see p. 107). 



a. Geol. Dept. E. 910. 



* These nodules are probably the effects of aqueous action on the dead surface, see p. 113. 



