THE FAMILY EOTALIID^ 221 



branching ; segments more or less inHated, some- 

 times irregularly or sinuously disposed, in the 

 smaller forms spreading radially or superimposed 

 vertically ; aperture at the apex of the final segment, 

 or when compound situated in prolonged simple or 

 arborescent tubes. Canal system, when present, 

 rudimentary. Cretaceous to Hecent. 



The examples referred by Roemer, Goldfuss, and 

 Reuss to the genus Tlialamopora^ and which have 

 been well illustrated by the latter author, are 

 without doubt referable to Carpenter la. They 

 represent a cylindrical modification of the genus. 



Examples. — C. balaniforinis, Grray, " Proc. Zool. 

 Soc. Lond.' vol. xxvi. 1858, p. 269, figs. 1-4. 



This, the smallest form of the present genus, is 

 usually found in considerable numbers where it occurs. 

 It is often attached to corals, the surfaces of which 

 are sometimes dotted over quite numerously wdth 

 the little barnacle-shaped tests. It is usually asso- 

 ciated wdth other species of adherent Foramini" 

 fera found in common with this one, in tropical seas. 

 Becent. (Plate 12, fig. I.) 



C. proteiformis^ Goes, ' K. Svenska Yet. Akad. 

 Handlingar,' vol. xix. No. 4, 1882, p. 94, pi. vi. 

 figs. 208^214, pi. vii. fig. 215-219. 



The above is a few-chambered form of upright 

 growth. As its name implies, it is very variable in 

 shape. Fig. J is typical of the species. Goes found 

 this form in the Caribbean Sea at 300 fathoms, and 

 it has since been found in the lagoon of the Funafuti 

 Atoll, EUice Islands. Becent. (Plate 12, fig. J.) 



