CRISINA. 
159 
CRISINA, d’Orbigny, 1849. 
SYXOJyYilS. 
Crisisina,^ d’Orbigny (1849). 
Cnsina, d’Orbigny (18-30) ; non Gabb & Horn (1862) ; Stoliczka (1864) ; 
Sniitt (1872), etc. 
Hetepora, pars, Goldfuss (1827), etc. 
Jdinonen {non Lanix.), d’Orbigny (18-33), Busk (1875), Hincks (1880). 
Ccelophxjma, pars, von Hageuow (1851). 
Claviticbigera, pars, d’Orbiguy (18-33), Beissel (1865). 
Reptotubigera, pars, Bucaille (1890). 
Diagxosis. 
Zoarium erect; clicliotomously branching. hJ’o aliform selvage. 
Fixed by a broad discoid base. Eeverse face smooth or 
punctate. IS^o obverse axial rod. 
Zooecia in regular series, with low and well-raised peristomes. 
The apertures are in uniserial rows. 
Goncecia are the usual form of marsupial chamber. 
Fig. 11. — The Phnlnngella stage or base of a Crisina ; x 8 dia. 
Middle Chalk: Chatham. Gamble Coll. D. 4242. 
^ This name was originally spelt Crisisina, and d’Orbigny appears subsequently 
to have used that form and Crisina indiscriminately. Thus, in the Index to the 
Prodrome (vol. iii., Table, p. 51) all the species are referred to Crisisina, and 
Crisina is not mentioned, whereas in the text the species are distributed between 
both names. On the other hand, in the Bry. Cret. Crisina only is used in the 
text, though Crisisina appears once on a plate, through an obvious misprint. 
Some latter authors have accepted Crisina and Crisisina as two genera. But 
it appears most probable that the latter term was due to a misprint, by which 
d’ Orbigny sometimes felt bound to stand. 
