46 
CAPITATE GENERA. 
^s-OTE ON SOME CAPITATE GENERA. 
The Cretaceous Bryozoa include an interesting series of forms 
which are fungiform, capitate, or clavate, having a narrow cylin- 
drical stem that expands upward into a fungus-shaped cap, or into 
a disc, or into a club-shaped knob. 
These Bryozoa would all be closely associated in any classification 
based on zoarial growth alone ; but the structure of these forms 
is so different that they must be widely separated. It may be 
convenient, however, to tabulate the genera and their affinities. 
CoRYMBOPORA, Michclin, 1846 {= Corymhosa, d’Orbigny, 1853). 
Type species, C. menardi^ Mich. 
Eascigeridae with zoaria of dichotomous cylindrical stems with 
expanded ends. Monomorphic. Pores on sides of branches left by 
the nearly filled up apertures of dead zooecia. 
Bicave A, d’Orbigny, 1853. 
Type species, B. urnula (d’Orb.). 
Osculiporidae with a capitate zoarium, with a short narrow stem 
and a series of tooth-like projections from the upper margin of the 
zoarium. 
Fungella, von Hagenow, 1851. 
Type species, F. diijardini (Hag.). 
No one having previously selected one of von Hagenow’ s three 
species as the type, I select F. dujardmi, as that seems to agree 
most fully with von Hagenow’s diagnosis. That species has a 
simple clavate zoarium, which is dimorphic. The British Museum 
specimens show (cf. e.g. PI. YII. Fig. 2h) that the apertures are 
irregularly arranged. 
Fungella belongs to the family Cresciscidae. The genus is a close 
ally of Heteropora, differing from it by the simple clavate form of 
the zoarium. 
Trochiliopora, Gregory, 1909. 
Type species, T. Jiumei, Gregory, 1909. 
Iladioporidse. The genus has a capitate zoarium and is closely 
allied to Bomopora and Biscocavea. 
