404 Mr. W.D. Lang—Revision of the 
II. Avicularia sporadic or, if paired, situated 
proximally rather than laterally with re- 
gard tothe: aperturen . 4 <2 oe «sles + ini eae Il. Rhabdopora, 
B. Median area of fusion comparatively broad ; 
avicularia comparatively blunt ............ Ill. Graptopora. 
I. CaLPIpopoRA, gen. nov. 
Genotype. C. diota. 
Tabular Diagnoses of the Species. 
A. Apertural bar with unflattened median pro- 
jection. 
T. Avicularia minute, straight. 
a. Incrusting, unilaminar. 
1. Avicularia, more than one pair to each 
SPOKbOTOe 5 oom bit ois ase he ee eee 1. C. subfallax. 
2. Avicularia, a pair only to each aperture.. 2. C. novaki. 
be hrectMbtlaminarte ee ten eee eter. 3. C. mumia. 
II. Avicularia larger, slightly curved; erect, 
yNUAMiNar,. (os) ites wade eae la Pea ees 4, C. diota. 
B. Apertural bar flattened to form a proximal 
shield. 
I. Proximal shield narrow; avicularia larger 
than (A), but still small, curved, and 
pointed ; erect, bilaminar .............++.- 5. C. auritulus. 
Il. Proxima] shield broader; avicularia larger, 
curved, and pointed ; erect, unilaminar .... 6. C. aurita. 
1. C. [Membraniporella| subfallaw (Lecointre), 1912, Bull. 
Soe. Géol. France, series iv. vol. xii. p. 354, pl. xiv. 
fig. 5 ; Cenomanian; Le Mans, France. 
2. C. novaki, sp. nu. 
Type-specimen. British Museum, D. 28508 ; Cenomanian ; 
Korycaner Schichten ; Kank, Bohemia. 
3. C. [Eschara| mumia (Pocta), 1892, Mech. Kory. Kank. 
Kut. Hor.; Cesk. Acad. Cis. Frant. Josefa, p. 32, pl. iv. 
figs. 10-11; Cenomanian, Korycaner Schichten; 
Kank, Bohemia. 
4. C. diota, sp. n. 
Type-specimen. British Museum, D. 28509; Cenomanian ; 
Korycaner Schichten; Kank, Bohemia, 
5. C. auritulus, sp. n. 
Type-specimen, British Museum, D. 28513 ; Cenomanian ; 
Korycaner Schichten; Kank, Bohemia. 
