“Cribrimorph” Cretaceous Polyzoa. 101 
1. D. bispinosa, sp. 1 
Type-specimen. British Museum, D. 8986 ; Danian ; Faxe, 
Denmark. 
[Escharipora| abbottit (Gabb & Horn), 1862, Journ. 
Acad. Nat. Sci. Philadelphia, 2nd series, vol. v. part il. 
p. 149, pl. xx. fig. 33 ; Danian ; New Jersey, U.S.A. 
3. D. | Escharipora] distans (Gabb & Horn), 1862, op. cit. 
p. 148, pl. xx. fig. 832 ; Danian ; New Jersey, U.S.A. 
h. Permatororrvz, subfam. nov. 
Tabular Diagnoses of the Genera. 
A. Secondary aperture, when present, formed of 
distal shield only. 
I, Distal shield, when present, formed of a pair 
of avicularia. 
a. Distal shield, when present, incomplete .. L. Pelmatopora. 
6. Distal shield always present, complete 
PMS AC ISGS LOR oie ieic o Ca eR Onrar ee ACRES ei aeNAIE Il. Decurtaria. 
II. Distal shield always present, formed of 
apertural spines ....... Siaeeievecre a ee ats wo. ILL Murinopsia. 
B, Proximal shield of secondary aperture, in so " 
far as it is present, formed of a median pro- 
cess of the apertural bar which ultimately 
fuses with the proximal pair of apertural 
RIDUTER, tee b dt aeicityclr eter te RN Ocr ea near nice IV. Sandalopora. 
C. Proximal shield of secondary aperture, in so 
far as it is present, formed by the upward 
growth of a pair of avicularia, placed laterally 
and proximally with regard to the aperture, 
fusing over the apertural bar, which thus 
does not take part in its formation. 
I, One row of pelmata only (a doubtful second 
row 1s sometimes distinguishable) ...... V. Ichnopora. 
II. Two or more rows of pelmata. - 
a, Apertures remain wide ; tissue of secon- 
dary aperture spreads around, and finally 
forms a secondary front wall (lamina 
peristomica of Jullien) .............. VI. Batrachopora. 
b, Apertures become tubular and further 
growth of secondary tissue prolongs the 
tubulax-aperture-. 3.0 steer oe ce ..+. WIL. Pachydera, 
I. PeLMAToPoRA, gen. nov. 
Genotype. P. pero. 
