“Cribrimorph” Oretaceous Polyzoa. 109 
Tabular Diagnoses of the Species. 
A. Pelmata close to the middle line. 
I. Coste more than 20, length about 1 mm. 
a. Erect, unilaminar. 
1. Avicularia placed more proximally .. 1, ? I. dentata. 
2. Avicularia placed more distally ...... 2. I. socia. 
Bo Wireet, | DiNaeer aete hele tials wie ee oo 0 3. I. campestris. 
If. Costee 15-20, length less than 1 mm. ; erect, 
ey Uae the ent Weten.: cisyateta espe. a) asi crcl vis) arebe love, a 4, I, filiformis. 
B. Pelmata close to the middle line in some cecia 
and somewhat separate in others, length less 
pay erie se URCPUSEIOO: char. cate deine «sce oo 5. I. vestigium. 
C. Pelmata widely separate with occasional per- 
forations in the median area of fusion, and 
secondary pelmata. 
I. Coste 15-20, length about 1 mm. ........ 6. I. amica., 
II. Coste 10-15. 
a, Avicularia do not fuse above the aper- 
tural bar. 
1. Incrusting ; avicularia very small and 
GWEN ast ieee rota « alivcPixeiare: wees: 7. I. cavia. 
2. Erect, unilaminar. 
a. Avicularia small andlow ........ 8. I. cunicula. 
8. Avicularia very largeand fairly high. 9. Z. asella. 
3. Erect, bilaminar. 
a. Avicularia rather small and low.... 10. ? I. porigera. 
B. Avicularia large and very high .... 11. J. leporina., 
b. Avicularia fuse above the apertural bar.. 12. L. denticulata. 
1. ?L. [Semiescharipora] dentata (d’Orbigny), Pal. Franc. 
1852, pl. 718. figs. 5-8, 1853, p. 482; Senonian ; 
~ Meudon and Sainte-Colombe. 
2. 0, soci, Sp. 1. 
Tyne-specimen. British Museum, D. 28479; Coniacian ; 
Fécamp, France. 
3. I. campestris, sp. n. 
Type-specimen. British Museum, D. 28461; Coniacian ; 
Fécamp, France. 
4, I. [| Escharipora] filiformis (d’Orbigny), 1852, Pal. Franc. 
p- 232, pl. 700. figs. 13-15; [Emscherian] ; Fécamp, 
France. [Interpreted according to Canu’s identifica- 
tions of specimens from Fécamp in his collection, a 
photograph of one of which is in the British Museum. ] 
5. I. vestigium, sp. n. 
Type-specimen. British Museum, D. 8133 ; coranguinum- 
zone; Gillingham, Kent. 
