396 Mr. W. D. Lang—Revision of the 
6. L: amphora, sp. n. 
Type-specimen, British Museum, D. 28255; quadratus- 
zone, pillula-subzone ; W. of Newhaven, Sussex. 
7. L. urceolus, sp. n. 
Type-specimen. British Museum, D. 28889; quadratus- 
zone, depressa-subzone ; HK. of Brighton, Sussex. 
8. L. ampulla, sp. n. 
Type-specimen. British Museum, D. 28256; quadratus- 
zone; W. of Newhaven, Sussex. 
9. L. horsleyensis, sp. n. 
Type-specimen. British Museum, D. 28908; [high in] 
coranguinum-zone ; West Horsley, N.E. of Guildford, Surrey. 
b. Lerrocuertororin”, subfam. nov. 
LEPTOCHEILOPORA, gen. Nov. 
Genotype. L. tenuilabrosa. 
Tabular Diagnoses of the Species. 
A. (cia very small—less than } mm, long........ 1. L. vulnerata. 
B. Cicia small, 5 to 2 mm. long. 
I. Apertural spines comparatively large; intra- 
terminal front wall well arched. 
a. Intercostal furrows very obscure .......... 2. L. filliozati. 
b. Intercostal furrows clearly marked. 
1. Coste about 15, aperture hardly cribriline. 3. ZL. arcuata. 
2. Costz 16-20; aperture cribriline........ 4, L. languessensis. 
IJ. Apertura] spines minute; intraterminal front 
wall flatter. 
a. Ovicells formed like the intraterminal front 
pov Ae sera fede sracete': Cieks bis ieneies eke eae eee 5. L. tenuilabrosa, 
6, Ovaicelis plain |. cake ee ie ete eee 6. L. regularis. 
C. CEcia larger—nearly 1 mm. long ........ wee. 0. ZL. magna, 
1. L. [Cribrilina| vulnerata (Brydone), 1914, Geol. Mag. 
dec. vi. vol. 1. p. 97, pl. iv. figs. 3-4; mucronatus-zone ; 
Trimingham, Weybourn, Norfolk. 
2. L. [ Cribrilina] filliozati (Brydone), 1910, Geol. Mag. 
dec. v. vol. vil. p. 391, pl. xxx. figs. 9-10; quadratus- 
zone ; Hants. 
