“Cribrimorph” Cretaceous Polyzoa. 397 
3. L. arcuata, sp. n. 
Type-specimen. British Museum, D. 28294; quadratus- 
zone ; E. of Brighton, Sussex. 
4. L. languessensis, sp. n. 
Type-specimen. In collection of M.Canu (a photograph of 
type-specimen in British Museum); Campanian; Lan- 
guesse, France. 
5. L. tenuilabrosa, sp. n. 
Type-specimen. British Museum, D. 28892; Marsupites- 
zone ; Brighton, Sussex. 
6. ?L. [Reptoporella| regularis (d’Orbigny), Pal. Franc. 
1852, pl. 717. figs. 6-7, 1853, p. 475; Senonian ; 
Sainte-Colombe, France. If this is a Lagynoporid, 
d’Orbigny’s artist has drawn an cecium from the peri- 
phery of the asty, and repeated it, thus causing the 
distal communication-pore to appear in those inner 
cecia in which it naturally would be hid. 
7. L. magna, sp. n. 
Type-specimen. British Museum, D. 19623 ; mucronatus- 
zone ; Liineburg, Hanover. 
D. Rhacheoporida, fam. nov. 
Multiserial Cheilostome Polyzoa of fair size (about 2 mm.), 
with the intraterminal front wall formed of flattened cost 
which are firmly fused in a narrow projecting median seam 
but have no intercostal. fusions; apertural spines 4 ; 
secondary intercecial tissue tends to be developed; the 
apertural bar has a median process; there is a tendency to 
form a secondary aperture of which ‘the proximal shield is 
formed (1) by the whole apertural bar alone, or (2) by the 
fusion of the apertural bar with the proximal pair of 
apertural spines, or (3) by a pair of avicularia lying proxi- 
mally and laterally with regard to the aperture ; avicularia 
small and numerous. 
Tabular Diagnosis of the Subfamilies. 
A. Cicia comparatively delicate; avicularia, if 
definite in position, lie outside the apertural 
TIM ee anes erate He otekoaiegeta e aard eels ike wae a, Rhacheoporine. 
B. Cicia comparatively coarse ; avicularia tubu- 
lar, a pair involved in the apertural ring.... b. Disheloporine, 
Ann. & Mag. N. Hist. Ser, 8. Vol. xviii. Pat 
