*Cribrimorph” Cretaceous Polyzoa. 99 
1. S. méenensis, sp. n. 
Type-specimen. In collection of M. Canu (a photograph 
of type-specimen in British Museum) ; Danian ; Moen. 
2. S. ordinatus, sp. n. 
Type-specimen. British Museum, D. 15115 ; mucronatus- 
zone; Rigen. 
3. S. compositus, sp. n. 
Type-specimen. British Museum, D. 18977; Danian ; 
New Jersey, U.S.A. 
4. S. verruculosus, Marsson, 1887, Pal. Abh. Band iv. Heft 1, 
p. 101], pl. x. fig. 15 ; mucronatus-zone; Rigen. 
VIII. Usacusta, Jullien. 
Genotype. U. reticulata. 
Tabular Diagnoses of the Species. 
A. Apertural spines with few branches. 
I. Apertures, avicularia and other spaces in the 
secondary front wall form a regular pat- 
tern; a shallow groove proximally placed 
with regard to the aperture in the secondary 
LOTS: GU AB oehs eine Gen id Cierra 1. U. ocellata. 
II. Apertures, avicularia, and other spaces in 
the secondary front wall very irregularly 
arranged ; no shallow groove asinI..... 2. U. reticulata. 
B. Apertural spines with many branches. 
I. Smaller; apertures, avicularia, and other 
spaces in the secondary front wall form a 
regular pattern; a shallow groove proxi- 
mally placed with regard to the aperture 
in the secondary front wall ............ 3. U. demorgant. 
II. Larger; apertures, avicularia, and other 
spaces in the secondary front wall very 
irregularly arranged; no shallow groove 
BAM TE, oor telesales cca Mare te Stee rete ore 4, U. meudonensis. 
1. U. [Steginopora| ocellata (J. Jullien), 1886, Bull. Soc. 
Zool. France. vol. xi. p. 614, pl. xix. figs. 1-3 ; Senonian 
[Campanian]; Port Brehay, France. 
2. U. [Steginopora] reticulata (Ubaghs), 1865, Verh. nat. 
Verein. pruss. Rhein. Westphalens, vol. xxu. p. 55, 
pl. ii. a, fig.7; Maastrichtian ; Valkenberg and Geulem 
near Maastricht. 
7* 
