18 
CRETACEOUS CILIOPODA 
2. Membranipoka auriculata, StoUczka, PI. II, Eig. 4. 
Memh. cellnlis in seriebus regularihits alternantihus 2 )osilis, elongatis, iwstwe 
angnstatis et soUdnlis, anlice latiorihns alque apertimi magna, incUstincte marginata, 
regnlariterqne omta inst metis ; cwiculariis duobus supi'a aperturam sitis, pxirrAs 
cdque p>lns mimisve tumescentlhns. 
A species with comparatively very small cells, arranged in very regular alter- 
nating series. The cells arc elongated, much narrower at the base, and with a solid 
smooth covering ; the anterior half, or more, of the front snrface is widened, and 
nearly all ocenpied hy very rcgiilarly oval wide apertures. The furrows between the 
cells are sometimes scarcely traceable. Each cell has above the aperture two small, 
slightly tumid avicularia, and as the cells of the colony are arranged in quincunx, 
it gives the appearance of each of them being surrounded hy six raised pores. 
Locality. — North of PoodoopoUiam, forming very thin coverings on Terebratnla 
s 2 ib-dep>ressa, Stol. 
Formation. — Arrialoor group. 
VII. ESCnARINELLA, F Orbigny, 1851, (see p. 10). 
1. Escearinella discors, Stoliezha, PI. II, Eig. 1. 
E. colonki late foUacea; cellulis planis,fere regnlariter liexagonis, interdnmqne 
modice elongatis, carina snboblusa circumdatis, laivigatis ; apertura in parte antica 
paulo dejrressa sit a, snb-qnadrate semilunar i, labi'o intns lamina parva descendente 
instructo, labio fere recto sen paulisper flexuoso. Ovieellulis subrot nndat is, clausis, 
aut supra labrum late apertis, ostii margine superiore elecato, liipposideriformi, 
margine inferim'e medio breviter Unguiforme producto ; nonnunquam ovieellulis in 
facie omnino apertis, vel ctiam obsoletis. Fissoribus elongate ovatis, ntrinqne ad 
terminuiionem sub-obtuse angulatis, medio depmessis, quaque ostio ovali instructo. 
This is an extremely variable species and closely allied to several European 
species described from the Chalk of France and from Maastricht, but the com- 
paratively large size and form of the apertures and of the slitters readily dis- 
tinguish it. On the average the cells arc almost regular, hexagonal, sometimes in 
longer stems moderately elongated, with smooth, flat anteriorly somewhat depressed 
surface, and surrounded by elevated ridges on which the finely impressed lines, 
separating the cells, are scarcely traceable. Tlie aperture is moderately large, some- 
what angularly semilunar, with scarcely thickened margins. The upper lip has 
inside a small descending lamina, and the lower lip is nearly straight, or very 
slightly undulating. 
The ovicells arc rounded, semiglobose, entirely closed, or open in front, the 
upper lip forming a horse-shoe-shaped thin margin, while the lower lip is slightly 
produced in the centre. Sometimes the elevated upper lip is broken away, and 
then the ovicells appear as rounded or ovate depressions, and in other cases they 
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