11 . 
CRETACEOUS ECHINODERMATA 
angustato ; antero-latemlihus posticis modice lo7igioribus, poris jjcn'vis approximatis 
instriictis ; regionihm huccalihm convexiuscuUs. 
Test ovately cordiform, Avith rounded anterior lobes and somewhat angular at 
the sides; upper surface moderately convex, sides roundly sloping, cheeks and 
post-oral region slightly convex, the latter is hounded on either side hy shallow 
furrows ; entire surface covered with comparatively large tubercles. The ambu- 
lacra are all deeply impressed, the anterior widest, hut becoming considerably 
narrower and shallower at the periphery and on the lower side. One of the postero- 
laterals has about 20 pairs of pores in a series, and is fully twm-thirds as long as 
one antero-latci’al, which has about 38 pairs ; both pores in each pair are 
small, connected by a fine groove ; the pairs lie very close together, except the few 
last ones which become slightly more distant and approach each other towards the 
middle line ; the antero-laterals form an angle of 95 degrees, the postcro-laterals 
of 52 degrees. The aperture is one-fourth of the length of the test distant from 
the anterior end. The peripetal fascicle is not distinctly traceable. 
The greater length of the postcro-lateral ambulacra, and the rounded anterior 
periphery readily separate the present species from the previous, and the great 
number of small closely set pores in the ambulacra differ from those of any other 
known species of equal size. 
Locality. — South of Moraviatoor, in brownish nodular limestone. Besides the 
figured specimen, there is one very small (11 m.m. long) specimen from the same 
locality ; it is considerably more depressed, but does not differ in other respects. 
Formation. — Ootatoor group. 
6. IIemiaster iNiEQTJALis (ForhesJ . PI. II, Eigs. 2 — 3. 
1846. JBrissus inmqualis, Forbes, Trans. Geol. Soc., Lend., vii, p. 160, pi. xix, fig. 6. 
1855. Hemiaster id., apud D’Orbigny, Pal. Fran?, terr. cret. vi, p. 267. 
1858. Periaster id., apud Uesor, Synop. Eob. foss., p. 388. 
F[. testa depresse hemisplierica, amhita orhiculari-cordato, ad peripheriayn suh- 
angidata, mfra planata, lateribus fere tmiforme convexe declioibus, postice anguste 
trimcata, supra dense granutata, scepissime sub-lcevigata, fasciola indistincta in- 
structa, infra dislinctins luberculifera, regione ante-orali lateraliter plana aut fere 
concaviuscula, 2 >ost-orali convexiuscula., elongate elliptica; vertice subcent>‘ali; am- 
bulacris valde ineequaUbus, sulco antico supra modice concavo, ad peripheriam pro- 
fundissimo, sed vix latiore, ambulacris antero-lateralibus posticis multo longioribus, 
omninis terminaiionibus truncatis ; apertura prope marginem anteidorem sita. 
Test roundly cordate and almost regularly convex, slojiing towards the sides, 
posteriorly narrowly truncate and below generally fiattened ; the ante-oral space 
being quite flat or almost concave, and the post-oral elongately ovate and moderately 
convex ; the aperture lies very close to the anterior margin, its distance from the 
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