CRETACEOUS ECHINODERMATA, 333 
Goniaster (Goniodiscus) Bowerbankii. (Tab. XXII. fig. 4.) R. 3. 
Body pentagonal, sides very slightly lunated, superior intermediate marginal 
plates eight, rather narrowly oblong, flattened, margined, punctate. Inferiors 
similar. Superior oculars triangular, obtuse, punctate. Ossicles of the disc gra- 
nulated. 
Rather larger than G. Parkinsoni, and easily distinguished from all its allies by 
the eight superior intermediate marginals. 
From the upper chalk of Kent. 
Goniaster (Goniodiscus) compactus. (Tab. XXII. fig. 3.) R. 4. 
Body pentagonal with straight sides. Superior intermediate marginal plates 
six, very narrow, tumid along their centres, smooth except at their edges where 
there is a row of punctations, abrupt at their sides with rounded angles : inferiors 
rather wider and not so abrupt. Superior oculars triangular, shorter than the 
laterals, gibbosely tumid towards their obtuse points. Ossicles of disc punctate. 
About the size of G. wncatus, and intermediate in aspect between that species 
and G. rugatus, but differing materially from either. 
Upper chalk of Haughton, Sussex. In the cabinet of G. A. Coombe, Esq. 
Section II. 
Goniaster (Astrogonium) lunatus, Woodward, Geol. Norf. t. 5. f. 1. 
(Tab. XXIII. fig./7.) 
Body stellato-pentagonal, sides lunate. Each side bordered by two rows (a 
superior and inferior) of twelve or more slightly tumid, curved, oblong, lineato- 
punctate, moniliformly-pitted, narrowly margined plates. Those of the inferior 
series often bear groups of small raised tubercles. Ambulacral ossicles 4—5- 
grooved, bearing very short obtuse spines. Similar spines appear to have been 
scattered over the under surface. Ossicula of disc mostly quadrate ; punctate 
like the plates. 
Upper chalk of Wiltshire, Kent, and Sussex, from C. Pearce’s cabinet. 
Goniaster (Astrogonium) latus. (Tab. XXIII. fig. 4 & 5.) R. 2. 
Body pentagonal, with produced angles. Marginal plates of each row more 
than 20 on a side, oblong, depressed, closely and almost reticularly pitted with 
moniliform pits interspersed. Ossicles of the margins of the rays gradually 
2x 
