Paleozoic Corals and Foraminifera. 19 
the small flattened axis in the centre: horizontal section, divi- 
sional lines of the stars thin, straight ; axis thin, half a lme 
~ wide ; radiating lamelle thirty-six, thin, one half extending mm 
a flexuous manner from the walls to the centre, the inter- 
vening ones also flexuous but of irregular lengths, most of 
them reaching half-way ; transverse vesicular plates very few 
and delicate, if visible at all: vertical section, axis as in the 
other species ; inner area very wide, of large, little-curved ve- 
~ sicular- plates, inclining obliquely downwards and outwards ; 
one or two lengthened irregular cells reach from the axis to the 
outer area; outer area very narrow, of small, much-curved ve- 
 sicular plates inclining very obliquely upwards and outwards, 
- forming minute rounded cells about two in a row. 
_ This species much resembles some of the massive Astreoid 
Chsiophyllia of Dana by the conical tent-like aspect of the inner 
area within the cups or weathered terminal cells; the distinct 
flattened axis, resembling that of the other Nemaphyllie, will 
however distinguish it. The flexuous character of the radiating 
lamellze in the transverse polished section is remarkable. The 
Astrea irregularis of Portlock’s ‘ Report on Londonderry,’& c 
which I know to be a true Nemaphyllum, resembles this species 
in the small size of the stars and flexuous lamelle, but is easily 
distinguished by the cells being simply cup-shaped, descending 
uninterruptedly from the walls to the small, flat, prominent axis 
in the bottom of the cup, instead of the large tent-like boss 
formed by the inner zone of the above. 
Forms irregular tuberose masses in the carboniferous limestone 
of Derbyshire. 
(Col. University of Cambridge.) 
Nemaphylium septosum (M‘Coy). | 
Sp. Char. Corallum of long, inseparable, slightly diverging five- 
or six-angled tubes, with an average diameter of 5 lines: ver- 
tical section, axis straight, thin, flat, three-fourths of a line 
wide; inner area composed of large, rather distant, slightly 
arched plates, each of which generally extends across the en- 
tire area, so that one lengthened cell (rarely more) reaches 
from one side to the other of this area, having the axis in the 
middle ; outer area broad, of numerous minute, much-arched 
vesicular plates inclining obliquely upwards and outwards, 
about four of the little cells in the oblique line from the inner 
area to the outer wall: transverse rough fracture showing the 
inner area to be composed of slightly conical or cup-shaped 
_ plates, their diameter equal to that of the area, and pierced in 
the centre by the flat persistent axis: polished transverse sec- 
: 2% 
