BATTERSBYIA, PALtEOCYCLUS, AND ASTEROSMILIA. 
645 
surface of the corallum is finely granular. The septa are fourteen in number. The 
diameter of the corallum is about 1^ line. 
The species is found with H. grandis. 
3. Heterophyllia granulata, sp. nov. Plate XXXI. figs. 1 a- 1 d. 
The corallum is long, slightly flexuous, and more or less cylindrical ; it is rendered 
irregular in shape from alternate constrictions and swellings of the wall. The costse are 
numerous, flexuous, rounded, unequal, and coriaceous ; they bifurcate and project but 
slightly. The intercostal spaces are grooved, shallow, narrow, and wavy: they are 
narrower than the costse. The horizontal section is nearly circular. The surface of the 
corallum is finely granulated. The septa are nineteen in number, thin, and often 
unite, to form five principal sets. The diameter of the corallum is inch at the 
swellings and inch at the constrictions. 
In the Carboniferous series of Fifeshire. 
4. Heterophyllia angulata, sp. nov. Plate XXXI. figs. 2 a - 2 d. 
The corallum is long, flexuous, and rather angular in its transverse outline. The 
costse are numerous, unequal, projecting, close, faintly granular, and coriaceous ; they 
are usually eighteen in number, are rather sharp at the free edge, and smaller there 
than at their base. The intercostal spaces are unequal, concave, rather deep, narrow, 
and coriaceous. The horizontal section of the corallum is angular and irregular. The 
surface of the corallum is finely granular. The septa are seventeen in number, thirteen 
large and four small ; they are arranged in five groups : the largest septa are nearly 
straight, and one is solitary and larger than the others. The small septa reach and become 
united to those nearest to them. The longest septa are joined by a lamina which 
stretches across the axial space*. The endotheca is very abundant, and stretches across 
the interseptal spaces, the concavity being outwards. The wall is thin and partly com- 
posed of very close endothecal cells. There is some vesicular endotheca. The diameter 
is inch. 
The species is found in the Carboniferous strata of Brockley, Lesmahagow, Lanarkshire. 
5. Heterophyllia M‘Coyi, sp. nov. Plate XXXI. figs. 3 a- 3 c. 
The corallum is tall, nearly straight, and is hexagonal in its transverse outline. The 
costse are small, projecting, rounded, six in number, without ornamentation, and are 
grooved here and there. The intercostal spaces are very wide, shallow, slightly concave, 
nearly equal, and are marked occasionally with faint linear and festoon-shaped depres- 
sions. The horizontal section shows the wall to be stout and hexagonal ; it is concave 
between the angles. The surface of the corallum is smooth. There are six septa, which 
unite centrally to a linear septal columella. The endotheca is very abundant. The 
diameter of the corallum is yo inch. 
The species is found in the Carboniferous strata of Brockley, Lesmahagow, Lanarkshire. 
* See Anatomy of Sclerenchyma, Brit. Eoss. Corals, 2nd series, pt. 1, P. M. Duncan, Pal. Soc. 1866. 
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