No. 1614. NHW AND OLD CARBONIFEROUS FOSSILS—GIRTY. 301 
PLATE XVI. 
Celocladia spinosa, new species. 
Fig. 1. Thin section, transverse, showing the well-defined cloaca surrounded by 
a thick wall composed of a mesh of consolidated spicules, pierced 
and interrupted by branching canals which terminate in spiniform 
ostia xX 4. 
Part of a branch with the spiniform ostiz well preserved. — 
3. Longitudinal section through a specimen similar to fig. 1, x 4. The 
regularity of the spicules in this specimen suggests the structure of 
Heliospongia. 
4. Longitudinal section through a branch showing the general relations of 
the cloaca, the walls, the branching canals, and the spiniform ostia 
x 2. This is drawn from a polished surface and the spicules appear 
of a dark color instead of transparent, as in the thin sections. 
Thin section longitudinal through another specimen X 4. 
Another thin section cut transversely through a branch X 4. 
A thin section tangential, showing the somewhat irregular spicular net- 
work X 4. 
Allen limestone, Chanute, Kansas. 
iS 
1D 
Heliospongia ramosa, new species. 
8. Longitudinal section through a fragment referred to this species. 
9. Transverse section through the same X 2. These sections show fairly 
well the regular arrangement of the large spicules. The cloaca, 
though shown in a general way, is not clearly defined. 
Allen limestone, Chanute, Kansas. 
Heliospongia ramosa, var. parallela, new variety. 
10. Transverse section across one of the branches of the specimen repre- 
sented on plate 5, X 2. The structure here is ef the same type as that 
shown by figs. 8 and 9. 
Allen limestone, Chanute, Kansas. 
EA AUD HNO Ve leles 
Heliospongia ramosd, new species. 
ric. 1. The type-specimen, natural size, showing the large size, the branching 
habit of growth, and the regular arrangement of the large spicules 
such that their arms make transverse and longitudinal lines. 
Allen limestone, Chanute, Kansas. 
VAC NGVplaloles 
Heliospongia ramosa, var. parallela, new variety. 
Fic. 1. The type-specimen, natural size, showing the peculiar branching, differ- 
ent from the typical variety. A thin section from this specimen is 
illustrated on Plate XXV. This same slab shows several specimens of 
Heterocelia beedei. 
Allen limestone, Chanute, Kansas. 
