440 
DR. G. J. HINDE ON BEDS OF SPONGE-REMAINS IN THE 
point, the head-rays all bifurcate, and in perfect specimens acutely pointed. Length 
l'l to 1'6 mm., width - L3 to '2 mm.; rays '33 mm. long, by GIG mm. in thickness. Fio-. 
3c is probably the head of one of these spicules seen from beneath. Fig. 36 shows 
the peculiar manner in which the infilled canal has been distorted and broken up. 
L. G. S., Haslemere. 
21. Geodites obtusus (Plate 42, figs. 4, 4a).—Zone spicules robust, with straight 
shafts, usually slightly constricted near the head ; below this they are tumid arid 
then gradually taper. The rays are short, unusually thick, bifurcating near the 
summits, and forming short obtuse cones. Total length unknown ; width '35 mm.; 
rays ’35 mm. in length, by ’175 mm. in width. 
L. G. S., Sevenoaks (Folkestone Division). 
22. Geodites politus (Plate 42, figs. 5-5c). —Zone suicides, with straight, elongate, 
very gradually tapering shafts, and head-rays usually bifurcate, the terminations 
evenly rounded. The shafts incomplete in length, from '17 to ’22 mm. in thickness. 
The rays '25 by - 125 mm. Fig. 5b is probably the head of one of these spicules seen 
from below. 
In the same beds an “ anchor ” spicule occurs (fig. 5c), with rounded head and three 
short, simple, recurved rays, which probably belongs to the same species as the zone 
spicules. 
L. G. S., Folkestone, Tilburstow Hill. U. G. S., Merstham. 
23. Geodites pusillus (Plate 42, figs. 6-66).—Zone spicules, with straight or slightly 
curved shafts, usually constricted just below the rays ; below this slightly tumid, and 
then gradually tapering. The rays are relatively short, simple, conical, and acutely 
pointed. Length 1‘25 to 2 mm. ; width ‘125 to '2 mm. Pays '15 by '075 mm. 
L. G. S., Haslemere, Tilburstow Hill. 
24. Geodites Haldonensis, Carter (Plate 42, figs. 7-76,16,16a ; op. cit., p. 129, Plate 
10, figs. 58-67).—Zone spicules, with straight or curved, elongated, tapering shafts 
and straight or curved head-rays, either simple or bifurcate. Length P5 to 2 - 5 mm.; 
width '075 to 11 mm. The rays '175 by '075 mm. Mr. Carter has called attention 
to the different aspect of some of these spicules with curved shafts and simple rays, 
(figs. 76, e), and suggests that they might belong to a different species. There are, 
however, intermediate forms between these and the spicules with bifurcate rays which 
indicate that they may all pertain to a single species. The “ anchor” spicule (fig. 16) 
from the same beds was probably associated with these zone spicules. In comparing 
Mr. Carter’s figures with those which I have given, allowance must be made for the 
different scale on which they are drawn, Mr. Carter’s being on the scale of Tf-, whilst 
mine are only - x —. 
L. G. S., Sevenoaks. U. G. S., Haldon, Blackdown. 
25. Geodites clivergens (Plate 42, figs. 8, 8a, 11-116).—Zone spicules, with short, 
stout shafts, straight or curved, gradually tapering, and terminating obtusely. The 
canals are prominent, and usually dilated at the extremity of the shaft. The rays are 
