96 Miss J. Stephens on new 
The gemmules are numerous. They are spherical and 
occur singly towards the base of the sponge. They are 
about 0°55 mm. in diameter, Hach is surrounded by a 
thick coat of spongin. Outside this is a layer of gemmule- 
spicules, lying two or three deep and densely packed together, 
The majority are arranged more or less tangentially, but 
some are placed nearly vertically and project, giving the 
Fig. 1. 
age | Oo 
i \ 
| | 
' {+ 
| ga a 
\ bck 
% Ss 4 a 
‘cL 
Spongilla (Euspongilla) macrospiculata, sp. n. 
a, oxea, X 330; b, gemmule-spicules, x 600. 
surface of the gemmules a shagey appearance when seen 
under a low power of the microscope. ‘Tle foramen is set on 
a very low tubule, which penetrates the layer of spicules, so 
that the opening is on a level with the general surface of the 
gemimule. A few gemmules, either singly or in groups, are 
