96 



]\Iiss J. Stephens on new 



Tlic genumiles are numerous. They are spherical ami 

 occur siiiiily towards the base of the sponge. Tliey are 

 a'loiit 0'55 mm. in diameter. Each is surrou'ided by a 

 tiiick coiit of spoMgin. Outside this is a layer of gxMiimuIe- 

 spieuh's, lying two or three deep and densely [)acki'xl t.)^ethor. 

 T!ie majority are arranged more or less tangential ly, but; 

 sj :ie are pLiced neaily vertically and project, giving the 



Fiff. 1. 



\ ( ry ,C, ^\ 



I 

 ( 



Sponyilla {Euspo7iyilla) macrospiculata, sp. n. 

 a, oxea, X 330 ; b, gemmule-spiculea, x 600. 



suiTucc of the gommnles a shaggy appearance when seen 

 uiuhr a low I 0\ver of the microscope. Tiie foramen is set on 

 a very Idw tubule, which penetrates the layer of spicules, so 

 tiiat the opening is on a level with the general surface of the 

 ge;ninule. A f w gemmules, either singly or in groups, are 



