472 
is obliquely upwards, reaching the dermal-membrane at nearly right 
angles. The dermal-membrane is very delicate, supported by rather 
few tangentially but irregularly placed tylota and raphides; these 
latter are also distributed throughout the entire body of the sponge. 
Spicules. a. Megascleres. 1. S ty li (fig. 25 a), up to 430 x il 
slightly curved in the first half part, evenly thick in the greater 
CL 
Fig. 25. Tedanione connectens nov. spec. 
a. Style. b. Tylota. c. Ends of Tylota. d. Raphides. 
part, apex tolerably sharp-pointed. 2. Tylota (fig. 25b—c), straight 
or a little (seldom strongly) curved; beautiful oval heads, which are 
spined at the top; about 300 X 6 //. 3. Tor nota, ca. 160X3//., 
very scarce, probably not belonging to the sponge. b. Microscleres. 
Raphides (fig. 25 d), up to ca. 200 x i /f, finely spined at the 
ends, straight or curved, numerous. 
This species is very interesting in still having stylote spicules 
as an integrating part of the main skeleton, thus retaining a remini- 
scence of the monactinal skeleton of Tedania; it gives the due to 
