260 ‘THE ATLANTIC. [CHAP. IV. 
that apparently the graceful, round-neshed, wide netting of the 
under surface does not appear in the early stages. 
ee 
Fia. 68.—Hyalonema toxeres, WyV1LLE Tuomson. Part of the membrane from the upper sur- 
face, x 40. (No. 24.) 
The coil is developed much in the same proportion and in 
the same way as in //. Lusitanicum, the fibres spreading out and 
incorporating with the sponge substance. The characteristic 
bow-like spicules are abundant in the young sponge, and these, 
with the large Amphidisci, place it beyond a doubt that it is 
the young of /7/. toxeres. 
A quantity of loose spicules brought up in the dredge at the 
same time were referred to this species. ‘They were somewhat 
stouter than those of //. Lusitanicum, and less regular in out- 
line. There was one coil nearly complete, involved in a ealea- 
reous expansion of a branch of Diplohelia profunda. Two very 
