Knowledge of the Spongida. 253 
Halisarca mimosa, Giard. English Channel. 
cruenta, Carter. Atlantic Ocean, Cape St. Vincent. 
Gummina gliricauda, Sdt. Adriatic. 
—— ecaudata, Sdt. Adriatic. tie 
Chondrosia reniformis, Nardo ap. Sdt. Adriatic. 
—— plebeja, Sdt. Algiers. 
—— tuberculata, Sdt. Adriatic. 
Family 2. Gumminida. 
Char. Possessing spicules. 
Chondrilla nucula, Sdt. Adriatic. 
———- embolopora, Sdt. Antilles. 
australiensis, Carter. Port Jackson, Australia. 
—— sacciformis, Carter. Mauritius. 
Corticium candelabrum, Sdt. Adriatic. 
—— plicatum, Sdt. Algiers. 
stelligerum, Sdt. Algiers. 
—— abyss, Carter. Entrance to English Channel. 
Kittoni, Carter, prov. Colon, Panama. 
—— versatile, Sdt. St. Vincent, West Indies. 
Sarcomella medusa, Sdt. Algiers. 
Osculina polystomella, Sdt. Algiers. 
Grayella cyathophora, Carter. Red Sea, 
Columnitis squamata, Sdt. Antilles. 
Latrunculia corticata, Carter. ? Red Sea. 
OBSERVATIONS. 
In noticing the filamentous feltiform trama of Chondrosia 
reniformis I have stated that this structure demands “ distinct 
consideration ;” for the element of which it is composed is so 
generally developed among the Spongida that it may be said 
to form one of their constituent parts ; hence it not only de- 
serves a distinct notice, but also a distinct appellation, and 
therefore will be described under the following name :— 
Hlastic Tessue. 
I first alluded to this woof or texture in 1873, in these 
words, viz. :— 
“Thus, although in the Gumminee there is no ‘ sponge- 
skeleton-fibre, so to speak, the cuticula and a great part of 
the body is made up of fine intercrossing filaments, which are 
so soft that, on drying, they all sink their form into a common 
homogeneous mass like hard glue” (No. 17, p. 20). 
