1905. | SPONGE CLATHRINA CONTORTA. 15 
Text-fig. 5, 
Spicules of Leweosolenia, Sycon, and Clathrina. 
Figg. 7 a-7 1. Spicules of a specimen in Norman’s collection, received from Bower- 
bank with label Leuwcosolenia contorta and identified by Haeckel as Ascandra 
contorta ; showing spicules of Leucosolenia variabilis (7 a-7j), mixed with 
spicules of Sycon sp. (7k, 71).—Figg. 8a-8m. Spicules of a specimen in 
Norman’s collection received from Bowerbank with label Leucosolenia contorta ; 
showing spicules of Leucosolenia complicata (8 a-8j) mixed with spicules of 
Clathrina coriacea (8 k-8m), 
