SP0NGI2E. 
0 Spong. 
In the Appendix is given the following arrangement of the 
Honaxonida : — 
Order. JMonaxonida. 
Suborder 1 . Asemopuora. 
Family i. Ilomor aphides. 
Suborder 2. Heniscophora. 
Family i. Heteroraphulce. 
Family ii. Desmacidonidce. 
Suborder 3. Spintuaropuoea . 
a. Homo sclera. 
Family i. Astropeplidce. 
D. Heterosclera. 
Demus 1. Oentrospinthara. 
Family i. Axinellidce. 
Family ii. Dory pier idee. 
Family iii. Tethyidce. 
Demus 2. Spiraspinthara. 
Family i. Scolopidce. 
Family ii. Suberitidce. 
Family iii. Spirastrellidce. 
I V.— S Y STEMATIC. 
HEXACTINELLIDA. 
Protospongia ietranema, n. sp., Hinde (11), Dawson (4). 
Hyalostelia metissica, n. sp., Hinde (11), Dawson (4). 
Oyathophycus quebecensis , n. sp., Hinde (11), Dawson (4). 
Ischadites to be united with Receptaculites^ Geinitz. 
DEMOSPONGIiE. 
Monaxonida. 
Uruguaya repens } n. sp., Hinde (10). 
Uniguaya macandrewi , n. sp., id. 
Uruguaya pygmcea, n. sp., id. 
Meyenia to include forms under Uruguaya ; id. 
Astropeplus, n. g., A. pulcher, n. sp. ; Sollas (22). 
Desmacidon bosei , n. sp., Noll. 
Stylopus , n; g., 8. coriaceus } n. sp., Fkistedt. 
Desmacella pumicea, n. sp., id. 
Desmacella peachii, var. stellifera ) n. var., id. 
Ilastatus mamillaris , n. sp., id. 
Hastatus fragilis , n. sp., id. 
Hsperia foliata , n. sp., id. 
Chalina pulcherrima , n. sp., id. 
