10 Spong. 
SPONGIiE. 
Subfam. 1. Aulenince. 
Subfam. 2. Spongince. 
The Aulenince include the genera || Haline, [| Aphrodite , 
Anlena, Halmopsis , all new. 
The Spongince include the genus JEuspongice , Broun, 
which is subdivided into seven subgenera. 
Sollas (44) proposes the following classification of the Sponges:— 
Class 1. Plethospongice. Class 2. Calcispongice. 
The Plethospongia are subdivided into 3 sub-classes, Hexactinellida, 
Demospongia , and Myxospongice ; the Demospongia into the two tribes 
Monaxonicla and Tetractinellicla ; the Monaxonida into the orders Mon - 
axona and Cercitosa ; and the Tetractinellicla into the orders Choristicla 
and Lithistida. 
Vosmaer (47) proposes the following classification of the Sponges :— 
PORIFERA. 
Class 1. P. calcarea. Class 2. P. non-cede area. 
Class 1. P. calcarea. 
Order I. IIyalospongi^e = Hexactinellida , autt. 
Suborder i. Dictyonina, Zittel. 
Fatn. 1, Euretidce ; 2, Coscinoporidce ; 3, Millitionidce ; 4, 
Ventriculitidce ; 5, Staurodermidce ; 6, Meandro- 
spongiclce ; 7, Calloclictyonidce ; 8, Gceloptychidce. 
Suborder n. Lyssakina, Zittel. 
Fam. 1, Receptaculitidce ; 2, Monalciche ; 3, PleionaJcidce ; 4, 
PollaJaclce. 
Order II. Spiculispongigs. Skeleton very seldom absent. Scle- 
rites, when present, independent spicules, which, when 
they form a rigidly consistent skeleton, do so by the 
interlocking of peculiar tubercular outgrowths, but 
never by “ soldering,” as in the Hyalospongice. They 
are often united into a fibre by means of organic 
material. 
Suborder I. Lithistina. [The further subvision of this group 
is according to Zittel.] 
Suborder II. Tetractina. 
Fam. 1. Geodiclce. (Genera, Geoclia , Lmk., Isops, Soil., 
Synops , Yosm., Pachymatisma , Bwk., Cydonium, 
Fleming, Caminus , O. S.) 
Fam. 2. Ancorinidce. (Genera, Stelletta , O. S., Papyrula, 
0. S., Ecionema , Bwk., Thenea, Gray, Dercitus, 
Gray, Agardiella , Marshall, Sphinctrella, 0. S., 
Ancorinci, O. S., Tribrachion, Weltner, Tethyopsis, 
Stewart, Tricentrium , Ehlers, Ophiraphidetes , 
Carter?, Craniella, O. S., Tetilla, 0. S.) 
Fam. 3. Placinidce. (Genera, Placinci , F. E. S., Placortis , 
F. E. S., Placinastrella , F. E. S.) 
Fam. 4. Corticidce. (Genus, Corticium , 0. S.) 
