SYSTEMATIC. Spontf. 11 
Devonian: — Hamilton group, Indiana, nn. spp. of Hindia , Sompho- 
spongia , and Vermispongia n. g. ; Whitfield (45). 
Silurian : — of Victoria and Queensland, spp. of Receptaculites ; Chap- 
man (5). 
Ordovician: — Chazy-formation, Eospongia varians and Strephochetus 
spp. ; Seely (33). 
IV. SYSTEMATIC. 
A. PORIFERA, GENERAL. 
The Non-Calcarea considered as a class and divided into Myxospongida, 
Triaxonida, Tetraxonida, and Euceratosa, “four natural groups... 
which may he conveniently regarded as of ordinal rank” ; Dendy (8) 
p. 60. 
List of sponges from coasts of S. America, Mexico, and Galapagos Is., 
nearly all cited as “nov. spp.,” but without descriptions : Wilson (46). 
Catalogue of type- specimens of palaeozoic sponges in the New York State 
Museum : Clarke (6). 
B. CALCAREA. 
(i) H0M0C(ELA. 
Clathrina ( Ascandra , Leucosolenia) contorta Bwk., description and syno- 
nymy : includes Ascetta spinosa Lend. : Minchin (23). 
Leucosolenia Bow., defined ; Dendy (8) p. 226. — L. ( Clathrina ) coriacea 
Mont., var. ceylonensis , 4i. var. : Dendy (8) p. 226, 227, pi. xiii, fig. 8. — 
L. eleanor , n. sp. Monterey Bay, California : Urban (39) pp. 36-55, 
pi. vi, figg. 1-62, pi. vii, figg. 63-68. — L. {Clathrina) tenuipilosa y n. sp., 
Ceylon seas : Dendy (8) pp. 227, 228, pi. xiii, fig. 9. 
(ii) H ETEROCCEL A . 
Amphoriscidce , defined : Dendy (8) p. 229. 
\Eudea sp. : Blaschke (3) p. 165. 
Grantia compressa, spicule-formation : Woodland (47). 
Grantiidce, defined : Dendy (8) pp. 228. 
Heteropegma Polej., defined, p. 230 ; H. nodus-gordii Polej., p. 230 : 
Dendy (8). 
Leucandra H., defined ; Dendy (8) p. 228.— L. apicalis , n. sp., Monterey 
Bay, California : Urban (39) pp. 67-70, pi. vii, figg. 89-107. — L. 
donnani , n. sp., Gulf of Manaar : Dendy (8) pp. 228, 229, pi. xiii, 
fig. 10. — L. heatki, n. Sp., Monterey Bay, California : Urban (39) 
pp. 59-67, pis. viii, ix. 
Rycon seu Sycandra, S. coacta , n. sp., Monterey Bay, California : Urban 
(39) pp. 55-59, pi. vii, figg. 69-88. — S. ciliatum and S. coronatum , 
spicule- formation : Woodland (47). 
C. HEXACTINELLIDA. 
(i) LYSSACINA. 
\ Receptaculites australis , pi. i, figg. 2-7, pi. ii, pi. iii, figg. 2-7, pp. 7-9 ; 
Queensland specimens, pp. 9-1 2 : Chapman (5), P. Soc. Victoria xviii. — 
t R. fergusoni , n. sp., Silurian, Gippsland : Chapman (6) p. 6, ph i f 
figg. 1, 3, and pi. iii, fig. 1, P. Soc. Victdria xviii. 
