SPONGIDA. 
6 Spong, 
George’s Banks, North America ; also (13) south of Franz Josef Land 
(p.93). 
Hyalonema horeale^ Lov., (13) p. 93, figured, taken with the preceding. 
SoLLAS thus classifies the Hexactindlida (23, under fossil forms) ; — 
I. Stauronemata. Skeleton spicule rectangular. 
1. A. Farrea. Simple nodes ; skeleton one layer thick. 
B. Stauronema. Simple nodes ; skeleton several layers thick. 
2. Venti'iculitidce. Octahedral lantern at nodes. 
II. Aphrocallistidce. Skeleton spicule-rays making any angles. 
III. Fuplectellidce. Skeleton spicules cemented into ladder-like fibre. 
Order Oalcarea. 
Ascetta primordialis and H. clathrus (vide infrd^ under Development). 
New (Kecent) Genera and Species. 
Carnosa. 
Chondrilla mixta, Red Sea, distincta, pi. ix. fig. 19, Ponap^, Schulze, 
(17), pp. 113 & 116. 
Ceratina. 
Halispongia stdlifera, Bowerbank (1), p. 460, Geelvink Bay, New 
Guinea. 
PSAMMONEMATA. 
Polyfihrospongia, Bowerbank (1). Differs from Spongia in the fasci- 
culation of primary and secondary fibres into bundles, and in being Ecto- 
psammonematous (i.e., in having the fibre externally encrusted). For P. 
flahellifera, p. 459, Geelvink Bay, New Guinea. 
Carteriospongia, Hyatt (8), p. 540. Near Phyllospongia. Of frondose 
flabella, anastomosing to form a “ head ; ” fibre like Spongia, arranged 
symmetrically. For C. radiata, p. 541, Zanzibar, Madagascar, mada- 
gascarensis, p. 642, Madagascar, vermifera, p. 542, perforata, p. 643, 
Philip’s Island, Australia, and C. (?) mystica, p. 643 (perhaps Spongia 
lignea, Esper), Adelaide Is., South Australia. 
Hircinia arbusculum, id. 1. c. p. 548, Kingsmill Islands. 
Kalli8pongia[^Calli-\ Wright (11). A stalked, inferiorly jointed, 
superiorly quadripartite, Crinoid-like form, of a reticulated horny sub- 
stance (doubtful whether a sponge). For K. archeri, id. 1. c. p. 754, pi. xl. ; 
on Delesserice, Australia. 
Mauricea, Carter (4). Agrees in outward structure with Garterio- 
spongia, Hy. {vide supra), but has the fibre coated in “ ecto-psammo- 
nematous ” fashion. M. lacinulosa, p. 174, Mauritius. 
Echinonemata. 
Ophlitaspongia meyeri, Bowerbank (1), p. 456, Kordo, New Guinea. 
Higginsia, Higgin (7), p. 291. Belongs to group Pluriformia, order 
Echinonemata, Cart. ; skeleton and echinating spicules, smooth curved 
acerate ; flesh spicules, spined acerate ; flabelliforra. For H. coralloides, 
id. ibid. pi. xiv, figs. 1-6, Grenada, W. Indies ; also varr. liberiensis, Cape 
Palmas, and arcuata, Bantry Bay. 
Holorruaphidota. 
Isodictya aspera, Bowerbank (1), p. 458, Abu, Philippines. 
