NEW GENERA AND SPECIES. SfOlig, 14 
figs. 1-3, Gulf of Naples. Has a horny and spicular axis, like that of 
A xinella 2)olypoides, hut with, a stalk and tuft of root fibres. Spicules 
spinulate, the points of the outer ones projecting through the dermis. 
[Apparently a Suberitid, and therefore not placed with the Echino- 
nemata.l According to Schmidt, Arch. mikr. Anat. xviii. p. 282, what 
is apparently a variety of this has beennbtained at Marseilles ; the species 
probably belongs to the Saheritidm. 
Tethyophcena^ Schmidt, Arch. mikr. Anat. xviii. p. 281. Based on T.’ 
silifica, id, ibid.^ Gulf of Naples. Shape, blunted conical. In internal 
structure like Teihya, with bundles of acerates ; but there are, besides, 
irregular tubular or nodular siliceous masses. 
Archceoclmia, Czerniavsky, (2) p. 243. New subgenus of Cliona [men- 
tioned in Zool. Rec. xv.], based on C. labyrinthica, Hancock, &c. [sw/;m, 
p. 7]. Characterized by its simple fusiform acerate or doubly-bluut spicules. 
Thoosa socialis, Carter, (1) p. 57. As minute growths with other 
Sponges, in excavations in Melobesian nodules ; Gulf of Manaar. 
Dotona, Carter, (1) p. 57. Based on D. pulchella, id. ibid. pi. v. fig. 24, 
from excavations in Melobesian nodules ; Gulf of Manaar. Forms a mass 
charged with 3 kinds of spicules; the first, cylindrical, curved, aud verti- 
cillately micro-spined ; the second, hair-like, acerate ; the third, minute 
cylindrical, spined at centre and ends. 
Alectona Mggini, Carter, (1) p. 58, pi. v. fig. 25. In excavations in 
Melobesian nodules ; Gulf of Manaar. 
Samus simplex, Carter, (1) p. 60, pi. v. fig. 26. In excavations in Melo- 
besian nodules ; Gulf of Manaar. S. complicatus, id. ibid. p. 61, pi. v. 
fig. 27 ; from base of Eaplectella cucumer, off the Seychelle Islands. 
Fhoriospongia, Marshall, (7) p. 122. Spicules acerate, spinulate, and 
bihamate ; a separable dermis ; the sponges penetrate and surround 
masses of sand ; sometimes found on shells ; apparently belong to the 
Clionidce. F. solida, id. ibid. p. 122, pi. viii. figs. 12-17, Bass’s Straits. 
The dermis contained some irregularly mulberry-shaped siliceous 
bodies, similar to those described by Grant & Hancock from Vioa, and 
apparently of foreign origin. F. reticulum, id. ibid. p. 124, pi. viii. figs. 18 
& 19, Tasmania. The foreign bodies form the chief part of the Sponge, 
and show no trace of arrangement into fibres. The canals are lined by 
a fibrous, membrane, which contains bihamates and foreign bodies. 
Styloi^ryiiza, Schmidt, (9) p. 79. Founded for Ilyalonema boreale 
and longissimum, &c. 
Fangopkilina, Schmidt, (9) p. 72. Embraces species of Tetilla altered 
by growth on muddy bottom ; they possess special root tufts, and appa- 
ratus for the protection of the openings of the water-canals. Includes 
T. polyura, euplocamus, and radiataf and F. submersa,sp. n., id. 1 . c. p. 73, 
pi. X. fig. 3, Caribbean Sea. 
Tisiphonia fenestrata, Schmidt, (9) p. 71, pi. x. fig. 2. Form various; 
Caribbean Sea and Florida Cbanuel, 955-1591 fath. 
Tisiphonia nana, Carter, (1) p. 138, pi. vii. fig. 43, T. annulata, id. 1 . c. 
p. 140, pi. V. fig. 28, T. penetrans, id. 1 . c. p. 141, all from Gulf of Manaar, 
the last occurs in excavations. The author describes them as provisional 
new species, stating his belief that they are all varieties. 
