QENEUA, SPECIES, &C. 
8p(mg. 6 
gviislied, with S. foitidus and S. muscarum., from H. variahilis, by the 
superior diameter of their filaments, by the greater openness of their net- 
work, and the inferior firmness and lighter colour of their dermal layer. 
Balls of spermatozoa have been found with ripe ova in the same speci- 
men. 
Sarcotragus fcetidus^ (10) p. 30, = Ilivcinia ; best distinguished by its 
finger-shaped conuli. Primary fibres rounded. /S. wiMScamm, (10) p. 31, 
= Hircinia. Conuli with broad bases. 
Cacospongia mollior, Schmidt, (9) p. 649, pi. xxxiv. fig. 9, pi. xxxv. 
figs, 11-13, pi. xxxvii. fig. 11. To include C. carduelis, Schmidt. The 
flat and the upright forms differ very greatly in their skeletons. In its 
soft structure, it agrees with Euspongia officinalis on the whole. 
Cacospongia scalaris, Schmidt, (9) p. 651, pi. xxxiv. fig. 10, pi. xxxv. 
fig. 15, pi. xxxvii. figs. 6 & 12. Ova and segmentation-stages agree with 
those of Euspongia officinalis. 
Cacospongia cavernosa., Schmidt, (9) p. 653, pi. xxxiv. figs. 11 & 12, 
pi. xxxv. fig. 17, pi. xxxvii. figs. 7, 13, & 14. Ova and segmentation- 
stages as in preceding. 
Rhaphidonemata (Carter). 
Siphonochalina coriacea, (7) p. 373, pi. xxii. figs* 15-18. Food particles 
found in mesoderm only. 
Echinonemata (Carter). 
Plectroncllina, Sollas, (12) p, 26, new group of family Ectgonida, 
Carter, based on Plectronella, g. n. 
Plocarnia, Schmidt, (13) p. 47, made the type of a new group, Ploca- 
mianina, Sollas, of Ectyonida, Carter. 
Dictyocylindrus, Bowerbank, (1) p. 296, nearly allied to Tricenirium. 
Dictyocylindrus vickersi, Bowerbank, (1) p. 292, pi. xxvii. figs. 5-8, = 
Tricenirium^ Ehlers ; West Indies. 
Plectronella papillosa, Sollas, = Tricenirium muricatum, Ehlers, (1) 
p. 293, pi. xxvii. fig. 13 ; West African Coast. 
Halichondria plumosa, from Kerguelen Island, recorded by Carter, 
Phil. Tr. clxviii. 
The spicules of a Sponge, apparently nearly allied to AxoSy are described 
by F. Barnard, Q. J. Micr. Soc. Victoria, i. p. 14, pi. i. figs. 5-8, from the 
Northern Territory, Australia. 
Holorrhaphidota (Carter). 
Halichondria panicea, carnosa, sanguinea, Isodictya rosea, Thalysias 
suhtriangularis, Tethya antarctica, collected at Kerguelen Island during 
the Transit of Venus Expedition ; notes on structure, &c., by H. J. 
Carter, Phil. Tr. clxviii. pp. 286-288. 
Wyvillethomsonia wallichi and Trichostemma hemisphericum, Kors 
Fjord, Norway; Norman, J. of Conch. 1879, ii. p. 13. 
Reniera sp. The newdy-fixed larvae have an internal cavity, according 
to F. C. Noll, Zool. Anz. ii. p. 402. Under increase of temperature they 
were observed to grow rapidly to a length of 8-9 mm., and they then 
emitted light in the dark when the glass on which they grew was made 
to vibrate, id. tom. cit, p. 455. 
