SYSTEMATIC. 
Spong. 17 
Cliona thoosina , n, sp., Topsent, (6) p. 80, pi. vii, fig. 6. 
Cliona vastifica, Hancock, emend. Topsent, (G) pp. 46-57, pi. vii, fig. 3 ; 
to include C. vastifica , Hancock, and C. norlhumbrica, Hancock. 
Cliona gorgonoides, Hancock, and Cliona linearis , Sollas, to be classed 
as varieties of Cliona celata , Grant, see Topsent, (6) p. 76. 
Dendoryx pectinata, n. sp., Topsent, (2) p. 66. 
Desmacella aberrans , n. sp., id. (2) p. 67. 
j Epallax incrustans , n. sp., id. (2) p. 68. 
Ephydatia Jluviatilis, auct., and E. mulleri, Lieberkiihn ; for description 
see Sovinsky. 
Erylus nummulifer , n. sp., Topsent, (2) p. 70. 
Esperella Jloreum, Bwk.; for description of spiculation and skeleton see 
Hanitsch, pp. 202 & 203. 
Esperiopsis columnata, n. sp., Topsent, (2) p. 67. 
Esperiopsis polymorpha, n. sp., id. (2) p. 67. 
Esperiopsis prcedita, n. sp., id. (2) p. 67. 
Euspongilla lacmtris , auct. for description soo Sovinsky. 
Forcepia versatilis , n. sp., Topsent, (2) p. 66. 
Gellius macrosigma , n. sp., id. (2) p. 65. 
I lalichondria leuconoides, n. sp., id. (2) p. 65. 
Halisarca rubra , n. sp., Hanitsch, pp. 196 & 197, pi. x, figs. 1 
& 2. 
Ilymedesmia zetlandica, Bwk. ; for description see Topsent, (6) pp. 142 
& 143. 
Hymerapliia minax , n. sp., id. (6) pp. 141 & 142, pi. vi, fig. 17. 
Ilymeraphia tuberosocapitata , n. sp., id. (2) p. 68. 
- Joyeuxia viridis y n. g. & sp., id. (1) p. 29. 
Kaliapsis permollis , n. g. & sp., id. (4) pp. 294-296, with woodcut. 
Latrunculia insignis , n. sp., id. (2) p. 69. 
Myxilla pecqueryi, n. sp., Topsent, (2) p. 67. 
Pachastrella debilis, n. sp., id. (2) p. 70. 
Pachychalina variabilis , u. sp., Dendy, (1) p. 353, pi. lviii, fig. 3, pi. lx, 
fig- 2. 
PhaJcellia hirondellei , n. sp., Topsent, (2) p. 65. 
Plumohalichondria atrasanguinea, Bwk.; for description of skeleton and 
spiculation see Hanitsch, pp. 209 & 210. 
Plumohalichondria dendyi, n. sp., Topsent, (2) p. 68. 
Pytheas atra, n. g. & sp., id. (1) p. 31. 
Papliiodesma, aculeatum, n. sp.,«d. (6) p. 152, pi. vi, fig. 14. 
Raspailia. Topsent (4) finds that R. viminalis , O. S., is not identical 
with L. ventilabrum , Bwk., as supposed by Hanitsch, or with R. hispida, 
Bwk., as supposed by Schmidt ; but that the three species are quite dis- 
tinct. Further, that R. fascicularis , Bwk., is quite distinct from R. stelli - 
gera y O. S., with which Oscar Schmidt had identified it. But R. stelligera , 
O. S., is identical with R. stuposa , Montague. Bowerbank confounded 
under R. stuposa , two quite distinct Sponges, viz., R. stuposa , Mont., and 
R. rigida, Mont. The latter name must be resuscitated for the Sponge 
