SYSTEMATIC. 
Spong . 15 
CORNACUSPONGIJE. 
Marine Forms (24, 27, 49, 50, 51). 
Menanetia , n. g., Topsent, Mem. Soc. zool. France, ix, p. 115. 
Pozziella , n. g., Topsent, Bull. Soc. zool. France, xxi, p.147. 
<G oniphostegia, n. g., Topsent, t. c. p. 149. 
Topsent, Mem. Soc. zool. France, ix, describes the following new 
species : 
Menanetia minchini , p. 116; 
Rhabderemia spinosa , p. 121 ; 
Vosmaeria laevigata , p. 128 ; 
Axinella agitata, p. 129, guiteli , p. 130, padina , p. 131, pedunculata , p. 131, 
pcrlucida , p. 132. 
Topsent, Bull. Soc. zool. France, xxi, describes the new species : 
Poziella clavisaepta , p. 147 ; 
Gomphostegia loricata, p. 149. 
Leptosia Icoekleri , Totsent, Ann. Univ. Lyon, 1895, ii, p. 285. 
Lamije, Tr. R. Soc. Canada, (ser. 2) ii, sect. 2, describes the new species : 
Esperella modesta , p. 188 ; 
Clathria delicata , p. 192. 
Kieschnick, Zool. Anz. xix, describes the following new species : 
Halichondria incrustans , p. 530, fragilis, p. 531. 
Siphonochalina claviformis , p. 531. 
Rhizochalina crassispic-ula , p. 531. 
Gellius truncatus , p. 531, irregularis , p. 531. 
Toxochalina ternatcnsis , p. 532. 
Cladorhiza depressa , p. 532. 
Desmacidou fragilis, p. 532, nodosus , p. 532, tenia tensis , p. 532. 
Chondrocladia ramosa , p. 532. 
Myxilla ramosa , p. 533. 
j Raphidophlus ramosus , p. 533. 
Thrinacophora incrustans , p. 533. 
Gellius fiagellifei'y Ridley & Dendy, redescribed ; Topsent, Ann. Univ. 
Lyon, 1895, ii, p. 280. 
Desmacella annexa , O. Schmidt., redescribed ; Topsent, £. c. p. 281. 
Rhizaxinella elongata , Ridley & Dendy, redescribed ; Topsent,*. c. p. 290. 
Spongillid/E (3, 11, 42, 48, 52, 53, 55, 57). 
-\ Epliydatia lendenfeldiy Tkaxler, Foldtani Kozl. xxvi, p. 27, n. sp. 
Ephydatia Icahahuensisy Traxler, Termes. Fuzetek, xix, p. 32, n. sp. 
Lubomirslcia tscherskii, Soukatsciioff, Trav. Soc. St. Petersb. xxv, 2, 
p. 4, n. sp. 
L.fusifera, Soukatsciioff, *. c. p. 6. 
Soukatsciioff (48) gives an account of various species of Lubomirslcia. 
Doubtful Forms (23, 28, 41). 
Jennings (23) shows that the organism described by Duncan as a para- 
sitic calcareous Sponge, under the name Mobiusispongia , is not a 
Sponge, but, a Foraminifer. 
Rauff (41) proves conclusively that the structures described by Cayeux 
(vide Zool. Rec. 1895) as spicule remains of Precambrian Sponges, are 
not of organic origin, but growing pyrites. 
The Recorder (28) expresses his doubts about the Sponge nature of the 
structures described by ILekel as Deep Sea Keratosa. 
