GENERA, SPECIES, &C. Bpong , 5 
Spongelia elegans, Nardo, ^aZZescens, Schmidt, (6) 3. *^forma’' pontica 
mentioned for each. 
Filifera, Lieberkiihn. O. Schmidt remarks, Z. wiss. Zool. xxx. p. 661, 
that the fibrils have been isolated, and are independent of the large 
skeleton fibres ; nature still uncertain. 
Hircinia campana^ Nardo ; Spongia vermiculata^ var. vermiculatiformis^ 
Hyatt ; Spongia dubia, var. foraminosa, Hy. ; Spongelia spinosa, Hy. ; 
Dysidea fragilis, Johnston ?, from North Carolina : (4) p. 313. 
Rhaphidonemata (Carter). 
Chalina arhuscula, Verrill, (4) p. 314, from North Carolina. 
Cacochalina digitata^ Schmidt, (5) a V3x. ponticaf fig. 16, p. 395. 
P achy chalina compressa^ O. Schmidt, = Veluspa polymorpha^ Miklucho- 
Maclay, White Sea (14). 
Echinonemata (Carter). 
Microciona hihamigera^ Waller, J. Quek. Club, No. 36, p. 1, pis. i. & ii. 
described as new [cf. Zool. Rec. for 1877]. 
Microciona prolifer a ^ Yerrill, (4) p. 312, from North Carolina. 
Microciona amhigua, Bowerbank, (12) p. 370, pi. i. fig. 3, pi. ii. fig. 3, 
the anchorate spicula are tri- and not bi-dentate. 
Holorrhaphidota (Carter). 
Varieties or “/onRcr ” are mentioned, (5) pp. 392-397, and in some 
cases figured \yide infra\ of the following Sponges from this fauna : — 
Amorphina grossa, Schmidt ; Renierd fava, Grimm ; Pellina semitubulosa, 
Schmidt; Reniera alba, aquce-ductus , informis, Schmidt, palmata, Ell. 
Solander; Esperia contarenii, Martens, foraminosa, Schmidt, Cliona 
typica, Nardo. 
Reniera, Schmidt and auctt. divided, (7) p. 53, with two subgenera : 
1, with smooth spindle or staff -shaped spicula, united merely at their 
ends, e.g., R. alba, cratera ; 2, with the spicula arranged in a rectangular 
network, and wholly covered by sarcode, R. fortior and unnamed sp. n. 
Reniera palmata, (5) forma transitans, with varr. taurica, dioscurica, 
horrhippiana, figs. 2, 1, 3, 4. 
Reniera informis, Schmidt, var. taurica, (5) fig. 5. 
Reniera flava, Grimm, = Protoschmidtia grimmi, Czerniavsky (5), 
p. 343. 
Reniera flava, (7) p. 54, = Metschnikowia. 
Reniera semitubulosa, Sdt., (9) p. 565, pis. xxxvi. & xxxvii. fig. 1. A 
meshwork of lines covers the dermal surface and cavities on treatment 
with silver nitrate. Has but two body layers, the skeletogenous tissue 
representing the exoderm of Calcisponges. A spicule-sheath present. 
R. aquce-ductus, Kolliker, = this species. 
Reniera, sp. (7) described without name from Black Sea. 
Metschnikowia, (7) p. 54, recharacterized. 
Metschnikowia intermedia, Grimm, (5) shows important affinities with 
Spongilla erinaceus, Ehrenberg ; the Metschnikowince, new family, are 
thus shown to be related to the Spongillas of Europe and India, p. 387. 
Isodictya mirahilis, Bowerbank, (3) p. 159, = Thalysias subtriangularis, 
Duch. & Michellotti. 
Cladorrhiza abyssicola, Sars (12) p. 371, off Novaia Zemlia. 
