SYSTEMATIC. 
Spong. 35 
Svartzevsky (60) pp. 344 & 345, 348, pi. v, figg. 16-19. E. oleho- 
nensis n. sp. from Lake Baikal; Svartzevsky (59) pp. xii & xiii, 
figg. 3-6 and (60) pp. 342-344, 348, pi. iv, figg. 12-15. 
Lubomirskia bacillifera Dyb., and varr. a and y Dyb., pp. x & xi; L. baica- 
lensis (Pall.), p. x, figg. 1 & 2 ; L. fusifera Sue., p. xi; L. intermedia 
Dyb. and varr. a Dyb. and /3 Sue., p. xi (vide etiam Veluspa) : 
Svartzevsky (59). L. [errore Lubomliskia] irregularis n. sp., Lake 
Baikal, pp. 341 & 342, 347, pi. iv, fig. 11 ; L. papyracea Dyb., var. a 
n. var., from Lake Baikal, pp. 339-341, 347, pi. iii, figg. 7-10: 
Svartzevsky (60). L. tschersJcii Sue., vide Veluspa bacillifera , var. 6. 
Potamolepis weltneri n. sp. from deep water of Lake Tanganyika and the 
lower reaches of the Congo, with spicules “ closely similar to those of 
the old fossil genus Renieria ” [sic]; Moore (43) p. 323, fig. 4, pp. 331 
& 342, 353 & 354. 
Spongilla seu Euspongilla ; S'. aspinosa Potts ; Land acre (31) p. 96 : 
compared with 8. moorei Evans ; Moore (43) pp. 316 & 317. 8. 
cinerea Crtr.; Landacre (31) p. 96. 8. contecta , figure of gemmule ; 
Goette (16) p. 98, fig. 80. 8. fragilis Leidy ; Landacre (31) p. 96. 
E. lacustris ; Blasius (6): Levander (36) pp. 6, 17. S. microgem- 
mata n. sp.. Lake Baikal; Svartzevsky (60) pp. 346-348, pi. v. 
figg. 20-22. 8. moorei Evans, description and affinities [quoted from 
Evans] pp. 310-317, figg. 1 & 2; S', tang any ikee Evans, description and 
affinities [quoted from Evans], pp. 318-322, fig. 3 ; Moore (43). 
Veluspa abietina n. sp. from Lake Baikal, pp. 338 & 339, 347, pi. iii, 
figg. 4-6 ; V. bacillifera (Dyb.), and four varr., p. 347, pi. iii, fig. 1 
(vide etiam Lubomirskia)-, V. bacillifera var. 6, n. var., for Lubomir¬ 
skia tscherskii Sue., p. 347 ; V baicalensis (Dyb.) and five varr., p. 347 
(vide etiam Lubomirskia)-, V. fusifera (Sue.), var. a n. var., from 
Lake Baikal, pp. 337 & 338, 347, pi. iii, figg. 2 & 3 (vide etiam 
Lubomirskia ); V. intermedia (Dyb.) and var. a, p. 347 (vide etiam 
Lubomirskia) : Svartzevsky (60). 
Sub-family Gelliodin^e. 
Cladocroce Tops., the genus perhaps to be united with Reniera; Lund- 
beck (38) pp. 52 & 53. 
Gelliodes Ridley, diagnosis of the genus, p. 75 ; G. cavicornis Tops., vide 
Oceanapia robusta; G. consimilis n. sp. from 69° 31' Lat. N., 7° 06 
Long. W., 1309 fathoms, temperature 1° below zero, pp. 77 & 78, 
pi. xiv, fig. 6, a-e ; G. plexa n. sp., from N.W. of Faroe Islands and 
N. E. Greenland, 100-272 fathoms, pp. 75-77, pi. v, figg. 3 & 4, pi. xiv, 
figg. 3, a-d , 4 & 5 : Lundbeck (38). 
Sub-family Phlceodictyin^e. 
Subfamily Phloeodictyince to be broken up, and its two genera classed 
one with Homorrhaphidce, the other with Eeterorr/iaphidce; Lundbeck 
(38) pp. 4, 56 & 57. 
Oceanapia Norman, diagnosis and characters of the genus, regarded as 
closely allied to Gelliodes-, Lundbeck (38) p. 78 and p. 57: diagnosed; 
Wilson (71) p. 395. 0. oleracea O. S., described ; Wilson (71) p. 396. 
O. robusta (Bwk.), redescribed and defined, includes Gelliodes cavi¬ 
cornis Tops. ; Lundbeck (38) pp. 78-82, pi. xv, figg. 1, a-c, 2-4. 
Phloeodictyon Carter (= Rhizochalina olim), genus diagnosed and reestab¬ 
lished, and referred to the Renierince , pp. 56 & 57 ; P. elongatum , 
for Rhizochalina elongata Tops., redescribed and defined, pp. 59-61, 
pi. vi, figg. 3 & 4, pi. xii, figg. 8, a, b & c, & 9 ; P. irregulare n. sp., 
from 65° 28' Lat. N., 27° 39' Long. W., 450 fathoms, pp. 61 & 62, pi. vi, 
