18 Spong. xvn. spongle. [1905] 
D. simplex , n. sp., Cape Town ; Baer (1) pp. 21, 22, pi. ii, fig. 7, pi. v, 
fig. 20-25. 
Desmacella O. S., defined, p. 155 ; D. tubulata , n. sp., Gulf of Manaar, 
pp. 155, 156, pi. ix, fig. 4 : Dendy (8). 
Desmacellince , defined : Dendy (8) p. 155. 
Desmacidon arctica Hansen, D. clavatum Hansen and D. nucleus Hans., 
synonyms of Ghondrocladia gigantea , q.v. : Lundbeck (17) pp. 106, 
107. — D. ceratosa (R. & D.), described: Thiele (36) pp. 435, 436, 
fig. 56, a, b. — D. clavellata Arnesen, a synonym of Homceoaictya flabelli- 
formis (Hans.), q.v.: Lundbeck (17) p. 120.— D. delicata, n, sp., 
Admiralty Sound, 19 m., p. 435, figg. 1, 55, a, 5 ; D. platei, n. sp., 
Juan Fernandez, pp. 436-438, fig. 57, a-c : Thiele (36). 
besmacidonidce , defined, with subfamilies Esperellmce , Phloeodictyince , and 
Ectyoninae : Dendy (8) p. 158. — D ., divided into Mycalince and 
Eciyonince ; the Mycalince divided into two groups, Mycalece ( = Es- 
perellince) and Myxillece ( = Dendorycince ) : Lundbeck (17). 
Echinodictyum Ridley, defined, p. 175; E. clathratiim , n. sp., Ceylon Seas, 
pp. 175, 176, pi. xi, fig. 4 Dendy (8). 
Ectyonince , defined : Dendy (8) p. 168. 
Ephydatia miilleri , see ill, a, 0. 
Esperella Vosmaer (seu Esperia O. S.), defined: Dendy (8) p. 159; 
Dragnewitsch (9) p. 14 : A’., to be replaced by Mycale Gray : 
Lundbeck (17) p. 7 ; E. } defiued : Svarchevskii (35; p. 24. — E. 
bellabellensis , n. sp., coast of British Columbia, 300 fathoms : 
Lambe (16). — E. bihamatifera Hansen, a synonym of Asbestopluma 
pennatula (0. S.), A. lycopodium Levins., and A. infundibulum 
Levins., qq.v. : Lundbeck (17) pp. 50 and 65. — E. crassissima . , n. sp., 
Ceylon Seas : Dendy (8) pp. 160, 161, pi. xi, fig. 6. — E. foraminosa 
O. S. : Svarchevskii (35) p. 28. — E. fristedtii Lambe, two of the 
three specimens are Asbestopluma cupressiformis Cart., q.v., the 
third is A. lycopodium Levins., q.v.: Lundbeck (17) p. 62. — E. 
intermedia Vanhoffen (non Schmidt) to be Mycale thaumatochela , 
q.v.: Lundbeck (17) p. 40. — E. iophon , n. sp., Black Sea: 
Svarchevskii (35) pp. 27, 28 and 51, pi. ii, fig. 6, pi. iv, fig. 7, pi. v, 
fig. 6. — E. lanugo 0. S., a synonym of Mycale ovulum (0. S.), q.v.; 
Lundbeck (17) p. 37. — E. lorenzii 0. S., described, pp. 25-27, pi. iv, 
fig. 8, pi. v, fig. 3 ; E. modesta 0. S., p. 28 : Svarchevskii (35). — 
E. murrayi R. & D., described : Dragnewitsch (9) pp. 14, 15.— 
E. muscoidea Tschorn,, described : SvarchevskiI (35) pp. 24, 25, 
pi. v, fig. 4. — E. nigricans Frist., a synonym of Iophon piceus (Vosm.), 
q.v. : Lundbeck (17) p. 179. — E. parishii Ridley, described : Dendy 
( 8) p. 159. — E. pattersoni Frist, nec Bow., a synonym of Iophon 
dubius (Hans.), p. 183 ; E. picea Levinsen non Vosmaer, a synonym 
of Iophon fngidus , n. sp., p. 183 : Lundbeck (17). — E. plumosa 
Carter, described : Dendy (8) pp. 159, 160. — E. plumosa Arnesen, a 
synonym of Asbestopluma pennatula (0. S.), q.v. : Lundbeck (17) 
p. 50.— E. serratohamata Carter, to be type of Paresperella, q.v. : 
Dendy (8) p. 162. — E. stolonifera Merejk., a synonym of Mycale 
ovulum (0. S.), q.v. ; Lundbeck (17) p. 37. — E. tenuispiculata , n. sp., 
Ceylon Seas ; Dendy (8) pp. 161, 162. — E. vosmaeri Levinsen, a 
synonym of Mycale lingua (Bow.), q.v. : Lundbeck (17) p. 34. 
Esperellince , defined : Dendy (8) p. 159. 
Esperiopsti Carter, diagnosis, characteristics, and list of species : Lund- 
beck (17) pp. 7-9 ; E. t discussed : Thiele (36) p. 440. — E. edwardii 
(Bow.), described : Thiele (36) pp. 441, 442. — E. flagellum , n. sp., 
Ingolf, 316 fathoms, pp. 20-22, pi. ix, fig. 1, a-h ; E. forcipula, n. sp., 
Davis Strait, 80-100 fathoms, pp. 17-20, pi. i, fig. 5, pi. viii, fig. 5, a-i; 
E . modesta Lambe, a synonym of Mycale ovulum (0. S.), q.v., p. 38 ; 
