16 Spong. 
XVII. SPONGIiE. 
[1904] 
redescribed, pp. 207-218 : Ijima (24).— /S., sp., described, Wilson 
(60) pp. 54-56. 
Vitrollula Ij., characters of the genus, p. 37 ; V. fertilis Ij., redescribed, 
pp. 38-55 : Ijima (24). 
(ii) DICTYONINA. 
Family CosciNOPORiDiE. 
Coscinoporidoe, characters of family: Schulze (43) p. 178. 
Bathi/xiphus, sp., described : Wilson (60) pp. 75-77. 
Chonelasma schulzei^ T. redescribed, pp. 51-53; C. ijimai T., redescribed, 
pp. 53-55: ToPSENT (50). — C. calyx F. E. S. (sp.?), redescribed: 
Wilson (60) pp. 74, 75. 
iCoscinopora infundibuliformis^ C. quiiicuncialis, C. sp. : Jukes-Browne 
& Hill (26) p. 506. — C. infundibuUformis: E-owe (41). 
\Guettardia stellata: Rowe (41). — G. angularis, G. stellata: Jukes- 
Browne & Hill (26) p. 506. 
^Leptophragma murchisoni : RowE (41). — L. fragilis, L. murchisoni: 
Jukes-Browne & Hill (26) p. 506. 
iPleurostoma radiatum: Jukes-Browne & Hill (26) p. 507. — P. hohe- 
micum^ P. scyphus: Jahn (25). 
Family Tretocalycid.e (formerly TRETODiCTYiDiE, Schulze). 
Tretocalycidce (formerly TretodictyidcB F. E. S.), characters of family with 
list of genera: Schulze (43) pp. 179, 180. 
Hexactinella lahyrinthica, n. sp., diagnosed and described, pp. 77-82; 
B. ventilahi'um Carter (sp. 1\ described, pp. 82, 83 ; H. tuhulosa 
F. E. S. (sp. ?), described, pp. 83, 84: Wilson (60). — H. filholi, n. sp., 
described : Topsent (53). — H. grimaldii T., redescribed : Topsent 
(53a). 
Sclerothamyiopsis compressa, n. g. et sp., diagnosed and described : 
Wilson (60) pp. 84-87. 
Family Aulocystid^. 
Characters of family : Schulze (43) p. 180. 
Family Dactylocalycid^. 
Characters of family, with list of genera: Schulze (43) p. 180. 
Auloplax, characters of genus, pp. 148, 149; A. auricularis F. E. S., 
redescribed, pp. 47-50 : Schulze (43). 
Family Euretid^ (includes Farreid^). 
Characters of family with list of genera: Schulze (43) pp. 177, 178. 
fAmmonella quadrata, n. g., n. sp., described : Walther (57) pp. 162, 163. 
iCraticidaria vulgata^ C. subserviata : Jahn (25). — C.Jittoni, C. subseriata, 
C. sp. : Jukes-Browne & Hill (26) p. 506. 
fOnbrospojigia sub reticulata: Jahn (25). 
Eurete, characters of genus, p. 143 ; E. sp., described, pp. 37, 38 : Schulze 
(43). — E. erectum tubidiferum, n. subsp., diagnosed and described. 
