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MARINE BIOLOGY OF THE SUDANESE RED SEA. 
Sub-Fam. EspERELLIN# (co7.). 
Esperella suezza, 0. sp. 
Esperella erythreana, 0. sp. 
Sub-Fam. Ectyoninai. 
Myzilla isodictyalis (Carter). 
Myzilla cratera, u. sp. 
Myzxilla tenuissima, u. sp. 
Ophlitaspongia (?) arbuscula, n. sp. 
Ophlitaspongia (?) horrida, n. sp. 
Ophlitaspongia (?) diyitiformis, n. sp. 
Sub-Fam. TEDANIINZ, 
Tedania assabensis, Keller. 
Fam, AXINELLID/K. 
Hymeniacidon culcifera, n. sp. 
Hymeniacidon zoster@, i. sp. 
Acanthella aurantiaca, Keller. 
Phakellia donnani (Bowerbank). 
Phakellia palmata, i. sp. 
Ciocalypta tyleri (Bowerbank). 
Order EUCERATOSA. 
Fam, APLYSILLID. 
Megalopastas erectus, 0. Sj. 
Darwinella aurea (?), Muller. 
Fam, SPONGELIIDA. 
Spongelia edificanda, nu. sp. 
Spongelia delicatula, n. sp. 
Psammopemma commune (Carter). 
Dysidea cinerea, Keller. 
Euryspongia lactea, n. g. et sp. 
Fam, SPONGIIDA. 
Heteronema erecta, Keller. 
Duriella nigra, n. g. et sp. 
Hircinia variabilis var. typica, O. Schmidt. 
Hireinia variabilis var. hirsuta, O. Schmidt. 
Hircinia fasciculata (Esper). 
Hircinia ramosa, Keller. 
Hircinia rugosa, Lendenfeld. 
Aplysina reticulata, Lendenfeld. 
Aplysina inflata, Carter. 
(?) Aplysina purpurea, Carter. 
Aplysina mollis, 0. sp. 
Aplysina pretensa, D. sp. 
Cacospongia cavernosa (Esper). 
Phyllospongia radiata (Hyatt). 
Phyllospongia madagascariensis (Hyatt). 
Phyllospongia cordifolia (Keller). 
Euspongia zimocca (O. Schmidt). 
Euspongia officinalis var. arabica, Keller. 
Euspongia officinalis var. ceylonensis, Dendy. 
