SYSTEMATIC. 
Spong. 17 
pp. 63-68 ; E. erectum mucro7iatum, n. subsp., diagnosed and described, 
pp. 68, 69 ; E. erectum gracile, n. subsp., diagnosed and described, 
pp. 69-72: Wilson (60).—^. alicei T., redescribed, p. 45: Topsent 
(50). 
Farrea, characters of genus: Schulze (43) p. 142. — F. occa B., n. var., 
laminaris, redescribed, p. 43 ; F. weltneri T., redescribed, p. 43 : 
Topsent (50). 
F. occa claviformis^ n. subsp., diagnosed and described, pp. 57-59; 
F. mexicana, n. sp,, diagnosed and described, pp. 60-62; F. sp., 
described, p. 62 : Wilson (60). 
Ramella, n. g., characters of, p. 144 ; R. tubulosa F. E. S., n. sp., described, 
pp. 38, 39 : Schulze (43). 
Sarostegia oculata, n. g., n. sp., described: Topsent (51). — S. oculata 
T., redescribed : Topsent (54). 
iStrephinia convoluta^ S. retiformis : Jukes-Bkowne & Hill (26) p. 508. 
t Verrucocoelia tuhulata, V. vectensis, V. sp. : Jukes-Browne & Hill (26) 
p. 509. 
Family Mellittionid^ (Aphrocallistid^). 
AphrocalUstidce, characters of family: Schulze (43) pp. 178, 179. 
Aphrocallistes, characters of genus, p. 148 ; A. heatrix J. E.G., redescribed, 
pp. 39-47: Schulze (43). — A. azoricus T., redescribed: Topsent (50) 
pp. 48-50.— J^. vastus F. E. S. (sp. ?), redescribed : Wilson (60) p. 73. — 
A. sp. : Jukes-Browne & Hill (26) p. 505. 
■\8tauronema carteri^ S. lohatum, S. planum : Jukes-Browne & Hill (26) 
p. 508. 
Family M^ANDROSPONGIDiE. 
iCallodictyon angustatum : Jukes-Browne & Hill (26) p. 505. 
'\Camerospongia: Holmes (20). — C. aperta, C. campa7iulata, C. capitata, 
G. subro'tunda : Jukes-Browne & Hill (26) p. 505. 
■\Diplodictyon hayfieldi : Jukes-Browne & Hill (26) p. 506. 
^Etheridgea sp. : Jukes-Browne & Hill (26) p. 506. 
i Plocoscyphia convoluta, P. sp. : Hinde (19). — P. : Holmes (20). — P. 
pertusa: Jahn (25). — P. convoluta, P. elegans, P. fenestrata, P. 
flexuosa, P. foliacea, P. labrosa, P. meandrina, P. labyrinthica, 
P. reticulata, P. subruta, P. vagans : Jukes-Browne & Hill (26) 
pp. 507, 508. — P. convoluta: Rowe (41). 
iPorochonia simplex: Jukes-Browne & Hill (26) p. 508. — P. simplex: 
Rowe (41). 
■\Toulminia obliqua: Jukes-Browne & Hill (26) p. 509. 
f Tremabolites perforatus: Jukes-Browne & Hill (26) p. 509. 
Family Staurodermid^. 
\Cincliderma quadrat am : Jukes-Browne & Hill (26) p. 505. 
■\Ophrystoma micrommatum : Jukes-Browne & Hill (26) p. 507. 
iPlacotrema cretaceum: Holmes (20). — P. cretaceum : Jukes-Browne & 
Hill (26) p. 507. 
iPorostomia {Porospongia) sp. : Baumberger (1) p. 21. 
•\ Purisiphonia clarkei : Etheridge (11). 
Family Cceloptychid^. 
\Cceloptychium agaricoides, C. deciminium, C. sp. : Jukes-Browne & Hill 
(26) p. 506. — C. agaricoides : Rowe (41). 
