12 Spong. 
XVII. SPONGIJE. 
[1904] 
B. from: Etheridge (11). — Oolitic and cretaceous rocks south of Scar- 
borough, sponges from : Fox-Strangways (12) p. 40 et seq. — EngUsh 
Chalk, zonal distribution of species of Porosphcera in: Hinde (18) pp. 6- 
10. — Cephalites longitudinalis^ Pharetrospongia strahani, Plinthosella 
squamosa^ Plocoscyphia convoluta^ P. sp., Poi'osphoera globularis, P. nuci- 
formis^ P. patelliformis from the Surrey Chalk : Hinde (19). — English 
Chalk, Placotrema cretaceum^ Ventriculites decurrens^ V. impressus, V. 
alcyonoides^ V. radiatus, Plocoscyphia, Camerospongia, Porosphcera pileolus^ 
P. sp. from the : Holmes (20). — Kreideformation, fossil sponges from the : 
Jahn (25). — Upper, Lower and Middle English Chalk, list of fossil sjDonges 
from: Jukes-Browne & Hill (26). — Chalk of Yorkshire Coast, Ventri- 
culites radiatus, V. crihrosus, V. impressus, V. infundihuliformis, V. convo- 
lutus, V. decurrens, Plocoscyphia convohita, Porochonia simplex, Coscinopora 
infiLndilmliformis, Giiettardia stellata, Leptophragma murchisoni, Coelopty- 
chium agaricoides, Callopegma ohconicum, Heterostinia ohliqua, Siphonia 
konigi, Stelletta inclusa, Cliona cretacea, Porosphcera globularis, P. glohidaris 
var. nuciformis, P. pileolus, P. pileolus var. patelliformis, P. pileolus var. ar- 
recta, from : RowE (41) pp. 292, 293. — Flint, Denmark, fossil sponges from: 
UssiNG (55). — Solnhofener Plattenkalke, Ammonella quadrata, n. g., n. sp., 
Phyllospongia lumbricaria, P. acuminata, P. elongata, P. rubarticulata, P. 
latifrons, P. varius, from the : Walther (57) pp. 162, 163. 
(iv) Palaeozoic. 
Silurian of Rio Trombetas, Para, Brazil, sponges from : Clarke (3). 
IV. SYSTEMATIC. 
[A name of a species, followed only by a reference to a name from the list 
of titles, is a record of occurrence pure and simple. The approximate 
locality (or horizon) can be ascertained by looking up the author's 
name attached to the particular species in the above (section iii).] 
A. PORIFERA, GENERAL. 
B. CALCAREA. 
(i) HOMOCCELA. 
Family CLATHRINiDiE. 
Clathrina coriacea, C. lacunosa : Mar. Biol. Ass. (34). 
Family Leucosoleniid^. 
Leucosolenia botryoides, L. complicata, L. variabilis: Mar. Biol. Ass. 
(34). — L. complicata, L. variabilis, L. botryoides redefined and re- 
described in full: MiNCHiN (36) pp. 360-394. 
(ii) HETEROCCELA. 
Family SYCETTiDiE. 
Sycon seu Sycandra raphanus, spermatogenesis in : Gorich (14). — S. com- 
pressum, S. coronatum\ Mar. Biol. Ass. (34). — S. setosa grown in 
water deprived of calcium salts : Maas (31, 32). — S. setosum, S. 
coronata : Sowinsky (46) p. 289. 
iTremacystia cCorbignyi, T. siphonoides : Jukes-Browne & Hill (26) 
p. 505. 
