28 Spong. 
XVII. SPONGI/E. 
Sphinctrella Schmidt, diagnosed, p. 10; S. annulatei (Crtr.), diagnosed, 
p. 11; S. cribrifera Soli., diagnosed, p. 12; S. gracilis Soli., diagnosed, 
p. 12 ; S. horrida Schmidt, diagnosed, p. 11 ; S. ornata Soil., diagnosed, 
p. 12 : Topsent (62). 
Thenea Gray, diagnosed ; Topsent (62) p. 10. 
Triptolemus Soil., diagnosed, p. 11; the genus comprises three species, 
T. inteoctus (Crtr.), T. parasiticus (Crtr.), and T. cladosus Soli., p. 16 : 
Topsent (62). 
Family Stellettim:. 
Dercitancorina , n. g. of >S 'anidasterina for Pachastrella lesinensis Lend.; 
Topsent (62) p. 15. 
Pilochrota Soli., diagnosed, p. 384 ; P. fibrosa (0. S.) var. globular if or mis 
n. var. from off St. Thomas, Sail Rock, Porto Rico, p. 385 ; P. varia- 
bilis, n. sp., from off St. Thomas, Sail Rock, and off Culebra, Culebritas 
Light-House, Porto Rico, pp. 384 & 385 : Wilson (71). 
Stelletta grubei 0. S.; Kerville (26) pp. 165 & 175. S. (Astrella) horrens , 
n. sp., from off Durnford Point, Natal, 90 fathoms; Kirkpatrick (28) 
pp. 229, pi. ii, fig. 6, pi. iii, fig. 6. 
t Stolleya microtulipa Schrm. and tN. ornatissima Schrm.; Schrammen 
(55) p. 3. 
t Tethyopsis steinmanni Z.; Schrammen (55) p. 3. 
Tribrachium Weltner, diagnosed; T. schmidtii Weltner, described: 
Wilson (71) pp. 385 & 386. 
Family Geodidal 
Caminus 0. S., diagnosed ; C. sphceroconia Soli., described : Wilson (71) 
p. 386. 
t Geodia cretacea Schrm.; Schrammen (55) p. 3. 
Tribe OPHISCLEROPHORA. 
Family Raphidid.e. 
f Cephaloraphidites cavernosus Schrm. and t G. milleporatus Schrm. ; 
Schrammen (55) p. 3. 
f Ophiraphidites cylindricus Schrm., pp. 3 & 6 ; f 0. infundibulifiormis 
Schrm., p. 3 ; 1 0. tuberosus Schrm., p. 3 : Schrammen (55). 
(2) LITHISTIDA. 
Family Tetracladid,e. 
fA crochordonia dichotoma Schrm.; Schrammen (55) p. 3. 
t Astrocladia subramosa (Roem.), pp. 3 & 46 ; tff. verrucosa (Roem.), p. 5 : 
Schrammen (55): Wollemann (74) p. 58. 
t Aulaxinia sidcifera (Roem.); Schrammen (55) pp. 3, 5 & 6: Wollemann 
( 74) p. 58. 
\Aulocopdla winnipegensis Rff, described ; Whiteaves (68) pp. 145-147, 
pi. xvi, figg. 1-3, and text-fig. 9. 
t Aidocopium cylindraceum Roem. and fff. sp.; Wiman (73) p. 198. 
t Callopegma acaule Z.; Schrammen (55) pp. 3, 4 & 6. 
t Craterella tuberosa Schrm.; Schrammen (55) p. 3. 
t Discodermia antiqua Schrm.; Schrammen (55) p. 3. 
