,3 PORIFERA. III. 



Spicules : 

 skeletal. dermal. tnicrosclera. shape. 



1876. G.pyrula Cart. (Ann. Mag. Nat. Hist. 

 4, XVIII, 388, PL XIV, fig. 20, PL XV, 

 fig. 38) (Cometella) tornota styli chelae arcuatae club-shaped. 



1882. — armigera Bow. 1 ) (Mon. Brit. Spong. 

 IY, 73, PL IV, figs. 10— 17) Hymenia- 

 cidon) oxea styli chelae arcnatae crnst. 



1885. — dura Arm. Hans. (Norw. North. Atl. 



Exp. XIII, 13, PL II, fig. 5) (Sclerilla) oxea oxea chelae arcnatae clnb-shaped. 



- arctica Arm. Hans. (ibid. 12, PL II, 



fig. 4, PL VI, fig. 15 (Sclerilla) . . . oxea oxea chelae arcnatae clnb-shaped. 



« — membranacea Arm. Hans. 2 (ibid. 4, 



PL I, fig. 11, PL VI, fig. 12.) (Reniera) ? oxea ? ? 



1892. — pedunculated Tops. (Resultats des 

 camp. sc. du Prince de Monaco, II, 105, 

 PL V, fig. 6, PL X, fig. 17.) (Yvesia). . tornota styli chelae arcnatae club-shaped. 



« — fallax Tops.{ibid., 106, PL VI, fig. 13, 



PL X, fig. 14.) .(Yvesia) tornota styli chela; arcuatae massive. 



« — Hanseni Tops, (ibid., 106, PL VI, 



fig. 9 a, PL X, fig. 13) (Yvesia) tylota styli chelae arcnatae, crust. 



sigmata 



- Ricliardi Tops, (ibid., 107, PL X, 



fig. 15.) (Yvesia) tylota styli chelae arcuatae, crust. 



sigmata 

 « — Guen/ei Tops, (ibid., 105, PL III, 



fig. 7, PL X, fig. 16) ( Yvesia) styli styli sigmata thick crust. 



« — Ridley <i 'Tops, (ibid., 107, PL X, fig. 



12) (Yvesia) tylota with spi- tornostrongyla -f- crust. 



unions ends 



« — pertusa Tops, (ibid., 107, PL IV, fig. 

 10, PL X, fig. 18.) (Yvesia) (non per- 

 tusa Tops. 1904) tornota oxea chelae arcuatae crust. 



« — lingirifcra Tops, (ibid., 108, PL X, 



figs. 10— n) ( Yvesia) strougyla oxea chelae arcuatae massivecrust. 



« — rosacea Tops. (Arch. Zool. exp. et 



gen. 2, X, XXIII) (Yvesia) tornota styli chelae arcuatae thick crust. 



1898. — alecto Tops. (Mem. de la Soc.Zool. 



de Fr. XI 248, fig. 2 e— e") (I T vesia) . strougyla oxea, with large -7- massive. 



spinulous spines 

 and transform- 

 ations to asters 

 1903. — polymastiaThiele: (Arch, fur Natur- 

 gesch. 1903, 391, Taf. XXI, Fig. 

 24 a— c) strougyla styli chelae arcuatae semiglobular. 



« — tnammillata Arneseu (Berg. Mus. 

 Aarb. 1903, 17, Taf. II, Fig. 6, Taf. VII, 



Fig. 2.) ( Yvesia) tylota, styli to chelae arcuatae massive. 



single styli strongyla 



') Perhaps a Crdla. 2) This species might perhaps be a Crella, but the point cannot be decided, only the dermal mem- 

 brane being known. 



