186/.] DR. J. E. GRAY ON SPONGES. 541 



I. Sponge suhylohose, with tricurvate internal spicules supporting 

 the outer surface. 



* Sponge with stellate spicules on the skin or sarcode. 



1. DoNATiA (part.), Nardo, Isis, 1833, p. 522. 



Sponge fleshy, subglobose, warty. Spicules of three kinds : — 

 1. Stellate. 2. Subulate or fusiform, simple. 3. Club-shaped; club 

 conical, truncated, with a conical process on one of the sides. 



Tethya, Schmidt, Suppl. p. 43. 



DoNATiA AURANTiUM, Nardo, Isis, 1833, p. 522. B.M. 



Alcyonium aurantium, Pallas ; Esper, t. 19. f. 4-8. 



A. lyncurium, Gmelin, S. N. p. 1295. 



Spongia verrucosa, Mont. W. Tr. ii. p. 117, t. 13. f. 45. 



Tethea lyncurium, Lamk. A. s. V. ii. p. 592; Blainv. M. A. 

 p. 544, t. 91. f. 3? ; Johnst. B. Sp. p. 85, f. 13 ; Bowerb. B. S. ii. 

 p. 92, f. 342; O. Schmidt, S. A. p.44,t.4.f. 1-9; Suppl. ii. 1. 1. f. 15. 



Tethya verrucosa. Gray, B. P. i. p. 3f>2. 



T. sphcerica, Fleming, B. A. p. 520. 



Hah. Coast of England. 



See also — 



Tetheya lacunosa, Lamk., Schw. Beob. t. 2. f. 17, 18. 

 Tetheum pulvinntum, Blainv. Man. d'Actinol. p. 544. 

 Tethia cavernosa, Lamk. Ann. du Mus. i. p. 71. 

 Tethya aspestella, Lamk. Ann. du Mus, i. p. 71. 

 Tethya hispida, Bowerb. Canadian Naturalist, p. 304. 

 Tethia globosa, Duchass. & Michelot. Sp. CarrJbe, p. 104. Gua- 

 deloupe. 



2. COLLINGSIA. 



Sponge massive, depressed, uneven, rugged. Spicules : — 1. Fusi- 

 form. 2. Stellate (attenuato- and cylindrico-stellate). 3. Fusiform, 

 ternate, recurved at the tips. 



1. COLLINGSIA SARNIENSIS. 



Tethea collingsii, Bowerb. B. S. p. 87, f. 48. 



2. COLLINGSIA SCHMIDTII. 



Tethea schmidtii, Bowerb. ib. p. 89. 



3. Thenea, 



Sponge massive. Spicules: — 1, Simple, not protruded beyond 

 the surface. 2. Large, furcate, ternate, with expanded long acute 

 rays. 3. Elongate, stellate, projecting beyond the outer surface. 



Thenea muricata. 



Tethea muricata, Bowerb. ib. i. pp. 25, 108, f. 35, 304, 305. 

 Ilnb. Norwav, Vigten Island. 



