1867.] DR. J. E. GRAY ON SPONGES. 533 



Esperia foraminosa, O. Schmidt, p. 54, t. 5. f. 3. B.M. 



? E. bauriana, O. Schmidt, p. 55. B.M. 



E. tunicata, O. Schmidt, p. 55, t. 5. f. 4. B.M. 

 E. bowerbankii, O. Schmidt, p. 55. 

 E. anceps, O. Schmidt, t. 5. f. 5. 



E. syrinx, O. Schmidt, p. 56, t. 5. f. 6. B.M. 



E. lorensi, O. Schmidt, p. 56, t. 5. f. 7. B.M. 



E. massa, O. Schmidt, p. 56, t. 5. f. 8. B.M. 

 E. modesta, O. Schmidt, p. 57, t. 5. f. 9 (called Clathria coral- 



loicles in explanation of plates). B.M. 

 E. volutata, 0. Schmidt, p. 57. 



E. tiodosa, O. Schmidt, Supp. i. p. 33, t. 3. f. 10. B.M. 



E. basillaris, O. Schmidt, Suppl. i. p. 34. t. 3. f. 12. B.M. 



2. Mycale. 



Sponge massive, sessile. Oscules dispersed. Skin spiculose. 

 Spicules of three kinds : — 1 . Inequianchorate, of two sizes ; larger in 

 radiating groups, flukes cordate, with a central ridge, sides of flukes 

 dilated, curled up on the sides and produced below ; smaller dis- 

 persed. 2. Fusiform, needle-like. 3. Bihamate, simple and con- 

 torted, minute. 



Mycale lingua. B.M. 



Hymeniacidon liayula, Bowerb. B. S. ii. p. 187, f. 147, 148, 297. 



See also — 



Mycale grandis, O. Schmidt, Supp. t. 3. f. 11. 



Hab. India. Flukes triangular, hastate. 



3. iEcOGROPILA. 



Sponge massive or coating, rugose. Oscules large, dispersed. 

 Skin spiculose. Skeleton reticulated ; fibres formed of bungled 

 spicules. Spicules of fovir kinds: — 1. Fusiform, needle-like, or 

 subclavate. 2. Contorted and reversed, bihamate. 3. Inequian- 

 chorate, bidentate. 4. Fusiform, tricurvate. 



iEGOGROPILA VAKIANS. 



HalicJiondria cegogropila, Johnston. 



Desmacidon cegogropila, Bowerb. B. S. ii. p. 352, f. 264. 



4. Menyllus. 



Sponge sessile, closely laticed by round inosculating branches, mi- 

 nutely hispid. Skin with slender fusiform spicules, fasciculated and 

 forming a coarse irregular network. Spicules of three kinds : — 

 1. Slender, needle-like or fusiform, partially spined. 2. Inequian- 

 chorate, angulated. 3. Bihamate, malformed. 



Menyllus ingalli. 



HalicJiondria ingalli, Bowerb. B. S. ii. p. 258, f. 29, 30. 



