96 BBITISH SPONGIAD^. 



4. Halichondeia inconspioua, Bow., ii, 236 ; iii, PI. 

 XLI, figs. 12—14. 



1870 Amorphina inconspieuM, Scliinidt. Spong. Atlant. Geb., 

 p. 77. 



5. Halichondeia inoerta, Bow., ii, 237 ; iii, PI. XLI, 



figs. 15—17. 



6. Halichondeia coalita {Grant), ii, 288 ; iii, PI. XLI, 



figs. 18—20. 



1870 Amorphina coalita, Schmidt. Spong. Atlant. Geb., p. 77. 



Habitat. — ^A specimen in my cabinet was given me by 

 Dr. Jeffreys, who dredged it in the Roach River (N). 



7. Halichondeia mutulus. Bow., hi, 209, PI. LXXIV, 



figs. 4 — 8. 



1868 nalichondria mutulug, Bowerbank. Last Report, 

 Dredging Shetland Isles ; Norman on Poiifera, Brit. 

 Assoc. Bep., p. 332. 



8. Halichondeia ctlindeacea, Boid., n. sp. PI. VI, 

 figs. 4 — 8. 



" Sponge massive, sessile, or coating thickly. Sur- 

 face smooth, uneven. Oscula simple, minute. Pores 

 inconspicuous. Dermal membrane pellucid, abun- 

 dantly spiculous ; spicula subcylindrical acerate, 

 equable in length, but variable in diameter, dispersed ; 

 retentive spicula bidentate,equi-anchorate, rather laro-e, 

 few in number ; and rarely bihamate, small and very 



