HALICHONDRIA. 99 



great a depth as I remember myself to have found it. 

 " Halichondria panicea from the Rev. A. M. Nor- 

 man, parasitical on small branching zoophytes from 

 the Durham coast in 20—35 fathoms ; remarkable for 

 being of a milk-white colour ; the organic structures 

 all as usual." 



10. Halichondria glabba, Bow., ii, 232 ; iii, 101, 353, 

 PI. XLI, figs. 1—3. 



1870 Amorphma glabra, Sclimidt. Spong. Atlaat. Geb., 

 p. 77. 



11. Haliohondeia angulata, Bow., ii, 233 ; iii, PI. 



XLI, figs. 4—8. 



1867 Orina angulata. Gray. Proc. Zool. Soc, p. 540. 



12. Haliohondeia distorta. Bow., ii, 240 ; iii, PI. XLII. 



1870 Amorphma distorta, Schmidt. Spong. Atlant. Geb., 

 p. 77. 



13. Haliohondeia edusa, Bow., hi, 201 ; PI. LXXIII, 



figs. 6 — 9. 



14. Haliohondeia ambigtja, Bow., hi, 213 ; PI. LXXIY, 



figs. 14, 15. 



15. Halichonde,ia Couchii, Bow., iii, 203 ; PI. LXXIII, 



figs. 12—15. 



