MARINE ZOOLOGY tufts about 2 inches in height, closely resem- bling the illustration of the Northumberland specimen figured by Bowerbank, but of twice the height. The writer learns that similar forms to the present in the British Museum are labelled by Bowerbank D. ramosus, Bk., but that Carter labels similar specimens Ras- pailia aculeata (? Bk. sp.). The present speci- mens were cast up on the beach after a storm, and similar forms have not been since noticed. Hastings. 15. Microciona fictitia, Bowerbank.* Hastings. 16. Microciona fallax, Bowerbank.* Hastings. 17. Microciona plumosa, Bowerbank.* Hastings. 18. Microciona atrasanquinea, Bowerbank.* Hastings. 19. Microciona ipinarcha. Carter.* Hastings. 20. Hymeraphia stellifera, Bowerbank.* Hastings. 21. Raphiodesma sordida, Bowerbank.* Hastings. 22. Hymeniacidon lactea, Bowerbank.* Hastings. 23. Hymeniacidon {Suberitei) denuencula, Olivi. Sponge white, smooth, rounded and com- pressed, very solid, no pores or oscula ap- parent. Size 2 inches by 3 inches by | inch in thickness. The specimen has been appa- rently attached to a rock. From moderately shallow water. Rare. Hastings. 24. Hymeniacidon caruncula, Bowerbank.* Hastings. 25. Hymeniacidon mammeata, Bowerbank.* Hastings. 26. Hymeniacidon crustula, Bowerbank. Sponge somewhat cylindrical with rounded ends, smooth, orange coloured. Length, 4 inches by i^ inches in diameter. The speci- men envelops the stems of a coralline. From moderately shallow water; rather rare. Hast- ings. 27. Hymeniacidon suberea, Bowerbank.* Hastings. 28. Hymeniacidon {Clione) celata^ Bowerbank.* The species is dark brown in colour, and is found boring into shells and rock. It fre- quently bores through the valves of the scal- lop, obliging the animal to barricade itself within by fresh excretions of shelly matter. From the Diamond Ground ; common. Hastings. 29. Hymeniacidon pannicea, Johnston. Sponge green, drying almost white. It incrusts the rocks at low water in consider- able masses, often forming ridges of volcano- like vents. Finer specimens are obtained from deeper water, often upon tubularian stems and other hydroids. The deep water specimens are not so characterized by the ridges of vents, but are smoother. Very common. Hastings. 30. Hymeniacidon glabra, Bowerbank.* Hastings. 31. Hymeniacidon diitorta, Bowerbank. Sponge rather low and branching ; colour, grey-brown. Before branching the shoots are palmate, giving off others in a plane at a right angle. Texture of sponge somewhat velvet-like. Scattered here and there over the surface are stellate oscula. From moder- ately shallow water; rather rare. Hastings. 32. Hymieniacidon corrugata, Bowerbank.* Hastings. 33. Hymeniacidon incrustans, Johnston.* Hastings. 34. Hymeniacidon irregularis, Bowerbank.* Hastings. 35. Hymeniacidon nigricans, Bowerbank.* Hastings. 36. Hymeniacidon pattersoni, Bowerbank.* Hastings. 37. Hymeniacidon ingalli, Bowerbank.* Hastings. 38. Hymeniacidon farinaria, Bowerbank. Forming a pale bufF-coloured coating of fine texture upon shell of Pecten opercularis, from the Diamond Ground off Hastings. 39. Isodictya cinerea, Bowerbank.* Hastings. 40. liodictya indistincta, Bowerbank.* Hastings. 41. Isodictya pallida, Bowerbank.* Hastings. 42. Isodictya hyndmani, Bowerbank.* Hastings. 75
