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 fictitla^ Bowerbank.* 

 Hastings. 



1 6. Microciona fa I lax, Bowerbank.* 

 Hastings. 



17. Microciona plumosa, Bowerbank.* 

 Hastings. 



1 8. Microciona atrasanquinea, Bowerbank.* 

 Hastings. 



19. Microciona spinarcha, Carter.* 

 Hastings. 



20. Hymeraphia stellifera, Bowerbank.* 

 Hastings. 



21. Raphiodesma sordida, Bowerbank.* 

 Hastings. 



22. Hymeniacidon lactea, Bowerbank.* 

 Hastings. 



23. Hymeniacidon (Suberites) denuencula, Olivi. 

 Sponge white, smooth, rounded and com- 

 pressed, very solid, no pores or oscula ap- 

 parent. Size 2 inches by 3 inches by f 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 g/abra, Bowerbank.* 

 Hastings. 



31. Hymeniacidon distorta, 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. Hymeniacidon cor ruga ta, 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 opercu/aris t 

 from the Diamond Ground off Hastings. 



39. Isodictya cinerea t Bowerbank.* 

 Hastings. 



40. Isodictya indistincta, Bowerbank.* 

 Hastings. 



41. Isodictya pal/ida, Bowerbank.* 

 Hastings. 



42. Isodictya hyndmani y Bowerbank.* 

 Hastings. 



75 



