1869.] on the Scientific Exploration of the Deep Sea. 



429 



There was an appreciable quantity of diffused amorphous organic matter, 

 which we were inclined to regard as connected, whether as processes, or 

 "mycelium," or germs, with the various shelled and shelless Protozoa. 



50. On careful sifting, the ooze was found to contain fresh examples of 

 each of the Invertebrate Subkingdoms. When examined at daylight on 

 the morning of the 23rd, none of these were actually living, but their soft 

 parts were perfectly fresh, and there was ample evidence of their having 

 been living when they entered the dredge. The most remarkable species 

 were : — 



Mollusca. — Dentalium, sp. n., of large size. 



Pecten fenestrates, a Mediterranean species. 

 Dacrydium vitreum, Arctic, Norwegian, and Mediter- 

 ranean. 



Scrobicularia nitida, Norwegian, British, and Medi- 

 terranean. 

 Kecera obesa, Arctic and Norwegian. 



Crustacea. — Anonyx Holbollii, Kroyer (=A. denticulatus, Bate), with 

 the secondary appendage of the upper antennae longer 

 and more slender than in shallow-water specimens. 



Ampelisca cequicortiis, Bruzelius. 



Munna, sp. n. 



One or two Axnelides and Gephyrea, which have not yet been de- 

 termined. 



Echinodermata. — Ophiocten Kroyeri, Liitken ; several well-grown 

 specimens. 



Echinocucumis typica, Sars. This seems to be a 

 very widely distributed species ; we got it in 

 almost all our deep dredgings, both in the Warm 

 and in the Cold areas. 

 A remarkable stalked Crinoid, allied to Rhizocrinus, but presenting 

 some very marked differences. 



Polyzoa. — Salicornaria, sp. n. 



Ccelenterata. — Two fragments of a Hydroid Zoophyte. 



Protozoa. — Numerous Foraminifera belonging to the groups already 

 indicated (§ 33) as specially characteristic of these abyssal waters ; together 

 with a branching flexible Tlhizopod, having a chitinous cortex studded with 

 Globigerinse, which encloses a sarcodic medulla of olive-green hue. This 

 singular organism, of which fragments had been detected in other dredg- 

 ings, here presented itself in great abundance. 



One or two small Sponges, which seem to be referable to a new group. 



51. On Friday, July 23, we tried another haul at the same depth; but 

 when the dredge came up at 1.30 p.m. it was found that the rope had 

 fouled and lapped right round the dredge-bag, and that there was nothing 



YOL. XVIII. 2 L 



