118 
THE YOYAGE OF H.M.S. CHALLENGER. 
April 29, 1876. North, of Cape de Verde Islands. Surface. Containing Globi- 
gerina bulloides and Orbulina universa. 
May 3, 1876, corresponding to Station 353. Containing Orbulina universa and 
Hastigerina pelagica. 
II. “ Porcupine ” Expedition. 
The cruises of H.M.S. “ Porcupine,” in the summer of 1869, under the direction of 
Dr. Carpenter, Professor C. Wyville Thomson, and Dr Gwyn Jeffreys, have furnished 
material representing the sea-bottom of three distinct areas of the North Atlantic. 
Unfortunately only a small proportion of the dredgings which were obtained have been 
found available for the purposes of the present memoir, but the following have been 
worked out with moderate completeness ; — 
1st Cruise. — West and North-West of Ireland. 
Dredging was' conducted at thirty -tivo Stations, from twelve of which samples of the 
sea-bottom have been examined, and the Rhizopoda determined. They are referrible to an 
area lying between lat. 51° 42' and 56° 44' N., and between long. 10° 56' and 15° 24' 
W., as follows : — 
No. (A). “ OffValentia . 1 Lat. 51° 42' N., long. 11° 21' W. Depth, 112 fathoms.” 
Clean, fine sand. The most noticeable Foraminif era were Uvigerina pygmcea, 
Cassidulina laevigata, Bulimina marginata, Bigenerina nodosaria, and 
Operculina ammonoides. Amongst rare British species were the following : — 
Bulimina subteres, Cassidulina bradyi, Chilostomella ovoidea, Nonionina 
orbicularis, and Technitella legumen. Globigerince were present, but not in 
large number, and the pelagic species of Pulvinulina were confined to one or 
two examples of Pulvinulina micheliniana. 
No. 1. Lat 51° 51' N., long 11° 50' W. Depth, 370 fathoms; surface temperature, 
54 0, 2 Fahr. (12°'3 C.); bottom temperature, 49° Fahr. (9°’4 C.). 
Muddy sand, with a typical Ehizopod-fauna, of which the salient genera were 
Cassidulina, Uvigerina, Bulimina, Bigenerina, Truncatulina, and the 
1 This batch of material was sent to me amongst a number of “ Porcupine ” dredgings, by my friend the Rev. A. M. 
Norman, and it was worked out under the supposition that it belonged to the “ Porcupine” series. But I have learned, 
since the above was written, that it was obtained by Dr. Gwyn Jeffreys on his dredging excursion in the yacht “ Osprey,” 
in 1870. Nevertheless, as the results help materially to complete the record of the area embraced in the 1st Cruise, it 
has been retained in the list. 
