98 
THE VOYAGE OF H.M.S. CHALLENGER. 
Ammodiscus, Hormosina, Webbina, and Hyperammina are all represented. 
Perhaps the only species present that would suggest a southern habitat is 
Clavulina communis. 
Station 218 A. — March 7, 1875. Nares Harbour, Admiralty Islands. Depth, 16 
to 25 fathoms. 
Coral-sand and nullipore. In addition to the tropical shallow-water types, 
such as Alveolina, Amphistegina, Calcarina, Opercidina, and Heterostegina, 
the material from this dredging abounds in rare varieties of the Milioline 
genera ; but perhaps the most interesting of all the organisms it contains are 
certain adherent Foraminifera which make their home on the fragments of 
coral and nullipore, of which it is largely composed. These species are 
Carpenteria utricularis, Sagenella frondescens, and Bdelloidina aggregata , — 
of which the figured specimens are all from this locality, — Planorbulina 
larvata, Polytrema miniaceum, and Polytrema album. 
Station 219 A. — March 10, 1875. Nares Harbour, Admiralty Islands. Depth, 17 
fathoms ; anchor mud. 
Somewhat muddy coral-sand, with Orbitolites and the other ordinary shallow- 
water tropical types. This, like the dredging last described, is exceedingly 
rich in the less common Milioline forms, and also in the genera Textularia, 
Bolivina , Spirillina, and Truncatulina. The following are some of the more 
interesting species from the list : — Textularia concava, Textularia siphonifera , 
Textularia folium, and Textularia inconspicua ; Bolivina tortuosa, Bolivina 
limbata, and Bolivina schwageriana ; Cassidulina ( Orthoplecta ) clavata, 
Spirillina obconica, Spirillina incequalis, and Spirillina limbata ; Trun- 
catulina echinata, Truncatulina prcecincta, and Truncatulina reticulata; 
Rupertia crassitesta, Sagrina (?) tesselata and Sagrina virgula. 
L. Stations 221 to 236. — North Pacific, from the Equator, in long. 147° E., to Japan. 
Station 224.— March 21, 1875. Lat. 7° 45' N., long. 144° 20' E. Depth, 1850 
fathoms ; bottom temperature, 1 D, 3 C. ; Globigerina ooze. 
A white Globigerina deposit with a considerable number of Radiolaria, 
containing also fragments of pumice from the size of a pea to that of a 
hazel-nut. Many of the specimens of Globigerina and its allies and of 
Pulvinulina are of fine dimensions. Pulvinulina favus, one of the rarer 
species of the latter genus, makes its appearance at this locality. The 
material is characterised by an almost entire absence of Uvig evince and 
TextularicBy and the comparative rarity of arenaceous species. 
