576 
THE YOYAGE OE H.M.S. CHALLENGER. 
finest of all the Uvig evince. The test is double the size of the typical Uvigerina ; pygmcea , 
and conspicuously white ; the costse are few and interrupted, and often so softened in 
outline as to be scarcely traceable. The young shell (fig. 10), which is' of about the same 
size as a fully grown specimen of Uvigerina pygmcea, has the same general conformation 
as the adults (figs. 8, 9) ; from which it is clear that the latter are not mere overgrown 
examples of the typical species. I have much pleasure in associating the name of my 
friend Dr. Schwager of Munich with so striking a form. 
The most characteristic specimens of Uvigerina schiuageri have been obtained off Kan- 
davu, Fiji Islands, at a depth of 210 fathoms, and at this locality it is very abundant. It 
also occurs off Raine Island, Torres Strait, 155 fathoms, and off the Philippines, 95 fathoms. 
Uvigerina angulosa, Williamson (PI. LXXIV. figs. 15-18). 
Uvigerina angulosa, Williamson, 1858, Rec. For. Gt. Br., p. 67, pi. v. fig. 140. 
,, trigona, Seguenza, 1862, Atti dell’ Accad. Gioenia, vol. xviii. ser. 2, p. 123, pi. ii. 
figs. 1, la. 
„ pygmcea, var. angulosa, Parker and Jones, 1865, Phil. Trans., vol. civ. p. 364, pi. xiii. 
fig. 68 ; pi. xvii. fig. 66. 
„ angulosa, Seguenza, 1879, Atti dell’ Accad. dei Lincei, ser. 3, vol. vi. p. 226, and 
p. 307. 
Uvigerina angulosa is a small species, characterised primarily by its slender propor- 
tions and trifacial compression. The test is triangular in transverse section, and tapers 
towards both ends ; the oral end finishes in a somewhat produced neck with phialine lip, 
the aboral extremity is generally obtuse or rounded. The surface is generally more or 
less costate. 
This form was perhaps first observed by Parker and Jones, by whom it was treated 
as a trihedral variety of Uvigerina pygmcea (Ann. and Mag. Nat. Hist., 1857, ser. 2, 
vol. xix. p. 297) ; but whatever may be its genetic relationship there are few forms 
more easily distinguished. Its characters are fully stated by Williamson from recent 
British specimens. 
Uvigerina angulosa is a widely distributed species. It is found in the North Atlantic, 
from the equator to lat. 65° or 70° N., at depths varying from two or three fathoms 
near the European coast-line, to 1630 fathoms in the open ocean. In the South Atlantic 
it has been observed at three Stations, with depths from 100 to 1025 fathoms; and it 
occurs at intervals in the Southern Ocean all the way from the Cape of Good Hope by 
Kerguelen Island to the Antarctic Ice-barrier. It has been met with in the Indian 
Ocean, at 900 fathoms and 1100 fathoms, and in the Mediterranean, from 90 fathoms to 
250 fathoms ; in the South Pacific at nine localities, from 8 fathoms to 1375 fathoms ; and 
in the North Pacific at two, depth 50 to 150 and 400 fathoms respectively. 
As a fossil it has been noticed in the Subapennine Clays of Italy (Parker and Jones, 
