REPORT OR THE FORAMIRIEERA. 
717 
orifices the pore-canals appear to serve both for the passage of the sarcode stolons con- 
necting the segments and as the general aperture of the test. 
The living representatives of the genus affect the shallow zones of temperate and 
tropical seas, and are seldom found at greater depths than 400 fathoms. Fossil examples 
are met with in various deposits of Miocene and Pliocene age. 
Gypsina globulus , Reuss, sp. (PI. CI. fig. 8). 
Ceriopora globulus, Reuss, 1847, Haidinger’s Naturw. Abhandl., vol. ii. p. 33, pi. v. fig. 7. 
Orbitolina Icevis, Parker and Jones, 1860, Ann. and Mag. Rat. Hist., ser. 3, vol. vi. p. 31, 
No. 7. 
Tinoporus pilaris, Brady, 1876, Ann. Soc. make. Belg., vol. xi. p. 103. 
„ baculatus, var. splicer oidalis, Carter, 1877, Ann. and Mag. Rat Hist.,, ser. 4, vol. xix. 
p. 215, pi. xiii. figs. 18, 20. 
Gypsina vesicularis, var. splicer oidalis, Id. 1877, Ibid., vol. xx. p. 173. 
The descriptive terms employed by Reuss for the present species, as well as the 
figures which accompany them, particularise the spherical contour of the little fossils to 
which they refer. The name, however, has been used by Continental writers in a some- 
what wider sense, to include also the less regular varieties .with rounded outline, whether 
subconical, oval, or compressed, some of which are provided for by Gypsina vesicularis 
and Gypsina inheerens. As compared with these, the recent specimens of the typical 
globular form are of smaller size, the superficial areolation of the test is more regularly 
polygonal, though not so strongly marked, and the perforation of the walls is finer and 
less conspicuous externally. These are the only characters on which a distinction can be 
founded, and they are of very little zoological value. 
Mr. Carter is probably quite correct in his suggestion that the Miocene fossil 
described by myself some years ago under the name Tinoporus pilaris, may belong 
to the present species. The comparatively large dimensions of the test, £th inch 
(4 mm.) diameter, or even more, and the nearly or sometimes quite smooth and 
structureless exterior, led me at first to suppose that it was specifically distinct. 
Gypsina globulus is seldom found except in company with Gypsina vesicularis; but 
though the geographical distribution of the two forms is coextensive, the latter is much 
more abundant. They occur together in the coral-sands of warm latitudes, at depths 
ranging from the littoral zone to about 400 fathoms. Small examples are occasionally 
met with on the northern and western shores of the British Islands. 
Both have been obtained in the fossil condition from the Miocene formations 
of Austria and Hungary, Malta, and Jamaica ; and from the Pliocene of Costa Rica ; 
and, according to Parker and Jones, from “the Tertiary beds of Palermo, Bordeaux, and 
San Domingo.” 
(ZOOL. CHALL. EXP. — PART XXII. 1884.) 
Y 91 
