50 
Dr. G. J. Hinde on Radiolaria from the 
Stauroplegma brevispina , sp. n. (PI. IV. fig. 5.) 
Surface of cortical shell smooth, the outer wall distinct 
from the interior mesh work, the medullary test now shown 
by its darker structure. Radial spines conical, shorter than 
the radius of the test. Diameter of shell *16 millim., of 
medullary test *06 ; length of spines *04, basal thickness *017. 
Distribution . Hartree Hill, Kilbucho, Peeblesshire. 
Stauroplegma compressum , sp. n. (PI. IV. fig. 6.) 
Test slightly elliptical, in part perhaps due to compression ; 
surface uneven, with here and there circular pores *015 millim. 
wide. The spines tapering, about two thirds as long as the 
diameter of the test, apparently unequal in length ; they can 
be traced to the surface of the inner shell. Diameter of test 
*16, of inner shell *06 ; length of spines *09 to *12, width at 
base *013 millim. In the specimen figured one spine has 
been broken off. Rare. 
Distribution. Near Moorfoots, Edinburghshire. 
Stauroplegma barbatum y sp. n. (PI. III. fig. 6.) 
Surface of cortical test rough, as if with minute spines. 
The medullary test indicated in the specimen figured by a 
partially clear subcentral space. Spines longer than the 
diameter of the sphere ; they are not strictly in the form of 
a cross, but their present position may in part arise from sub- 
sequent misplacement. Diameter of sphere T35j length of 
spines T8, thickness at base *02 millim. Rare. 
Distribution. Hartree Hill, Kilbucho, Peeblesshire. 
Stauroplegma dijfusum , sp. n. (PI. IV. fig. 4.) 
Surface of cortical test irregular and uneven ; an inner 
medullary shell is shown by a ring of darker structure, and 
within this is a central lighter space, which may perhaps indi- 
cate the presence of a second medullary test. The radial 
spines are shorter than the radius of the sphere, measuring 
from the surface. Diameter of sphere *13, of outer medullary 
test *07, of inner test (?) *03 millim. ; length of spines *04, 
thickness at base *012 millim. 
Distribution. Hartree Hill, Kilbucho, Peeblesshire. 
Family Astrosphaerida, Haeckel. 
Sphaeroidea with numerous (8 to 12 or more, commonly 
