RADJOLARIA, SPOROZOA. 
grot, 29 
Class 7. — RADIOLARIA * . 1 
• ' ' " t -x, 
f Caryosphcera cequidistans , Pierre Formation, Manitoba, ROst, p. 104, 
pi. xiv, figg. la & 1 5, Geol. Survey, Canada, 1892, ri. sp. 
f Cenellipsis hexagoncilis, Pierre Formation, Manitoba, RuSt, p. 104, pi. xiv, 
fig. 2, Geol. Survey, Canada, 1892, n. sp. 
f Cyrtocalpis crassitestata, Pierre Formation, Manitoba, Rust, p. 105, 
pi. xiv, fig. 4, Geol. Survey, Canada, 1892, n. sp. 
f Dictyocephalus microstoma , p. 105, pi. xiv, fig. 5, macrostoma , p. 106 
pi. xv, fig. 1, Pierre Formation, Manitoba, Rust, Geol. Survey, 
Canada, 1892, n. spp. 
f Dictyomitra canadensis , Pierre Formation, Manitoba, Rust, p. 108, 
pi. xvi, fig. 1, Geol. Survey, Canada, 1892, n. sp. 
f Prumduni calococcus , Pierre Formation, Manitoba, Rust, p. 105, pi. xiv, 
fig. 3, Geol. Survey, Canada, 1892, n. sp. 
f Stichocapsa tyrelli , p. 110, pi. xvi, fig. 4, dawsoni , p. 110, pi. xvi, fig. 5, 
Pierre Formation, Manitoba, Rust, Geol. Survey, Canada, 1892, 
n. spp. 
j* Theocampe spliairoccpliala , Pierre Formation, Manitoba, Rust, p. 106, 
pi. xv, fig. 2, Geol. Survey, Canada, 1892, n. sp. 
f Tricolocapsa thoracica , p. 107, pi. xv, fig. 4, dowlingi , p. 108, pi. xv, fig. 5, 
selwyni , p. 108, pi. xv, fig. 6, Pierre Formation, Manitoba, Rust, 
Geol. Survey, Canada, 1892, n. spp. 
B. — GORTICATA. 
Class 1.— SPOROZOA. 
Linger (123) gives the following classification of the Gregarinidea : — 
a. Gymnosporea. 
The spores are without protecting envelope. 
Fam. Gymnosporidce. 
n. AngiospoRRa. 
The spores are always covered by a resistant membrane, 
which may be either simple or double. 
I. Polycystidea : the spores have equal poles. 
a. With regular smooth spores. 
Fam. Glepsidrinidce , Anthocephalidce , Dactylophoridce , 
Actinocephalidce. 
b. With regular, spiny spores. 
Fam. Acanthosporidcc . 
c. With irregular spores. 
Fam. Styloi'hynchidce , Menosporidce. 
II. Monocystidea : the spores have unequal poles. 
Fam. Gonosporidce , , TJrosporidcc. 
1893. [vol. xxx.] f 9 
