28 THE PALEONTOLOGY OF MINNESOTA. 
[Trochammina. 
Foraminifera and Radiolaria were secured from Illinois boulder clay. Much time 
and labor were given to the examination of material that did not add to the interest 
or value of our collection. 
Samples of inter-glacial peat, from Blue Earth county, Minnesota, were well 
filled with more than 100 species of fresh water Diatomacee, but did not yield 
Foraminifera, while the boulder clay both above and below the ayer of peat 
afforded good specimens of them. 
Of Foraminifera we have noted the following genera and number of species in the 
material submitted to us for examination: Tvochammina, 1 sp.; Textularia, 4 sp.; 
Spiroplecta, 1 sp.; Gaudryina, 1sp.; Verneuilina, 1 sp.; Bulimina, 2 sp.; Pleurosto- 
mella, 1 sp.; Bolivina, 1 sp.; Lagena, 3 sp.; Polymorphina, 1 sp.; Nodosaria, 1 sp.: 
Uvigerina, 2 sp.; Globigerina, 4 sp.; Orbulina, 1 sp.; Anomalina, 1 sp; Pulvinulina, 
2 sp.; Operculina, 2 sp.; Nonionia, 1 sp. Total, 18 genera and 30 species, most of 
which are figured, and the original descriptions are given as nearly as possible. 
Sub-Kingdom PROTOZOA. 
Class RHIZOPODA. 
. FORAMINIFERA. 
LITUOLID AL. 
Sub-Family TROCHAMMIN A. 
TROCHAMMINA, Parker and Jones. 
TROCHAMMINA INFLATA Montagu, sp. 
PLATE D, FIG. 31. 
Nautilus inflatus MONTAGU, 1808. Test. Brit., Suppl., p. 81, pl. xviii, fig. 3. 
Rotalina inflata WILLIAMSON, 1858. Rec. For. Gt. Brit., p. 50, pl. iv, flgs. 93, 94. 
Rotalina (Trochammina) inflata PARKER and JON#s, 1859 .Ann. and Mag. Nat. Hist. ser. 3, vol. iv, 
p. 347, Figure, F. 
Trochammina inflata CARPENTER, 1862. Introd. Foram., p. 141, pl. xi, fig. 5. 
Trochammina squamata var. inflata PARKER and JONES, 1862. Introd. Foram., Appendix, p. 310. 
Trochammina inflala BRADY, 1865. Nat. Hist. Trans, Northd. and Durham, vol. i, p. 95. 
Trochammina inflata(?) TATE and BLAKE, 1876. Yorkshire Lias, p. 452 pl. xvii, fig. 18. 
Trochammina inflata BRADY 1884. Report on Foram., H. M. S. Challenger, Zool., vol. ix, p. 338, 
pl. xli, fig. 4. 
“Test free ; trochoid or convex, depressed, rotaliform ; consisting of about three 
convolutions, the outermost of which is formed of five or six very ventricose seg- 
ments with deeply excavated septal lines. Inferior face somewhat concave, with 
sunken umbilicus ; peripheral margin lobulated. Aperture small, arched ; situate on 
the inferior side of the final segment, close to the previous convolution, a little 
within the periphery. Color pale brown, the small primary segments much darker 
than the rest. Diameter ,, inch (0.7 mm).” Brapy, /oe. cit. 
Locality. Northeast Minn.(?). South Chicago, Il. 
