CORRIGHNDA. 
Page 17, ninth line from bottom, for “Monotremata” read Mono- 
delphia. 
“Page 18, seventh line, for “Monotremata” read Monodelphia. 
Page 48, preceding Sorex cooperi, insert 
GENUS SOREX. 
Smallest mammals with soft and short pelage. Both feet with five 
digits. Teeth free. Body mouse-like, with elongated head and pro- 
jecting snout, closely appresed valve-like ears concealed beneath 
the fur, and cylindrical or four-angled tail (covered with annular 
scales and hairs), which is longer than the body. Soles naked. 
Claws not retractile. Special glands near the fore legs. Eyes small. 
Dentary formula: I.3, C. 9-0, P. M. 3:5, M. 4-4,—-32. The incisors have 
toothed edges and an accessory basal hook. All the teeth are white 
with brownish tips. 
Page 48, sixth line from the bottom, insert 
Color, above grayish brown; entire under parts including tail sil- 
very. Easily distinguished from other Minnesota species by the 
size and length of tail. 
Page 78, sixteenth line, dele “PLATE VI.” 
Page 102, nineteenth line, for “Putoris” read Putorius. 
Page 108, under Ermine or White Weasel, for “Plate XV” read 
Bio. 8 A, p. 107. 
Page 158, under Fox Squirrel, dele “Plate VIII,” and at the bot- 
tom of the page the note referring to the same. 
Page 159, under Sciuropterus volucella, dele “Plate VII.” 
Page 162, under Rocky Mountain Chipmunk, dele “Plate IX.” 
Page 223, after COMMON POCKET GOPHER, insert 
Frontispiece. 
NOTE.—As originally prepared it was intended that the following 
work should be illustrated by a number of other plates, the greater 
part of them colored lithographs. On account of the cost of such 
plates many of them were rejected at once, and more recently again 
the Printing Commission decided to publish, with the exception of 
Geomys bursarius, only those which were suitable for reproduc- 
tion by the photo-engraving and half-tone processes. Unfortu- 
nately the proof-reader failed to notice, until over half the pages had 
been printed, that the corresponding changes had not been made in 
the manuscript by erasing the references to omitted plates, and to 
this oversight is due the irregular numbering of the plates and the 
fact that some of the descriptions call for plates that are not in- 
cluded. Nv Ey We 
