RECENT LITERATURE 
97 
Museum. He did not, however, give a figure of it. This species was technically 
named by Kerr in 1792 (Anim. Kingd., p. 74, no. 62) Simia (Cercopithecus) 
badius. Eight years later it was renamed by Shaw (Gen. ZooL, i, pt. 1, 1800, 
p. 59) Simia ferruginea, this name being exclusively based on the “Bay Monkey” 
of Pennant. In 1812 E. Geoffroy (Ann. Mus. d’Hist. nat. Paris, xix, p. 92), 
emended Shaw’s specific designation to Colobus ferruginosus, citing Shaw’s 
Simia ferruginea as a synonym.® 
Pennant’s “Full-bottom Monkey” and his “Bay Monkey” were thus the 
base of the first two species of Colobus to receive formal technical designations, 
and were described from specimens from a known geographic source. Further- 
more they were the only species originally referred by Illiger to his genus Colobus 
as, respectively, Simia polycomus Schreber and Simia ferruginea Shaw. The 
former became (by subsequent designation) the genotype of Colobus. The 
latter {Simia badius) is here designated the genotype of Rochebrune’s genus 
Piliocolobus (1866), as I fail to find a previous designation of a genotype for this 
genus. 
— J. A. Allen. 
RECENT LITERATURE 
Grinnell, Joseph, and others. California Ground Squirrels. A Bulletin 
DEALING WITH LiFE HISTORIES, HaBITS AND CONTROL OF THE GrOUND SqUIRRELH 
IN California. Monthly Bull. California State Comm. Horticulture, vol. 7, 
nos. 11 and 12, November-December, 1918, pp. 595-807, or separate pp. 1-203. 
January 27, 1919. 
This bulletin was put forth to serve as a “manual for the use of county hor- 
ticultural commissioners and systematic workers,” and constitutes “a veritable 
textbook, through the aid of which it is now possible for the agricultural teacher 
throughout the public schools to place the subject clearly and concisely before 
the young patriots who are aiding so largely in the work of extermination.” 
Its scope will be indicated by the list of articles included: Natural history of 
the ground squirrels of California, by J. Grinnell and J. Dixon; The Columbian 
Ground Squirrel, by W. T. Shaw; A history of ground squirrel control in Cali- 
fornia, by W. C. Jacobsen; A study of fumigation methods for killing ground 
squirrels, by John S. Burd and G. R. Stewart; The Rodent Control Division, by 
S. V. Christierson and C. A. Wilkins; and Rodent Eradication work of the Biologi- 
cal Survey in California, by F. E. Garlough. Formulas for destroying rodents 
are given in the appendix. 
The ground squirrels dealt with by Grinnell and Dixon include eighteen forms 
occurring in California belonging to three genera as follows: Citellus, twelve 
species or subspecies ; Callospermophilus, three ; Ammospermophilus, three. Shaw’s 
paper pertains to the chief rodent pest occurring in eastern Washington and 
portions of neighboring states, the Columbian ground squirrel {Citellus colum- 
® In 1895, in a paper on the names of mammals given by Kerr (Bull. Amer. Mus. 
Nat. Hist., vii, pp. 179-192), I called attention (1. c., p. 186) to the availability 
of Kerr’s name badius over Shaw’s Simia ferruginea. 
