1955] 
Gregg — V eromessor lobognathus 
51 
Postscript 
Since this paper first went to press, some important 
new data have come to light. Dr. Dallas Sutton, while 
collecting a few ants for me, obtained specimens of V. 
lobognathus in pinyon-cedar woodland with sagebrush, at 
6,500 feet, twenty miles southwest of Rangely, Colorado, 
on August 26, 1952. As he was unaware of the nature of 
his find, no other data are available. An additional record 
also has been kindly reported in correspondence by Dr. 
A. C. Cole. The ants were secured during the summer of 
1954 at a point forty-five miles west of Ely, Nevada, in 
sagebrush desert, and according to Dr. Cole, occupied a 
small pebble mound nest. 
These two records are extremely valuable not only be- 
cause they extend the known distribution of lobognathus 
hundreds of miles beyond its previous boundaries, but 
serve to establish possible connections with other mem- 
bers of the genus, notably V. lariversi in eastern California 
and western Nevada. Thus the most western station for 
lobognathus is now in eastern Nevada (near Ely), and it 
is not observed again until the localities in northwestern, 
western, and northern Colorado are reached. Finally, it 
reappears in southwestern Missouri. Wherever else the 
species may be discovered, it seems safe to predict that 
it should exist in some parts of Utah and of Kansas, but 
such a pattern if filled out would not correlate with any 
major natural features of the continent, such as mountains, 
desert basins, or prairies. Rather, it would cut across 
these features. The species may prove eventually to have 
a wide but very local and patchy type of distribution, the 
elucidation of which will require extensive search and 
many more records. 
Literature Cited 
Andrews, H. 
1916. A new ant of the genus Messor from Colorado. Psyche, 23:81-83, 
1 fig. 
Creighton, W. S. 
1950. The ants of North America. Bull. Mus. Comp. Zoo!.. 104, p. 160. 
1953. New data on the habits of the ants of the genus Veromessor. 
Amer. Mus. Novit., No. 1612, p. 7. 
