55 
1954] Creighton and Gregg — Cryptocerus texanus 
of Texas. On the other hand the records from Nuevo Leon 
are a significant southern extension of the range. It may 
be recalled that Dr. Smith had specimens of texanus which 
came from Mexico but the source of these specimens was 
unknown. It is now clear that texanus occurs in the foot- 
hills of the Sierra Madre Oriental at least as far south as 
the latitude of Linares (24° 40') . Of the five colonies taken 
in Nuevo Leon, one came from El Pastor, a small village 
west of Montemorelos, and the remaining four from Itur- 
bide Canyon, west of Linares. In this area the ant nests 
at elevations about the 2300 foot level, a considerable ele- 
vational rise over the stations in southern Texas, none of 
which were more than a few hundred feet above sea-level. 
In addition to texanus the following cephalotine ants 
were taken in eastern Mexico: 
Procryptocerus scabriuseulus Em. 
Cryptocerus scutellatus Sm. 
Cryptocerus cristatus Em.^ 
C. {Paracryptocerus) minutus Em. 
Because of the lack of reliable records from eastern 
Mexico a list of the localities where these species were 
taken is presented here: 
San Luis Potosi: 
Tamazunchale (600-800') five colonies of C. {Paracrypto- 
cerus) minutus; one colony of C. scutellatus; Xilitla 
Ferry (200') 22 miles north of Tamazunchale, one col- 
ony of C. {Paracryptocerus) minutus; Xilitla (1800') 
one colony of C, {Paracryptocerus) minutus, one colony 
of Procryptocerus scabriuseulus; 3 miles east of Xilitla 
(2000') one colony of Cryptocerus cristatus; Axtla 
(200') 23 miles northeast of Tamazunchale, one colony 
of Cryptocerus scutellatus^; 22 miles east of Ciudad del 
^The single colony of cristatus which was taken consisted of eight majors 
and 330 medias and minors. Kempf believes that majors are seldom 
produced by cristatus, for he found none in the material which he ex- 
amined. But since this material consisted of only 35 minors and 17 
females coming from 11 stations, it seems probable that Kempf ’s con- 
clusion is the result of inadequate series. 
^This colony was observed in an artificial nest for a period of three 
weeks. These observations indicated that the habits of scutellatus do 
not differ significantly from those of texanus. 
