1929 ] Myrmecocoles of Formica ulkei 199 
COLEOPTERA 
Carabidae 
4. Tachyura incurva (Say) Abundant. Palos: October 6 
and 13, 1928 ; April 4 and 12, August 9 and 16, 
1929. Palatine: August 6, 1929. It is interesting 
to note that this species has also been taken in the 
nests of the related host, Formica exsectoides 
(Ulke, 1890; Schwarz, 1890). 
5. Two small carabid larvae were taken from the lower 
dome galleries, one at Palos (August 16, 1929) 
and one at Palatine (August 6, 1929). 
Staphylinidae 
6. Megastilicus formicarius Casey. Palos: August 4, 
1929. It is interesting to note a further parallel 
in the myrmecocoles of ulkei and exsectoides , this 
staphylinid being reported from nests of the latter 
by Schwarz (1889). 
7. Atheta polita Melsh. This species of the Myrmedoniini 
was abundant on October 6, 1928, in the dome gal- 
leries and entrances of a weak colony at Palos. 
This species has also been recorded from the gal- 
leries of Reticulitermes flavipes by Park (1929 c), 
and Ulke (1890) mentioned finding staphylinids 
allied to Myrmedonia in numbers in the nest of a 
species of Formica. 
Leptinidse 
8. Leptinus testaceus Mull. Abundant in a weak colony of 
ulkei at Palos, October 6, 1928. 
Pselaphndse 
9. Batrisodes globosus (Lee.) October 6 and 13, 1928, at 
Palos. In numbers on the former date. 
10. B. denticollis Casey. Abundant at Palos on October 6, 
1928 ; April 4 and 12, and August 4, 1929. 
11. B. species. Palos on October 6, 1928. 
Cucujidse 
