1933] 
Mermis Parasitism in Ants 
29 
from observations made by Stoll in Guatemala as follows : 
“This race is abundant in Central America. Mr. Stoll found 
it and varieties transitional to esuriens very common in the 
environs of Guatemala City and Antigua (cities at an alti- 
tude, with cool climate), making its nest in dry cowdung 
and often also under stones. Mr. Stoll has also found small 
Fig 1 . 3. Cam'ponotus ( M yrmothrix ) abdominalis Fabr. subsp. stercorarius 
Forel. A, mermithergate, in profile; B, head of same, dorsal view; 
C, head of worker maxima, dorsal view; D, thorax and petiole of 
same, in profile; E, head of worker minima, dorsal view; F, thorax 
and petiole of same, in profile; G, head of female, dorsal view. 
formicaries of C. stercorarius established in the large dried 
fruits of Lucuma mammosum that had fallen to the ground. 
These fruits have a hard rind 15 cm. long enclosing a soft 
pulp and a hard pit 7 to 8 cm. in length. The ants with their 
larvae and cocoonsl simply occupied the cavity of the fruit 
from which they had probably removed the pulp.” 
