1969] Wheeler and Wheeler — A canthognathus 113 
Alistruma : both share body shape, postanal lip, mandibular blade and 
conical galea, in addition to most of the tribal characters. The next 
would be Clarkistruma with which it shares body shape and mandibu- 
lar blade. 
In our key to the genera (i960 p. 109) A canthognathus would 
come under group D but would not fit the key below that. It 
would be in a. rubric by itself, because the profile is aphaenogastri- 
form, the mandibles are podomyrmiform and hooked hairs are present. 
Literature Cited 
Brown, W. L. 
1953. A preliminary report on dacetine ant studies in Australia. Ann. 
Ent. Soc. Amer. 46: 456-471. 
Wheeler, G. C., and Jeanette Wheeler 
1954. The ant larvae of the myrmicine tribes Basicerotini and Dacetini. 
Psyche 61: 111-145. 
1960. The ant larvae of the subfamily Myrmicinae. Ann. Ent. Soc. 
Amer. 53: 98-110. 
