1985] 
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353 
Acknowledgments 
We thank W. M. Maddison for collecting the clean Z. varians 
specimens, and Ed Seling for valuable SEM work. Funds were pro- 
vided by NSF Grants PCM 83-01763 and BNS 82-19060. 
Literature Cited 
Kempf, W. W. 
1958. New studies of the ant tribe Cephalotini (Hym. Formicidae). Studia 
Entomol. 1: 1-176. 
Holldobler, B. and E. O. Wilson. 
1986. Soil-binding pilosity and camouflage in basicerotine and stegomyrme- 
cine ants (Hymenoptera: Formicidae). Zoomorphology (in press). 
Wheeler, W. M. 
1927. Physiognomy of insects. Q. Rev. Biol. 2: 1-36. 
1942. Studies of Neotropical ant-plants and their ants. Bull. Mus. Comp. Zool. 
90: 1-262. 
