1954] 
Michener and LaBerge — Bombus Nest 
67 
Literature Cited 
Brian, Anne D. 
1942. Division of labor and foraging in Botnbus agrorum (Fabricins). 
Jour. Anim. Ecology, 21:223-240. 
Ihering, R. von 
1903. Biologische Beobachtnngen an brasilianischen Boinbus-Nestern. 
Allgemeine Zeitsch. Ent., 8:447-453. 
Leopold, A. Starker 
1950. Vegetation zones of Mexico. Ecology, 31 :507-518. 
New Synonymy of an Australian Iridomyrmex (Hy- 
MENOPTERA: Formicidae). — Iridomyvmex biconvexus San- 
tschi, 1928, Bull. Soc. Vaud Sci. Nat., 56: 471, worker 
(Type loc. : Ringwood, Victoria. Syntypes in Naturh. Mus., 
Basel; Mus. Comp. Zool.) proves to be the senior synonym 
of Iridomyrmex foetans Clark, 1929, Viet. Naturalist, Mel- 
bourne, 46: 122, pi. 1, figs. 4, 4a, worker (Type loc.: Cann 
River, Victoria. Syntypes in Nat. Mus. Viet., Melbourne; 
Mus. Comp. Zool.) as here noticed for the first time. I have 
compared syntypes directly, and they are obviously con- 
specific. The promesonotal suture is mobile, affecting the 
alitruncal profile. I have found this species abundant in 
the Dandenongs and Warburton Ranges, Victoria, in medi- 
um to wet sclerophyll forest, particularly in those parts 
dominated by Eucalyptus regnans, although its also occurs 
down to sea level near Melbourne. Clark also found it 
common on the Otway Peninsula. In wet E. regnans-ir^a- 
fern gullies of the Warburton Range, this is the dominant 
ant species up to at least 3,000 feet. In the snow gum-grass 
areas above this, it is replaced by a similar Iridomyrmex 
identical with types of I. emeryi Crawley, but perhaps 
synonymous with some older species name. All ant names 
mentioned here are perhaps junior synonyms of older 
names obscurely attached. — W. L. Brown, Jr., Museum of 
Comparative Zoology, Harvard University. 
