312 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



Camponotus maculatus (Fabricius) ? 



Note. — Dr. W. L. Brown (personal communication, 1957) states 

 that this ant is an Old World species only. So presumably Mann's 

 record pertains to a different species. 



Commensal. — Myrmecoblatta rehni, Mexico (Mann, 1914) : "They 

 were very abundant, several occurring in almost every nest, where 

 they are no doubt very efficient scavengers." 



Camponotus rufipes (Fabricius) 



Commensals. — Atticola mortoni, Nothoblatta wasmanni, and Phor- 

 ticolea testacea, Brazil, San Leopoldo (Bolivar, 1905) : Found in the 

 formicaries of C. rufipes. 



Formica rufibarbis Fabricius 



and 

 Formica subcyanea Wheeler 



Commensal. — Myrmecoblatta rehni, Mexico (Mann, 1914) : "They 

 were very abundant, several occurring in almost every nest." 



Subfamily MYRMICINAE 



Acromyrmex lobicornis Emery 



Commensal. — Attaphila bergi, or possibly a variety of this species, 

 Huasan, Argentina? (Bruch, 1916). 



Acromyrmex lundi (Guerin) 



Synonyjny. — Atta lundi [Brown, personal communication, 1957]. 



Commensal. — Attaphila bergi, Argentina and Uruguay (Bolivar, 

 1901) : The cockroach was found in the nests of the ants sitting on 

 the back, neck, or head of sexual individuals. It remains attached to 

 the ant during swarming. The antennae seem always to be mutilated. 

 Bruch (1916) stated that in La Plata A. bergi is encountered by 

 hundreds in every nest oi A. lundi. 



Acromyrmex niger (F. Smith) 



Synonymy. — Atta nigra Schupp [Brown, p.c, 1957]. 



Commensal. — Attaphila schuppi, Brazil, Porto Alegre (Bolivar, 

 1905) : Found outside the nest of the ant and mixed in the columns 

 of ants on the march. 



