16 Psyclie [February 



PROFESSOR EMERY'S SUBGENERA OF THE GENUS 

 CAMPONOTUS MAYR. 



By AVilliam Morton Wheelee, 

 Bussey Institution, Harvard University. 



The great cosmopolitan ant-genus Camponotus, now comprising 

 fully 500 species and as many subspecies and varieties, has become 

 so unwieldy that subdivision has become imperative. As long ago 

 as 1896 Emeryi made a serious attempt to render it more manage- 

 able by dividing it into three cohorts (Arcuati, Capitati and Angu- 

 losi) and numerous maniples based for the most part on geograph- 

 ical groups of species. Forel finally grasped the nettle in 1912- 

 and established 16 subgenera in addition to Colohopsis Mayr, 

 which had long been accorded subgeneric rank.. -Although he cited 

 species under each subgenus he failed to designate any subgeno- 

 types. I undertook to supply this omission in 1913.^ In 1914 

 he issued a more extensive account of his subgenera,'^ increased 

 their number to 2-1, and appended an extensive list of the known 

 species. In this paper he cited a type for each subgenus but paid 

 no attention to my designations. It happened, however, that in 

 all but eight of the subgenera we had selected the same species. 

 Now Emery ^ has issued a most painstaking study of the genus and 

 has increased the number of subgenera to 31, excluding the mono- 

 typic Phai^momyrmex Stitz, which he has elevated to generic rank. 

 He has also estal^lished a new genus, Notostigma, for three Aus- 

 tralian si)ecies {carazzU, foreli and podenzanai) , two of which 

 were formerly included by Forel in his subgenus Myrmosphinda. 

 The outlines of the various subgenera have been more accurately 

 defined, much use has been made of the geographical distribution 

 of the species, and the characters of the male Camponoti, which 



^ Saggio di un Catalogo Sistematico dei Geneii Camponotus. Polyrhachis e 

 Afflni. Mem. R. Accad. Sc. 1st. Bologna (5) 5, 1896, pp. 761-780. 



2 Formicides Neotropiques Part VI, Mem. See. Ent. Belg. 20, 1912, pp. 59-92. 



3 Corrections and Additions to "List of Type Species of the Genera and 

 Subgenera of Formicidae," Ann. N. Y. Acad. Sc. 23, 1913, pp. 77-83. 



* Le Genre Camponotus Mayr et les Genres Voisins. Rev. Suisse Zool. 22, 

 1914, pp. 257-276. 



° Le Genre "Camponotus" Mayr, Nouvel Bssai de sa Subdivision en Sous- 

 Genres. Rev. Zool. Africaine 8, 1920, pp. 229-260, 1 flg. 



