502 Bulletin American Museum of Natural History \\'o\. XLII 



ziegleri mayarum Cockeivll, 19126, p. 311. S. Quirigua, Guatemala; 

 (W. P. ("ockcrell.) 



BOMBIDiE 



Franklin (1913 and 1913a) lias given such an excellent account of 

 the American species that we have followed him for the most part, al- 

 though we do not agree entirely with his treatment of varieties. 



Apathus Newman 

 See Psithyrus and Bombus. 



Bomhias Robertson 

 See Bombus. 



Bombus Latreille, 1802a, p. 385 (in part) 

 (See also Lutreille, 1802, p. 437. Type: Apis terrestris Linnaeus) 

 Bremus (Panzer, 1801; see, also, Morice and Durrant, 1914, p. 

 428) is accepted by some recent authorities as the name for this genus, 

 but the case is still debatable and it seems better to use here the well- 

 known namo.^ 



Bombias Robertson, 1903, p. 176 (Type: B. auricomus Robertson) 

 was proposed as a separate genus but we have followed Franklin, 1911, 

 p. 161, in treating it as a subgenus. The subgenera may be further sub- 

 divided into "groups' 'as follows. 



Bombus Bombias 



Dunioueheli Group Fraternus Group 



Pratorum " Auricomus " 



Kirbyellus 

 Borealis " 



Terrestris " 



See, in this connection, Radoszkowski, 1884a, pp. 51-92. The group.s to 

 which the North American species have been referred, chiefly by Frank- 

 lin, 1913 and 1913a, are indicated here by initials in square brackets 

 placed before the specific names. 



Cockerell and McNary, 1902, p. 71, discuss mouth-parts in their 

 relation to flowers. 



The following names should be dropped as unrecognizable. 

 Apis (data F'abricius, 1798, p. 274, or Bombus elatus Fabricius. 

 1804, p. 352, may be Apathus citrinus Smith, 1854, p. 385 male of 

 Psithyrus laboriosus. 



'I do not consider that there is any valid reason for using Bremu. T. D. A. C. 



