26 THE ENTOMOLOGICAL CODE. 



For the sake of uniformity, it is recommended that the following 

 scheme of grouping be followed in the order indicated below when- 

 ever applicable: 



Order. Genus. 



Suborder. Subgenus. 



Superfamily. Species. 



Family. Subspecies or variety. 



Subfamily. Race. 



Tribe. Aberration, sport, &c. 



Subtribe. 



• 



In cataloging, the employment of a small serial number after each 

 reference, to be repeated in connection with the citation of informa- 

 tion therein given, will indicate the authority for each item. 



Example. — Beta alba (Smith). 



Alpha alba Smith, Proc. Ent. Soc. Paris, vol. xii, p. 

 76 (1900) (i); Jones, Rev. Ent. Inf., vol. ii, p. 7 

 (1904) < 2 > ; Beta alba Brown, Ent. Journ., vol. lv, 

 p. 80 (1911) < 3 >. 



Hab.— United States* 1 - 3 ); Mexico* 2 ). 



Feeds on Salix^ ; $ dimorphic (2) . 



Thus Brown is responsible for the statement that it feeds on Salix, 

 and Jones for the male being dimorphic, and occurrence in Mexico. 



