214 KELLOGG AND BELL 



age (workers). Also series of the progeny of a single mother 

 (queen) may be compared with a series of individuals represen- 

 ting several different mothers (queens). Altogether the honey 

 bee is an animal species of unusual availability and worth to the 

 student of variation. 



Variations in Character of Venation. A lot of 300 drones 

 from our laboratory hive (Italians) was examined for variations 

 in the character of the venation. (The wings were removed 

 and mounted on glass slides). 



FIG. i. Fore and hind wings of honey bee (drone) showing normal vena- 

 tion ; points where variation may occur indicated by numbers. 



The normal venation of the front wings is shown in figure i . 

 The variations observed in the fore wing consist of the complete 

 or partial absence of the little cross vein at point i characterized 

 as " var. i complete," and " var. i incomplete," and of the ad- 

 dition of a spur at points 2, 3 to 4, characterized as "var. 2," 

 " var. 3," and "var. 4" "slight" or "very slight" depending 

 on length of the spur ; and of the interpolation of a complete or 

 almost complete new cell in the discal region of the wing, char- 

 acterized (and in each case figured) as " complete new cell " and 

 " almost complete new cell." (See Figs. 2-5 for illustration of 

 these variations.) 



Of the 300 left fore wings, 22 were torn ; of the remaining 

 278: 100 show no variation (fig. i) ; 77 show var. 2, var. 3 

 or var. 4, in either very slight, slight, "fair," "good" or 

 " marked" degree or two or three of these variations in combi- 



