PHYSIOLOGICAL ANIMAL GEOGRAPHY 573 
This species includes several races which seem, according to 
the accounts of entomologists and my own observation, to be 
very similar in habits. It stretches across the middle region of 
North America, and ranges from the sea level to 7536 feet and 
throughout four of the zones of Merriam without regard to vege- 
tation, efficient temperature or other climatic condition (table 3). 
A consideration of the races involved is necessary (Horn, ’05; 
Wickham, ’06). The records represented by dots (fig. 14) adjoin- 
ing the Pacific Coast are for well recognized races. All others 
have been cast into synonomy by good taxonomists. The remain- 
ing records including 1I—9 of fig. 14 are then for a single race. Fur- 
thermore two of the races sometimes recognized, horiconensis 
and Wickham’s southern race, have been produced by suitable 
conditions during the late larval and pupal life. Table 3 shows 
the relation of a single race to climatic conditions. 
TABLE 3 
The relation of the distribution of C. tranquebarica to climate. Vegetation and rain- 
fall are approximated, especially for Albertaand B.C. Life zones are approximated 
where detailed maps are not available. The vegetation at Kalso is in question but 
the species has been taken in the mountains near, where there can be little doubt that 
it is coniferous forest. The numbers at the left refer to fig. 14. 
PLACE i STATE = ioe ee RAIN FALL VEGETATION | ( See mM) COLLECTOR 
1 Woods Hole Mass. 5 45.0 deciduous | Transition Author 
forest 
2 | Meridian Miss. 358 58.0 deciduous | Lower Aus- U.S.N.M. 
forest tral 
3 Alamosa Col. 7536 15.0 steppe Upper “ Author 
4  Aweme Man.; 1180 17.45 steppe Boreal Criddle 
5 | Innisfail Alb. 3600 15.0 steppe Boreal TN. Will- 
ing 
6 Caliente Nev. 4407 7.0 desert Lower Aus- Author 
tral 
7 \|Hagerman Id. | 2600 10.0 semi-desert | Upper Aus-, Author 
tral | 
8 Kalso Bai: 1870 25.0 conifer for- Boreal ‘I. W.Cockle 
est 
9 Bridgeport Cal. 64 Seid desert Lower Aus- Wickham 
tral 
JOURNAL OF MORPHOLOGY, VOL. 22, NO. 3 
