REHN AND HEBARD 



Measurements (in millimeters) — Continued 



167 



g'-3E 



a u 



Is 



cf Palmeriee, Arizona. Allotype; type of 



sellata. (Bklyn. Inst. A. & S.) 



c^ Huachuca Mountains, Arizona. 



(Bklyn. Inst. A. &S.) 



cf Huachuca Mountains, Arizona. 



(Bklyn. Inst. A. &S.) 



d' Phoenix, Arizona. (Hebard Collection) 



cf' Fort Grant, Arizona. (U.S.X.M.) 



cf Santa Rita Mountains, Arizona. 



(Bklyn. Inst. A. &S.) 



9 Mesilla Park, New ^Mexico. Type.l 



(Scudder Collection) 



9 Casas Grandes, Chihuahua, Mexico.! 



(A.N.S.P.) ' 



9 Camacho, Zacatecas, Mexico. (Hebard! 



i 

 Collection) j 



11.8 



12.4 



13.3 

 11.8 

 12.6 



14 



25 



23 .8 



26.3 

 23.3 



25.2 

 26 

 27 

 26 



5.2 



5.4 



Distribution. — The range of carita extend.s from southern New 

 Mexico (Mesilla Park) and south-central Arizona (Phoenix and 

 Fort Grant) south to northern Zacatecas (Camacho), Mexico, 

 the latter locality also being the most eastern, while the most 

 northern (Phoenix) is the western extreme. The vertical distribu- 

 tion can only be given approximately, as almost all of the material 

 is without exact elevation data. Judging from the localities from 

 which the species is known it would seem to range from under two 

 thousand feet (Phoenix) to at least six thousand feet (Camacho). 

 The Santa Rita records, 5000 to 8000 feet, are too indefinite for 

 their maximum elevation to be given. 



Biological Notes. — Nothing is known of the immature condition 

 or habits of the species. The period of occurrence in the adult con- 

 dition covers at least portions of three months, as specimens have 

 been examined which were taken as early as July (specifically 15th 

 and 30th) and as late as September (specifically the 12th). 



Morphological Notes. — The fastigium varies in width in the male 

 sex as in semialata, while in the three females it varies in form from 



TRANS. AM. ENT. SOC, XL. 



