REHN AND HEBARD 169 



Palmerlee, Cochise County, Arizona, July 30, 1905 (1), (C. Schaeffer), 2 c? 

 (one=- Alio' ijpe = type of sellala), [Bklyn. Inst. A. and S.]; July 15, (H. Kae- 

 ber), 1 o^ [A.N.S.P.]. 



Huachuca Mountains, Arizona, (C. Schaeffer), 7 <f, [Bklyn. Inst. A. and 

 S.]. 



Phoenix, Arizona, (R. E. Kunz6), 1 d", [Hebard Collection]. 



Fort Grant, Arizona, 1 c?, [U.S.N.M.]. 



Fort Buchanan, south of Tucson, Arizona, 1 d", [Scudder Collection]. 



Santa Rita Mountains, Arizona, 5000 toSOOOfeet, July, (F. H. Snow), 2cf, 

 [Univ. of Kansas]; same data without elevation, 2 d', [Bklyn. Inst. A. andS.]. 



Casas Grandes, Chihuahua, Mexico, September, (W. E. Hughes), 1 9, 

 [A.N.S.P.]. 



Camacho, Zacatecas, Mexico, September, (L. Bruner), 1 9, [Hebard 

 Collection]. 



Arethaea brevicauda (Scudder) (Figs. 47, 57, 69 and 70.) 



1900. Dichopetala brevicauda Scudder, Canad. Entom., XXXII, p. 331. 

 [Cahon Pass, California.] 



1902. Arethaea brevicauda Morse, Psyche, IX, p. 3S1. (Generic Assign- 

 ment.) 



1906. A[rethaea] brevicauda Kirby, Synon. Catal. Orth., II, p. 444. [Cali- 

 fornia.] 



This species needs comparison witli only two forms, A. carita 

 and limifera. From carita it can readily be separated in the male 

 sex by the stridulating field of the tegmina being shorter and 

 broader, with its free margin much produced at the apex of the 

 stridulating vein and the same vein straight, in the narrower distal 

 section of the subgenital plate and more crassate cerci, as well as 

 the proximo-dorsal abdominal segment of the same sex having a 

 decided process; the female sex differs from that of carita in the 

 very abbreviate, sublobate and overlapping tegmina, which are 

 shorter than the pronotal disk. From the male of limifera (the 

 only sex known of that species) the same sex of brevicauda differs 

 chiefly in the projection at the apex of the stridulating vein being 

 less decided and not as peg-like. Additional features separating 

 brevicauda and limifera exist, these being treated under the latter 

 species. 



Type— 9; Cahon Pass, California. July 18, 1897. (A. P. 

 Morse.) [Scudder Collection.] 



Description of Type.— Size rather small; form subcompressed. Head 

 with the greatest breadth immediately ventrad of the eyes contained about 

 one and one-half times in the depth of the head; occiput moderately in- 



TRANS. AM. ENT. SOC, XL. 



