REHN AND HEBARD 111 



out several years later, ''^ while in the same paper Scudder^** de- 

 scribed a species from the same region as Arethaea consuetipes, 

 which we now know to be a member of the genus Insara. In 1902, 

 Scudder described a second brachypterous female individual from 

 New Mexico as A. carita.^^ Rehn, in 1907, based the species .4. 

 sellata^^ on a macropterous male from Arizona. 



The recognition of Thomas's species has been the greatest diffi- 

 culty with most of the previous authors, Brunner first erroneously 

 determining it, in which he was followed by Scudder, who in so 

 doing, relegated to the synonymy a perfectly valid name of his 

 own. 



Material Examined.— 272; 156 males, 98 females, 18 immature 

 specimens. 



The majority (153) of these specimens were taken by the authors 

 on recent trips and are located in the Hebard Collection and that of 

 the Academy of Natural Sciences of Philadelphia. Of the remain- 

 ing specimens we find 23 in the Hebard Collection; 20 in the Acad- 

 emy of Natural Sciences of Philadelphia; 24 in the Scudder Collec- 

 tion at the Museum of Comparative Zoology, and 26 in the United 

 States National Museum, loaned to us through the kindness of Mr. 

 A. N. Caudell. The material of the genus in the collections of the 

 Brooklyn Institute of Arts and Science, the American Museum of 

 Natural History, the University of Kansas and the University of 

 Nebraska was also placed at our disposal by the authorities in 

 charge. To all those who so kindly assisted us in our work we wish 

 to express our sincere thanks. 



In the preparation of the paper the types of the following species 

 have been examined by us. 



Arethaea arachnopyga n. sp. 



Arethaea gracilipes (Thomas) * 



Arethaea insaroides n. sp. 



Arethaea phalangium (Scudder) 



Arethaea grallator (Scudder) 



Arethaea semialata n. sp. 



Arethaea carita (Scudder) 



" Psyche, IX, p. 381. 



«4 Canad. Entom., XXXII, p. 332. 



" Proc. Davenp. Acad. Sci., IX, p. 52. 



" Proc. Acad. Nat. Sci. Phila., 1907, p. 61. 



TRANS. AM. ENT. SOC, XL. 



