138 Psyche [August 



Dubia Cockerel! 1896. Glenwood Springs, Colorado {Gillette). 



Tab. 1. Allied to P. zebrata. 

 Erigeronis Cockerell 1897. Mesilla, New Mexico (Cockerell). 



Tab. 2. Male of P. fallax; cf. Ent. News, 1907, p. 55. 

 Exclamans Cockerell 1895. Las Cruces, New Mexico (Jessie 



Casad). Tab. 1, 2. At flowers of Prosopis in May. Doctor 



Howard took it at S. Jose de Guaymas, Mexico. 

 Tallax Cockerell 1896. Las Cruces, New Mexico {Cockerell). 



Tab. 1, 2. Very close to P. affi,nis. Visits Compositoe. 

 Florissantella Cockerell 1906. Florissant, Colorado {Cockerell). 



Visits Eriogonum. 

 Foxi Cockerell 1895. Santa F6, New Mexico (Cockerell). Tab. 



1, 2, Peculiar for its orange-rufous legs, and black unbanded 

 al)domen. 



Gerhardi Viereck 1904. East Chicago, Indiana (Gerhard). Tab. 

 6. Visits Monarda. A yellow species. 



Grandiceps Cockerell 1896. Las Cruces, New Mexico (Cocker- 

 ell). Tab. 1, 2, 4. Visits Solidago early in September. 



Gutierreziae Cockerell 1896. Albuquerque, New Mexico (Cock- 

 erell). Tab. 1, 2. Visits Gutierrezia. Related to P. higelovicB. 



Halictoides Smith 1853. North America. Tab. 1. Nearest 

 to P. aeneifrons; cj. Canad. Entom., 1904, p. 303. This is 

 the type of the genus. 



Heliotropii Cockerell 1900. Juarez, Mexico (Cockerell). Visits 

 Heliotropium. 



Heterothecae Cockerell 1900. Tempe, Arizona (Cockerell). 

 Visits Heterolheca. Resembles P. ignota. 



Hirsuta Cockerell 1896. Las Cruces, New Mexico (.4. M. Holt). 

 Tab. 1, 2. Flies early in May. 



Howard! Cockerell 1899. S. Jose de Guaymas, Mexico (Howard). 

 Tab. 6. Bright lemon-yellow; flies in spring. 



Hyalina Cresson 1878. Colorado (Ridings and Morrison). Tab. 4. 

 Male of P. albipennis. 



Ignota Cockerell 1896. Mesilla, New Mexico (Cockerell). Tab. 



2, 3. Visits Compositoe. Ranges to Nebraska. 

 Interrupta Cresson 1878. California (Crotch). Tab. 1. 

 Jonesi Cockerell 1906. Rosser, Texas (Bishopp). Visits Monarda; 



var. a. at Petalostemon. Allied to P. octomaculata and affinis. 

 Lacteipennis Swenk and Cockerell 1907. Niobrara, Nebraska 



