230 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.41. 



grayi Cockerell, 1903. Corvallis, Oregon, May 7 (Cordley). Tab. 6, 9. 

 *grayi eastonensis Cockerell, 1903. Easton, Washington. Tab. 9. 



Type.— Cat. No. 13163, U.S.N.M. 

 *grindelise Cockerell, 1903. Lincoln, Nebraska, Sept. 2 (Crawford). Tab. 1. 



Male black; female with red abdomen. 

 gutierrezix Cockerell, 1896. Mesilla Park, New Mexico (Cockerell). Tab. 1. 



Type.—C&i. No. 5322, U.S.N.M. 

 heiligbrodtii Cresson, 1878. Texas (L. Heiligbrodt). Tab. 10. 



Allied to N. modesta. 

 *heleniella Cockerell, 1911. Victoria, Texas (J. C. Crawford). Subg. Melanomada. 



Type.— Csit. No. 13431, U.S.N.M. 

 hemphilli Cockerell, 1903. S. California. Tab. 4. 

 hesperia Cockerell, 1903. S. California. Tab. 4. 

 hoodiana Cockerell, 1903. Mount Hood, Oregon. 

 illinoensis Robertson, 1900. Illinois (Robertson). Tab. 12. 



Was confused with N. sayi; abdomen of female nearly always 5- or 6- spotted, 

 mfencato Smith, 1854. " United States. " 



Notes on type; Trans. Amer. Ent. Soc, vol. 31, p. 310. 

 Hncerta Cresson, 1863. "Conn., N. J., Pa., Md., Ills." 



Female abdomen ferruginous, immaculate. 



Same as N. articulata. 

 infantula Cockerell, 1907. Great Falls, Virginia, May 22 (N. Banks). 



A very small species, about 5 mm. long. 

 integerrima Dalla Torre, 1896. 



Apex of male abdomen entire, 

 integrm Robertson, 1893. Illinois (Robertson). Tab. 12. {Phor integer.) 



Name preoccupied; =integerrima. 

 intercepta Smith, 1879. Vancouver Island. 



Notes on type; Trans. Amer. Ent. Soc, vol. 31, p. 312. 

 interrupta Fowler, 1899. Berkeley, California (H. 0. Woodworth). 



Name preoccupied; =interruptella. 

 interruptella Fowler, 1902. 

 itamera Cockerell, 1910. Pullman, Washington (W. M. Mann). Subg. Nomada 



8. str. 

 jennei Cockerell, 1906. N. Yakima, Washington, Sept. 26 (E. Jenne). 



Although the anterior coxae are not spined, they have minute red tubercles. 



Probably nearest to N. pascoensis, which is quite differently colored. 

 jocularis Cresson, 1879. Nevada (Morrison). 

 kincaidiana Cockerell, 1903. Washington. 

 Jcrugii Cresson, 1878. Porto Rico (Leopold Ki'ug). 

 lamarensis Cockerell, 1905. Lamar. Colorado. (E. D. Ball). Tab. 1. 

 Hatifrons Cockerell, 1903. Santa Cruz Mountains, California. Tab. 4. 



Variety from Nevada; Proc. Acad. Nat. Sci. Phila., 1903, p. 588. 



Type.— C&t. No. 13155, U.S.N.M. 

 Hehighensis Cockerell, 1903. Lehigh Gap, Pennsylvania. (Viereck). 



Paratype.—C&t. No. 13831, U.S.N.M. 

 *lepida Cresson, 1863. Pikes Peak, Colorado; Rock Island, Illinois. Tab. 1, 9, 11. 



Subgenus Gnathias. 



New description; Proc. Acad. Nat. Sci. Phila., 1903, p. 596. 

 Hewisi Cockerell, 1903. Corvallis, Oregon, May and June (Cordley). Tab. 6. 



Paratype.— Cat. No. 13188, U.S.N.M. 

 *libata Cresson, 1878. Colorado (Ridings). Tab. 1. 



For characters see Cockerell, Proc. U. S. Nat. Mus., vol. 39, 1911, p. 648. 

 limata Cresson, 1878. Mexico (Sumichrast). 



Resembles the Cuban N. tibialis. Also in Texas. 



