384 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.41. 



Black, not densely pilose; mandibles piceous; scape, pedicellum, legs 

 below coxae yellowish-pallid. Wings dusky liyaline, venation dark 

 brown. 



Male. — What seems to be the male (from the same locality) 

 differs from the female in the rather longer antennae, the third joint 

 not half again as long as the fourth, middle fovea larger, wings some- 

 what clearer. Hypopygidium truncate apically. 



Cordoba, Vera Cruz, Mexico. One female collected June 14, and 

 one male collected January 31, 1888, by Frederick Knab, for whom 

 it is named. 



Type.—Csit. No. 14020, U.S.N.M. 



Genus LYCAOTA Konow. 



Due to the great color antigney in this genus the males and females 

 have in some cases been described as different species. 



LYCAOTA SODALIS (Cresson). 



Selandria sodalis Cresson, Trans. Amer. Ent. Soc, vol. 8, 1880, p. 44, female. 

 Lycaotafusca Rohwer, Can. Ent., vol. 40, 1908, p. 108, male. 



A common species in parts of Colorado. 



LYCAOTA SPISSIPES (Cresson). 



Selandria (Hoplocampa) spissipes Cresson, Trans. Amer. Ent. Soc, vol. 8, 1880, 



p. 14, female. 

 Selandria (Hoplocampa) lenis Cresson, Trans. Amer. Ent. Soc, vol. 8, 1880, p. 14, 



male. 



This little species may be easily known in the female by the broad 

 sheath which is truncate apically and broadly emarginate below. 

 F. Knab collected two females and a male at Oxbow, Saskatchewan 

 during the summer of 1907. 



LYCAOTA SPISSIPES BRUNNEUS, new variety. 



Female. — ^Length 6.5 mm. Differs from typical spissipes iii the 

 pale mesopectus, mesoscutum, orbits and two 

 basal joints of antennae. 

 Montana. Two females. 

 Type.— Cs^i. No. 13838, U.S.N.M. 



Fig. 3.— Sheaths of Lycaota. 



LYCAOTA COLORADENSIS, new species. 



Female. — Length 5.5 mm. Supraclyapel 

 foveae large, connected with the smaller 

 OF COLORADENSIS RoEWER. 6, antenual foveae; supraclypeal area flat; 

 OF SPISSIPES (CRESSON). j^^^^^^ ^^^^^ ^^^^ stroDgly brokcn ; middle 



fovea well defined, more distinctly so below, not sharply separated 

 from the ©cellar basin ; ocellar basin not closed below, defined laterally 

 by fine ridges; postocellar area convex, defined laterally by a puncti- 



