144 FAMILY EVANIID^. 



Abdomen long and narrow; the j)etiole punctulate, two-thirds the length of 

 the abdomen. Segments 2-7 fully exposed, the second but little wider than the 

 third. 



i/a6.— New Mexico, Las Cruces, Sept. 9tli (T. D. A. Cockerell). 

 Types.— JJ. S. Nat. Mus., No. 6080 (2 males). 



Evaniella semteoda n. sp. 



(Figs. 11, 16, 35 and 49.) 

 1887. ? Hi/ptia dorsalis Cresson, Cat. Hyni. N. A.,1887, p. 182. 

 1901. Evania unicolor Ashmead, ad partem. Can. Ent., sxxiii, p. 304, nee Say. 



% . 9 . — Black, the thorax, petiole, scape and face sometimes more or less red. 

 Finely pubescent. Face sparingly punctured, edge of the clypeus smooth, 

 acute; antennas inserted close together on a convexity of the face, more than the 

 length of their first two joints from the ocelli ; front above the antennae coarsely, 

 vertex very coarsely punctured ; ocelli large, distant ; cheeks narrow, almost as 

 wide at the apex as at the base of the eyes; eyes large, oval, removed by about 

 one-fourth their length from the mandibles. 



Thorax coarsely and thickly punctured ; punctures smaller on the sides and 

 venter; propodeum reticulate, a polished spot on tlie pleurae; parapsidal grooves 

 wanting; raetanotum not very narrow, in a slight transverse impression. Mid- 

 dle coxse moderately distant, posterior ones approximate; the prongs of the fur- 

 cula i>arallel ; the posterior coxse coarsely punctured ; the longer tibial spur little 

 less than one-half as long as the metatarsus; the latter about as long as the fol- 

 lowing three joints united ; claws small, about two-thirds the length of the 

 fourth tarsal joint, bifid ; the rays about equal, at acute angles, the outer (apical) 

 ray sometimes much less stout than the other (Fig. 49). Wings hyaline, veins 

 K4, Mi + 2, Ml, M2 and m wanting, their position indicated by a faint trace; R;{ 

 obtusely angled. 



In the male the petiole is smooth ; about two-thirds the length of the broadly 

 oval, nearly orbicular, polished abdomen ; segments 2-6 inclusive fully exposed ; 

 the third about two-thirds the width of the second. In the female the slightly 

 pitted petiole is about one-half the length of the nearly orbicular, obliquely 

 truncate, polished abdomen ; segments 2-5 inclusive fully exposed, the second 

 making up about one-third of the exposed area, almost three times as wide as 

 the third segment. 



The color of this species is very variable. It is barely possible 

 that two species may be included, the one of northern distribution 

 and black in color, the other southern and with more red. The 

 color, however, intergrades, and I can find absolutely no structural 

 difference that will separate them. I have in all before me eight 

 specimens, all from the United States National Museum collection. 

 Four specimens are black entirely, except with forelegs testaceous 

 beyond the trochanters, and two of them have some reddish on the 

 dorsum. One specimen is mixed with reddish- brown all over the 

 thorax and legs, and the base of the antennie, and the apex of the 



