104 Journal New York Entomological Society. [Vol. xvi. 



forming two low, rounded carinse ; ocellar basin distinct, the lower walls being the 

 branches of the middle carina ; lateral ocelli smaller than the anterior one ; ocelli 

 forming a triangle. Prom each antennal fovea there is a broad furrow running up- 

 ward to about the level of lateral ocelli. Left mandible tridentate, second tooth 

 small, obtuse. Eyes prominent, almost round. Antenna 26-jointed, rather short, 

 third joint as long as four plus five. Thorax above shining, without punctures, pleurae 

 and pectus with a few rather small punctures ; pronotum with a few rather long 

 yellowish hairs. Venation as in Baclroceros depressns (Proc. U. S. Nat. Mus., xxix, 

 Fig. 41), except that the second radial cell is not so acute at apex above. Tarsal 

 claws deeply cleft, inner tooth somewhat shorter than outer ; four hind tibiae with a 

 pair of spurs about one fourth from the apex and a single spur near the middle. Ab- 

 domen polished, venter with some rather short rufous hairs. Color shining black ; 

 clypeus, mandibles except tips, which are piceous, palpi, spot on lower half of cheeks, 

 four small spots across front on an imaginary line drawn across between the eyes 

 about the middle, two elongate spots on vertex back of ocelli, a line from middle of 

 inner orbits to occiput (this line is wider at the occiput), tegulae, small spot on pos- 

 terior angle of pronotum, four anterior legs (the tibise and tarsi are somewhat red- 

 dish) and posterior femora yellow. Abdomen entirely and posterior tibise and tarsi 

 rufous ; coxae and trochanters black. Wings hyaline, with a very faint yellowish 

 tinge ; nervures and stigma black. 



Habitat. — Russell, Costilla Co., Colo., June 25, 1907 (L. 

 Bruner). Type in the entomological collection of the University of 

 Nebraska. Tightly held by the mandibles is the leg of some other 

 insect. 



This species differs from most species of the genus Bactroceros in 

 having the head polished and the front not very strongly margined. 

 In these characters it seems to come near Liolyda but differs from that 

 genus in the intercostal nervure, etc. It seems to be most closely re- 

 lated to pallimacula Nort. and rufocinctus Cress, but maybe separated 

 from these species at once by the almost entirely black thorax and 

 other characters. 



2. Lycaota bruneri, new species. 



Female. — Length 5 mm. Head narrower than thorax ; clypeus slightly emar- 

 ginate ; labrum rounded; mandibles simple; malar space almost wanting; middle 

 fovea very large, shallow ; ocellar basin distinct, walls rounded, middle of lower wall 

 notched. Antenna; as usual for the genus, third joint almost as long as four plus five, 

 last six joints subequal. Transverse radial nervure received in apical fourth of cell ; 

 stigma broad at base tapering to apex ; tarsal claws simple ; sheath broad, of about 

 equal width throughout, truncated. Color black ; apex of mandibles rufous ; labrum 

 piceous ; tegulae, posterior angle of pronotum, two ventral segments of the abdomen, 

 pale brown ; legs clear reddish ; coxae, trochanters, basal third of four anterior femora 

 black ; basal third of tibise pallid ; tarsi infuscated. Wings hyaline, nervures and 

 stigma brown. 



