260 PROCEEDINGS OF THE NATIONAL MUSEUM vol.84 



Male. — Very similar to female in structm'e and color; spots on 

 lower anterior maro:in of pronotum and on middle coxa and apex of 

 genital sheath yellow. 



Host. — Euxoa auxiliaris Grote. 



Type locality. — Derby, Kans, 



Type.— U.S. ^.M. no. 51797. 



Remarks. — One female and two males, including type and allotype, 

 reared March 16-20, 1934; one female from Herington, Kans., reared 

 by H. H. Walkdcn mider Ace. no. 2193.4; one female, Bucklin, Kans., 

 reared March 22, 1935, by H. H. Walkden, under Ace. no. 35189; one 

 female from Wellington, Kans., E. G. Kelly; and two females, Lincoln, 

 Nebr., October 25, 1923, Owen Bryant. 



Two other species of the lasius group, each represented by a single 

 much mutilated specimen, are before me, one from Oregon, minus the 

 abdomen, and one taken from the stomach of a roadrunner at Tucson, 

 Ariz. (Biological Survey no. 188825). 



5. EXETASTES PICTUS. new species 



The group represented by this and the next following species com- 

 prises the smallest species of Exetastes. They are characterized by 

 the small evenly convex clypeus, distinctly defined ver}'^ short petiolar 

 area, short depressed abdomen, very short ovipositor, nearly straight 

 second recurrent vein, yellow ornamentation of the head and thorax, 

 and red abdomen. 



Female. — Length 6.5 mm. 



Head thin, temples very strongly receding, nearly flat, little longer 

 than half of short diameter of eye, polished, wealdy punctate; occiput 

 shallowly concave; frons flat, densely finely punctate, mat; face 

 wealdy elevated medially, densely and more coarsely punctate, mat; 

 clypeus evenly weakly convex, little more than half as broad as face 

 and two-thirds as long as broad, narrowly truncate at apex, finely 

 coriaceous, mat with scattered punctures; cheeks straight in front 

 view, their extended angle sharply acute, posteriorly more densely 

 punctate than temples; malar space a little more than half basal 

 width of mandible, mouth barely as broad as face ; mandibles more than 

 two-thirds as broad as long, strongly narrowing apically; junction of 

 occipital and h.ypostomal carinae removed from base of mandible by 

 about half the width of latter; eyes large and bulging, slightly longer 

 than width of face, faintly convergent below; postocellar line longer 

 than ocellocular line and nearly twice diameter of a lateral ocellus; 

 antennae (broken) slender filiform, first joint of flagellum hardly twice 

 as long as second, the latter a little more than twice as long as thick. 



Thorax robust, short and deep, shining, with moderately coarse 

 and dense punctation, somewdiat coarser and tending to rugulosity on 

 propodeum; notauli absent; scutellum evenly convex, sparsely punc- 



