June, '08] ENTOMOLOGICAL NEWS. 249 



Habitat Eight $ $ Florissant, Colo., July 7, 1907, 8000 

 ft., fls. Heradcum lanatmn, (S. A. Rohwer). 



In Fox's table (Crabroninse of Boreal North America) this 

 species runs to between htiaris Sm. and cognatus Fox., but is 

 neither of these and not any of the species of the hilaris group, 

 being easily separated by having the antennae entirely without 

 hair and other characters. Easily separated from C. snoivii 

 Fox which falls in the same place by the naked antennae. Fol- 

 lowing Dr. Ashmead's arrangement (Can. Ent.) this species 

 would probably form a new genus near Paranthyreus Kohl 

 being separated from it by the absence of a spur on the middle 

 tibiae. 



Crabro (Protothyreopus Ashm.) niegacephalus n. sp. 



$. Length about 13 mm.; width of head 3 mm.; width of thorax 

 2^2 mm,; length of anterior wing 9 mm. Head wider than thorax, 

 large; clpsely, evenly and rather finely punctured throughout; line 

 from lower ocellus rather faint ; ocelli in a low triangle, the distance 

 between the two hind ocelli slightly less than the distance between 

 them and the nearest eye margin ; clypeus rounded anteriorly, middle 

 carina not strong, without lateral teeth ; distance between the eyes 

 at the clypeus about the same as the width of the clypeus in the 

 middle; first joint of flagellum about as long as 2 and 3, flagellum 

 somewhat clavate, covered with microscopic pile ; pronotum strongly 

 ridged anteriorly, dentate laterally, the anterior face longitudinally 

 striated ; dorsulum and scutellum densely and finely punctured, al- 

 most matted ; tegulse with some very fine punctures ; meso-pleurae dis- 

 tinctly, transversely striate above, striato-punctate below, meso-pectus 

 punctured; dorsulum of metathorax obliquely striate from middle; 

 posterior face and side very finely transversely striated; middle fur- 

 row of metathorax not strong; slightly foveolate on posterior face; 

 first recurrent received near apex of first cubital ; femora robust, 

 somewhat triangular (more especially the fore femora) ; anterior 

 tarsi slightly flattened; middle and posterior tibiae serrated on outer 

 margin ; abdomen above finely, densely punctured ; ventral segments 

 without large punctures, but with a number of small ones; pygidimn 

 broad, triangular, with large elongate punctures; sides of pygidium 

 with a more or less distinct fringe of white hairs. Color black; 

 mandibles except apex, scape entirely, two spots of pronotum, tu- 

 bercles, spot below tegulae, two small lateral spots before the 

 scutellum, postscutellum, apex of femora and legs below (middle and 

 posterior femora have the yellow extending inward), two large spots 

 on dorsal abdominal segments one and two, and a wide band on 



