AMERICAN HYMENOPTERA. 119 



iorly, spots on the dorsal abdominal segments 1-5, those on the fifth 

 segment connected, and the ones on the fourth nearly so, white; 

 squamas and spine white-hyaline. Face with silvery pubescence. 

 Wings hyaline, somewhat milky; venation pale brown. 



Habitat.— Denver, Colorado, August 8, 1908 (Mrs. C. Ben- 

 nett), at flowers of Peritoma serrulatum. 



A very distinct species, not closely related to any one 

 described from North America. The spine is intermediate 

 between Notoglossa and Oxybelus, but the mandibles have a 

 tooth within, so it should be placed in Oxybelus. 



Notoglossa pacifica n. sp. 



Male. — Length 5 mm. Anterior margin of the clypeus with about 

 six small, obtuse, indistinct teeth; medial carina almost wanting. 

 Facial quadangle narrow, slightly broader below. Head finely closely 

 punctured, appearing somewhat granular; punctures of the cheeks 

 elongate. Ocelli in a low triangle, the distance between the lateral 

 ocelli about twice as great as the distance between one of them and the 

 nearest eye margin. Antennas short, robust, joints not well defined. 

 Pronotum narrow, not strongly ridged or sharply angled. Dorsulum 

 closely, rather finely punctured; mesopleurae similarly, but not so 

 closely punctured, suture fairly distinct. Scutellum with larger 

 punctures and somewhat more coarsely punctured than the dorsulum; 

 with a middle carina posteriorly which extends on the postscutellum; 

 postscutellum closely punctured. Squamae very broad, with three 

 teeth at the apex, the middle one the longest and the most slender, 

 the outer one broader and slightly curved. Spine broad, a little wider 

 at the apex, deeply emarginate, the lobes broad, rounded at the apex. 

 Metanotum at the sides obliquely striated, beneath the spine smooth; 

 metapleurae with transverse strise which are somewhat curved; pos- 

 terior face with transverse strise, fovea triangular, shining, lateral 

 carinas fairly strong. Legs robust, rather strongly spined. Trans- 

 verse median and basal nervures interstitial. First abdominal seg- 

 ment impressed medially; abdomen dorsally with distinct rather close 

 punctures; ventrally more shining and with more widely separated 

 punctures; segments four, five and six with curved lateral spines. 

 Lobes of the emargination of the eight ventral plate narrow and acute. 

 Color black; palpi, tegulas and spine at sides brownish; mandibles 

 except apices which are piceous, tubercles, knees and legs below except 

 a spot within, and narrow lines on abdominal segments 1-5 lemon- 

 yellow. Face, sides of thorax, legs and apical margins of the abdominal 

 segments with silvery pile; dorsulum with short gray hair. Wings 

 hyaline, iridescent; venation dark brown. Squamag white-hyaline. 

 Antennae towards the apex reddish. 



TRANS. AM. ENT. SOC, XXXV. MARCH, 1909. 



