1865.] 93 



with a deep elongate fovea on the disk ; tegul.ie lemon-yellow. "Wings 

 subhyaline. the apical half stained with yellowish-fuscous ; nervures 

 and stigma fulvous. Legs slender, shining black ; apical half of the 

 anterior femora, tips of the four posterior femora, and all the tibiae and 

 tarsi, bright lemon-yellow ; tips of the tarsi slightly dusky. Abdomen 

 ovate, highly polished, impunctured, except at tip ; first and second 

 segments rather deeply incised at tip, the former convex and rounded 

 in front, with an oblique, ovate, lemon-yellow spot on each side towards 

 the tip ; second segment with a broad, basal lemon-yellow band, a little 

 obliriue on the sides, and slightly interrupted in the middle; third, 

 fourth and fifth segments each with a narrow, apical, lemon-yellow 

 fascia, slightly wavy on the sides ; sixth and apical segments very mi- 

 nutely punctured and pubescent, the former with a transverse yellowish 

 spot on the middle and another on each side; apical segment immacu- 

 late, subtruncate at tip ; venter polished, black, the apical middle of 

 the second and following segments obscurely brownish, with a yellow 

 dot on each extreme side. Length 4i lines ; expanse of wings 7? lines. 



Hah. — Rocky Mountains, Colorado Territory. (Ridings.) Coll. 

 Ent. Soc. Philad. 



One % specimen ; 9 unknown. A lovely species, remarkable for the 

 smooth, polished, impunctured body, and the bright lemon-yellow 

 markings. 



7. Philanthus pulchellus, n. sp. 



Black : face, spot above antennae, collar, tubercles, tegulce, scutellums, tibire 

 and tarsi, and emarginated bands on abdomen, pale yellow: wings hyaline. 



Mak. — Black, shining, finely and sparsely punctured, slightly pube- 

 scent; head transveisely ovate; sides of the face, much narrowed on 

 each side of the insertion of the antennae, clypeus, spot between an- 

 tennfB, a rounded, triangular, or rhomboidal spot on the front just above 

 the antenna), a spot on base of mandibles, and a dot behind the eyes, 

 more or less pale yellow, sometimes almost white ; antennae black, 

 slightly thickened towards the apex, the second, third, fourth and 

 sometimes the fifth joints of the flagellum are yellow in front and the 

 apical joints have each a testaceous spot or stain ; in some specimens 

 the spot between the antennae and the larger one above, are more or 

 less confluent, and the spot behind the eyes is enlarged ; sometimes 

 the tip only of the second, and the third joint of the flagellum are yel- 

 lowish. Thorax sparsely punctured; mesothorax with a deep central 

 channel ; a band on the prothorax, slightly interrupted in the middle, 

 the tubercles and a spot behind, a little lower down, a transverse spot 

 on the scutellum, sometimes interrupted in the middle, and forming two 



