478 [June 



segments each with a rather broad, central, continuous, yellow band 

 slightly narrowed on the anterior middle and somewhat emarginate on 

 each extreme side anteriorly; apical segment pinched at the sides which 

 have a triangular yellow spot at base, above the margins are carinate. 

 the surface being rugulose and pubescent, and forming an elongate 

 channel, obtuse at tip; beneath shining black, with irregular yellow 

 markings at the apex of the second, third and fourth segments. Length 

 62 lines; expanse of wings 9j lines. 



Male. — Resembles the 9 j hut more slender; the sixth joint of the 

 antennae is somewhat produced beneath ; the spot behind the tubercles 

 is wanting, the line on postscutellum is interrupted in the middle ; the 

 spots on the basal segment of abdomen are smaller and less irregular, 

 the sixth segment has a continuous band like that on the fifth, and the 

 apical segment is either entirely black or with two yellowish spots ; 

 beneath, the segments have merely a lateral yellow dot. Length -ii — 5} 

 lines; expanse of wings 7 \ — 8 lines. 



One 9 , two % specimens. This handsome species is respectfully 

 dedicated to my friend and co-laborer, Dr. A. S. Packard, Jr., of Bruns- 

 wick, Maine. 



I. Crabro dilectus, n. sp. 



Black : mandibles, scape of antennae ; interrupted line on prothorax, two 

 spots beneatb tbe wings, postscutellum, legs except base, and bands on abdo- 

 men, white or yellowish-white ; wings fulvo-hyaline. 



Female. — Black, opaque, very closely and minutely punctured, 

 slightly pubescent ; face, cheeks, and clypeus silvery, more obvious on 

 the latter ; mandibles with an exterior broad whitish stripe ; scape of 

 antennas yellow. Thorax : an interrupted line on prothorax, tubercles 

 and a spot immediately behind, a dot on each basal corner of the scu- 

 tellum, and a line on the postscutellum, white or pale yellow; metatho- 

 rax immaculate, the base obliquely and rather indistinctly striated ; 

 tegulae testaceous, with a yellowish spot in front. Wings fulvo-hyaline. 

 darker at tips; nervures honey-yellow. Legs simple, pale yellow ; the 

 coxae, trochanters, and femora except tips, black; tips of tarsi dusky. 

 Abdomen subsessile, elongate, convex, shining ; basal segment with an 

 irregular, whitish spot on each lateral middle; the remaining segments 

 each with a central whitish fascia, slightly interrupted in the middle 

 on the second segment and sometimes on the third, while those on the 

 third and fourth have a slight notch on the extreme sides anteriorly 

 and a shallow emargination on each side posteriorly; all the bands are 

 more or less narrowed in the middle ; apical segment black, immacu- 

 late, subconical, flattened above, rather strongly punctured, with the 



