1865.] 47!» 



lateral margins carinate, the apex obtuse, and the sides scarcely pinched 

 in; venter black, immaculate. Length 5? lines; expanse of wings 9 lines. 



Male. — Very similar to the female ; the fourth, fifth and sixth joints 

 of the antennae beneath are uneven ; the femora have much more yel- 

 low at tips, and all the bands of the abdomen are continuous, except 

 that on the first segment, which is more or less interrupted. Length 

 5 lines; expanse of wings 6 lines. 



Two 9 , three S specimens. This pretty species is closely allied to 

 the preceding, the % of which has much similarity in its shape and 

 markings with the 9 of the present species, so much so that I hesitated 

 long in separating them. 



5. Crabro vicinus, n. sp. 



Black; elypeus, spot on mandibles, scape of antennae, collar, tubercles, scu- 

 tellura, tibiae and tarsi, and bands on abdomen, yellow: wings yellowish - 

 fuscous. 



Female. — Black, slightly shining, sparsely pubescent; head minutely 

 punctured ; the elypeus, a stripe on the mandibles, and scape of an- 

 tennae yellow, the former silvery. Thorax closely and strongly punc- 

 tured, especially above ; a transverse line on the collar, very slightly 

 interrupted in the middle, tubercles, and a broad transverse spot on 

 the scntellum, yellow; metathorax immaculate, rugulose, longitudinally 

 striated at base, with a deep central channel ; tegulae with a white spot 

 before. Wings strongly tinged with fulvo-fuscous, paler at base and 

 darker at tips; nervures fulvo-fuscous. Legs simple, black; tips of 

 the four anterior femora, and all the tibiae and tarsi, except a spot on 

 the tibiae beneath, yellow ; tips of tarsi dusky. Abdomen subsessile. 

 elongate-ovate, convex, shining ; each segment with a rather broad, 

 central yellow fascia, those on the first three segments slightly inter- 

 rupted in the middle, except in one specimen where they are entire, with 

 the anterior and posterior margins crenulated ; apical segment conical, 

 entirely black, with elongate punctures and raised sides, the apex ob- 

 tuse; beneath, the second segment has a more or less large, lateral, 

 irregular yellowish mark, and the following segment a lateral dot. 

 Length 4* — 5 lines; expanse of wings 7 — 7'> lines. 



Three specimens. Seems to be closely allied to C. advena Smith, 

 from Nova Scotia, but the metathorax is not " very coarsely rugose." 



0. Crabro succinctus, n. sp. 



Black: elypeus, spot on mandibles, scape of antennas, tibiae and tarsi, and in- 

 terrupted fasciae on abdomen, yellow; wings subhyaline. 



Female. — Black, opaque, minutely punctured, slightly pubescent; 

 elypeus, a line at base of mandibles, scape of antennae, except a spot 



