NORTH AMERICAN HYMENOPTERA. 189 



transversely striated, tlie sides of middle segment finely striated, sometimes 

 smooth ; abdomen slightly shorter than head and thorax united ; pygidium with 

 large, scattered punctures. Black; mandi))les except apex, scape in front, pro- 

 notum above, tubercles, tips of anterior femora, fore and medial tibiae, except 

 within, base of hind pair, fore tarsi except apical joints,- and tirst joint of hind 

 tarsi at base, yellow ; face, cheeks and sides of thorax with silvery pubescence. 

 Length between 4 and 5 mm. 



Brunswick, Maine (Packard) in August; Massachusetts; District 

 of Columbia ( Asliinead ) ; Michigan. In the specimen before me 

 from Massacluisetts, which I l)elieve was identified by Packard, al- 

 though evidently not one of the types, the pronotum is angular at 

 the sides. In the original description the j^ronotum is said to be 

 " not angulated at the sides." While I believe the specimens before 

 me to be minimus, yet they maybe distinct. I have not seen the %■, 

 which seems to be much like the 9 , except that the fore femora are 

 said to be yellow beneath. 



72. C-rabro propinqiius n. sp. 



9 . — Anterior margin of clypeus slightly dentate laterally, with a median 

 prominence ; head finely punctured, the front most distinctly so ; space between 

 liind ocelli slightly less than that between them and the nearest eye-margin ; a 

 faintly impressed line extends from the fore ocellus to the occiput ; tirst joint of 

 flagellum more than one-quarter longer than the second ; pronotum well crested, 

 angular at the sides; dorsulum punctured like the front, except that the punc- 

 tures are not so close; uiesopjeurae a little more distinctly punctured than the 

 dorsului;)!, its episternal suture obtusely angular in about the middle ; all im- 

 pressed lines of middle segment foveolate, except the large, central channel on 

 posterior face, the two convex sui-faces within the enclosure are microscopically 

 striated, these striae are so fine as to be dilficult to see, except when the insect is 

 held in certain positions, and are oblique, posterior face with fine though distinct, 

 transverse striations, the lateral ridges distinct ; abdomen shorter than head and 

 thorax ; pygidium fiat, with large, separated, though not sparse, punctures. 

 Black ; mandibles except apex, scape beneath, pronotum, tubercles, tips of fore 

 femora, fore and medial tibiae, except a line within, hind tibiae at base, and tarsi 

 except apical joints, yellow; wings hyaline, iridescent, nervures and stigma 

 black ; clypeus, inner orbits beneath, cheeks, and sides of thorax more sparsely, 

 with silvery pubescence ; abdomen with a sparse, silvery sericeous pile. Length 

 5 mm. 



Texas (Birkman). It is .somewhat larger than minimus, although 

 closely related. 



73. Crabro luaculiclypeus n. sp. 



9. — Anterior margin of clypeus subtruncate, not dentate; head finely punc- 

 tured, as usual the punctation of front most distinct : first joint of flagellum about 

 one-quarter longer than the second ; pronotum well crested, more so than in lenius. 

 but less than in scuteUatas, the lateral angles obtuse ; dorsulum apparently more 

 finely and less closely punctured than the front; episternal furrow of mesopleurae 



TEANS. AM. ENT. SOC. XXII. JUNE. 1895. 



