NORTH AMERICAN HYMENOPTERA. 24^^ 



long, rounded or somewhat pointed at tip, and exceeding the tip of the third 

 submarginal cell ; three distinct subinarginal cells, the first nearly as long as the 

 marginal ; the second broad beneath, much narrowed towards the marginal and 

 receiving the first recurrent nervure about the middle ; the third submarginal 

 distinctly defined, short, pointed at tip and much narrowed beneath and receiv- 

 ing the second recurrent nervure ; legs black, or piceous black, the femora be- 

 neath fringed with long grayish pubescence, the tibige and tarsi with blackish 

 pubescence ; abdomen ovate, black, closely punctured, the large basal segment 

 shining, clothed with a very thin, black pubescence ; apical margins of all the 

 segments, both above and beneath, fringed with long golden pubescence Length 

 9 mm. ; expanse of wings 16 mm. (Cressou.) 



Hab. — Colorado. 



A very distinct species, easily recognized by the red thorax, with 

 its golden pubescence, as well as of the apical margins of the ab- 

 dominal segments. It is closely allied to S. Julvohirta, but quite dis- 

 tinct by the coloration of the thorax and by the different shape of 

 the marginal and submarginal cells of the anterior wings. 



Sphseroplitlialiiia oeeola Blake. 



Male. — Black ; head rounded, narrower than the thorax, densely and finely 

 l)unctured, thinly clothed with black pubescence; antennte black; eyes round 

 and prominent ; thorax robust, subquadrate, narrowed posteriori}-, densely and 

 finely punctured, clothed with scattered black hairs ; metathorax rounded, 

 coarsely reticulated ; tegulse ovate, very finely reticulated ; wings fuliginous, 

 marginal cell elongate ovate, rounded at tip, first submarginal nearly as large 

 as the marginal, narrowed towards the base, second subtriangular, its basal ner- 

 vure sinuate, and receiving the first recurrent at the middle, third narrowed 

 beneath, indistinctly defined; legs black, the intermediate and posterior tibiae 

 and tarsi clothed with pale brownish pubescence, calcaria pale; abdomen ovate, 

 basal segment black, shining, punctured, bearing a few black hairs, second seg- 

 ment ferruginous, shining, finely and remotely punctured, interspersed with 

 short ferruginous hairs, its apical margin and following segments black, densely 

 clothed with black pubescence ; under side of second segment darker than above. 

 Length 11 mm. ; expanse of wings 17 mm. 



Hab. — Florida, Southern States. Collection of Mr. Norton. 

 This may prove to be the male of S. dubitata, Smith. 



Siphseroplitlialnia ^auboriiii Blake. 



Male. — Head black, rounded, closely punctured, thinly clothed with erect black 

 hairs ; eyes round, conve.x, polished ; antennse black ; thorax elongate subquad- 

 rate, rounded in front, closely punctured, spar.sely clothed with black hairs, 

 metathorax roundly truncate, coarsely reticulate ; tegulse convex, very finely 

 punctured ; wings pale fuliginous, slightly paler towards base, marginal cell 

 ovate lanceolate, rounded at tip ; first submarginal large, narrow ; second subtri- 

 angular, receiving the first recurrent at middle, its basal nervure sinuate, third 

 pentagonal, with abbreviated nervures from its exterior angles ; legs black, thinly 

 clothed with black and white hairs, femora minutely punctured, calcaria white; 

 abdomen ferruginous, basal segment campanulate, closely jiunctured, punctures 



