NORTH AMERICAN HYMENOPTERA. 209 



This handsome species is allied to auripilis Blake, from which it 

 differs by the less coarse punctuation, and by the more dense, uniform 



golden pubescence. 



Subdivision II. 

 Head subtransverse or subquadrate, not remarkably enlarged 

 behind the eyes, neuration generally as represented by figure 14. 



Fig. 14. 



S p li £erop lit h alma orcus Cresson. 



Male. — Elongate ; colored similar to the female, but much less coarsely punc- 

 tured, aud the antennae much longer ; the nietathorax is large and rounded be- 

 hind, covered with dense, rather coarse punctures, and clothed rather sparsely 

 with long, black pubescence ; wings ample, blackish, paler at tips ; marginal cell 

 short, not exceeding the tip of the third submarginal cell, the apex broadly 

 truncate; the three submarginal cells distinctly defined, the first longer and the 

 second as long as the marginal and receiving the first recurrent nervure before 

 the middle ; the third submarginal cell subtriangular, much narrowed beneath, 

 so that the side nervures become almost confluent with the second recurrent 

 nervure ; legs black, punctured, clothed with black pubescence ; abdomen ovate, 

 gradually narrowed to tip. closely and rather finely punctured ; apical margin of 

 the large basal segment and all the remaining segments, as well as the lateral 

 apical fringe of the ventral segments, densely clothed with long rufo-ferruginous 

 pubescence, the remainder with black pubescence, sparse on the venter, which is 

 shining ; the node rather larger than in tbe female, coarsely punctured, with a 

 large, flattened, subacute tooth beneath ; second ventral segment somewhat con- 

 cave on the middle, on which there is a deep ovate puncture. Length 35 mm. ; 

 expanse of wings 36 mm. 



Female.— Deep black, with coarse black pubescence and large, deep punctures : 

 head not wider than the thorax ; eyes small, round, entire, very convex and 

 polished ; antenna? piceous black at base, the flagellum brownish and sericeous ; 

 thorax slightly narrowed behind and abruptly truncate ; the excavations on the 

 sides, for the reception of the legs, are smooth and shining, the posterior trunca- 

 tion less coarsely punctured and somewhat shining ; legs black, with long, black 

 pubescence ; the tibia? with short, black spines ; abdomen large, ovate, coarsely 

 punctured, black ; most of the large basal segment and all the remaining seg- 

 ments above clothed with a long, dense, rufo-ferruginous pubescence ; the node 

 and the base and sides of the large basal segment, as well as the venter, clothed 

 with black pubescence ; the large ventral segment is sparsely pubescent and 

 shining ; in one specimen the lateral apical fringe of the ventral segments is 

 reddish ; the node or small basal segment is rather small, circular at the tip, nar- 

 rowed towards the base and depressed above, with a short, stout tubercle on each 

 side at extreme base. Length 19-20 mm. (Cresson.) 

 Hab. — Texas. 



Easily recognized by the large size, the jet-black color, with most 

 of the abdomen above rufo-ferruginous. 



TRANS. AMER. ENT. SOC. XIII. (27) AUGUST, 1886. 



