770 MR. E. A, ELLIOTT ON THE 



Black ; head, base of mandibles, and scape ferruginous. Wings 

 extremely clear hyaline. 



Length 14-15 mm. ; tevebra 19-20 mm. 



Habitat : Massanary, Brazil. Type in Hungarian Nat. Museum, 

 Budapest. 



This species differs from //. vmstneii chiefly in the more 

 arcuate rugose head, shorter and more coarsely sculptui'ed petiole, 

 and more diffusely punctate median segment. From H. collarifer, 

 with which it agrees in size, colour, posterior margin of head, and 

 length of terebra, it may be best known by the rugose- punctate 

 occiput, shorter petiole, deeper sculpture of the semiannular, and 

 by the very clear wings. 



10. MACRURUS Schlett, 



Stephamos macrurus Schlett., p. 128, 5 . 



5 . Frons rather finely arcuate I'ugose ; occiput in front 

 arcuately to transversely rugose. Postei'ior margin of head 

 strongly bordered. Clieeks shorter than scape. Basal flagellar 

 joints normal. Neck of prothorax apically finely transrugose, 

 the remainder, together with the whole semiannular, smooth and 

 shining. Mesonotum sparsely punctate, centrally smooth, with a 

 longitudinal row of broad punctures, laterally finely transrugose. 

 Scutellum polished smooth, diffusely and finely punctate. Meso- 

 pleurse above finely alutaceous and shining, beneath dull, with 

 large and partly confluent punctures ; metapleurse dull, finely 

 and diffusely punctate, separated from median segment by an 

 indistinct and finely rugose sulcus. Median segment with diffuse 

 large punctures, intersjDevsed with finer ones. ' Petiole trans- 

 rugose, basally more coarsely, a little shorter than rest of 

 a,bdomen, which is basally rugose, then shining, with a few dull 

 spots. Terebra twice as long as body, sheaths white-banded 

 before apex. Hind legs with coxa3 shining, finely trans-striate ; 

 femora polished smooth, apically finely sculptured and subopaque, 

 bidentate ; tibiae longer than femora, compressed not quite to 

 middle. 



Black ; head ferruginous, mandibles red, apically brown ; 

 antennae pitch-brown, apically ferruginous ; neck of prothorax 

 brown or rufous ; hind tarsi rufescent. Wings hyaline. 



Length 23-24 mm. 



Habitat : (Surinam. Type in Roj^'al Natural History Museum, 

 Berlin. 



This species may be distinguished from H. niacidipennis 

 Westw. by the sculpture of petiole and hind coxae, longer terebra, 

 and hyaline wings. From H. collarifer Schlett. and limpidi- 

 pennis Schlett., which it resembles in form and colour, it may at 

 once be known by the much less prominent posterior margin of 

 head and by the longer terebra. 



