772 MR. E. A. ELLIOTT ON THE 



up to the present, the only species of this subgenus known 

 from the Australian Region. The large size of the discoiclal 

 cell places it here, but all other known examples come from 

 South America. 



12. PEHLKEi Enderl. 



Hemistephanus pehlkei Enderl. (4), p. 304; Roman (2), pp. 10 

 et 13, ?. 



5 . Frons closely, posteriorly ai-cuately rugose ; space between 

 tubercles transrugose in front, obliquely behind. Vertex strongly 

 arcuate rugose ; occiput in front arcuate rugose, becoming finer 

 and straighter behincl, with a broad, indistinct median impression ; 

 posterior margin of head finely Ijordered. Second flagellar joint 

 normal, third longer than first and second together. Neck 

 rather short, with four transverse carinae : semiannular 

 moderately transrugose, the narrow posterior border smooth, and 

 with lateral very fine oblique striation. Mesonotum anteriorly 

 irregularly punctate rugose, with a median line of confluent 

 punctures, centrally smooth, laterally coarsely punctate. 

 Scutellum polished smooth, laterally coarsely punctate. Meso- 

 pleurae rugose reticulate and difi'usely punctate ; metapleurse 

 similarly, but more coarsely punctate, separated from median 

 segment by an anteriorly obsolete carina. Median segment 

 smooth, with microscopic reticulation and difi^use punctures whicli 

 do not touch the middle or sides ; marginal sulci wanting. 

 Petiole trans-striate, apically more finely, shorter than rest of 

 abdomen. Second segment basally rugose, towards apex longitu- 

 dinally aciculate ; third to fifth basally granulate aciculate ; 

 fourth apically longitudinally aciculate, remainder very finely 

 aciculate. Terebra one-third longer than body, sheaths black, a 

 subapieal white band as broad as the black apex. Hind coxse 

 transrugose ; hind femoi'a smooth, bidentate. 



Black ; head except apices of mandibles and 3 or 4 basal antennal 

 joints ferruginous; hind tarsi gold pubescent beneath. Wings 

 clear hyaline; stigma black, nervures black-brown. 



Length (type) 2O5 mm.; abdomen 14| mm.; petiole 6 mm. 

 terebra 28 mm. ; fore wing 10| mm. (Enderlein). 15-20^ mm. 

 (Roman). 



Habitat: Rio Magdalena, Colombia (Pehlke); Rio Autaz and 

 Curururuzino, Amazon District, Brazil (Roman). 



Roman states that this species is specially distinguished by 

 the extremely fine oblique striation on the semiannular nnd at 

 the lower end of the pleural furrow, also by the divergent longi- 

 tudinal striation on the fourth tergite. The finely bordered 

 posterior margin of the head and the carina between metapleurse 

 and median segment are chax^acteristic, also the whole sculpture 

 of the abdomen. 



