with remarks on some aberrant genera of the Scoliidse. 73 



beneath pale yellow ; legs ferruginous. Wings hyaline, nervures 

 ferruginous. The second recurrent nervure is interstitial with 

 the second transverse cubital nervure. 

 Length 15 mm. 



IfaJ), Mendoza, Argentina. (Purchased from II. 

 Rolle.) 



In colour and size this species resembles Tele'phoroniyia 

 rufipes, Guer., which occurs in the same locality. It is not 

 very near typical Pseudela2)hro])tera, and I place it in the 

 genus with doubt. 



Pseudelaphroptcra flavomaculata, Andre. 



Zeitsch. Hym. Dipt., vi, p. 311, 1904. 



A male of this species in the Oxford University Museum 

 has the third transverse cubital nervure very short and 

 connected with the summit of an arched nervure which 

 originates on the cubital nervure at the junction of the 

 second recurrent nervure, and rejoins the cubital nervure 

 far beyond the iisual termination of the third cubital cell. 

 The extra cell thus formed is slightly longer on the cubital 

 nervure on the left wing than on the right. There is 

 another normal specimen in the same collection; both 

 specimens being from Concepcion. 



The females of some species of this genus have the 

 anterior ocellus present, though small and situated at the 

 bottom of a deep puncture ; this is the case in P. chilensis, 

 Sauss. In Diamina, Westw., the female has all three ocelli 

 developed, but in other Thynuidse they are always absent. 



Elaphroptera avida, n. sp. 



(J. Mandibles bidentate, broadened towards the apex, the inner 

 tooth short, the outer one long and bent inwards. Maxillary palpi 

 six-jointed, the first joint very short, joints 3-5 broadened to the 

 apex and obliquely truncate. Labial palpi stout, four-jointed, the 

 first joint a little longer than the others, the apical joint elongate 

 ovate. Labrum short and broad, with a high transverse carina 

 broadly and deeply emarginate and strongly ciliated at the sides, the 

 area in front of the carina to the apex depressed, membranous and 

 broadly emarginate at the apex. Clypeus punctured, with a large, 

 smooth, semicircular depression in the middle, broadly emarginate at 

 the apex with the angles pointed. Antennas as long as the thorax 



