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V Notes on the Thynnidse, with remarks on some aberrant 

 genera of the Scoliidse. By Rowland E. Turner. 



I HAVE recently dealt with the Thynnidse of Australia, 

 and now offer some remarks on those of South America, 

 together with descriptions of a few new species and some 

 notes on the Scoliid genera Iswara and Anthohosca, which 

 are in my opinion most nearly related to Myzine. I can- 

 not at present undertake a full revision of the Thynnida3 

 of South America owing to the want of sufficient material, 

 and also to the impossibility of identifying the majority of 

 Klug's species without a full examination of the types. 



The females, except in the genus Jlillurus, King, have 

 the palpi fully developed as to the number of joints, that 

 is, maxillary palpi six- and labial palpi four-jointed, differ- 

 ing markedly in this particular from the bulk of the 

 Australian Thynnidse. The clypeus in the male is usually 

 emarginate, sometimes very broadly as in typical Maphro- 

 ptera, sometimes narrowly and deeply as in typical Scotxna. 

 The name ElaiJhroptera given by Guerin (1889) has usually 

 been used for the bulk of the South American species, 

 though the name Scotmna given by Klug (1810) has priority, 

 and should have been retained if the species were regarded 

 as forming one genus only. Ashmead has recently (" Cana- 

 dian Entomologist," 1903) attempted a detailed classifica- 

 tion, but being based on the differences in the hypopygium 

 it must be considered as almost valueless ; such differences, 

 though of importance as specific distinctions, being of little 

 or no value for broader classification, and not usually 

 running on parallel lines with the characters of the females. 



In all the males which I have been able to examine the 

 labrum, though varying much in shape, is produced from 

 below near the apex so as to form a more or less trans- 

 verse trough at the apex ; a peculiarity which does not, 

 as far as I know, occur in any Australian species. The 

 mandibles of the males vary much in form, and will pro- 

 bably prove to be one of the most useful characters for 

 classification. They are usually bidentate, sometimes 

 simply curved ; but in many cases, as in typical Elaphro- 

 ptera, strongly elbowed. In the genus Teleyhoromyia the 



TRANS. ENT. SOC. LOND. 1908. — PART I. (MAY) 



