Mr. K. I'j. 'riuner on Fossorial Ilymenoptera. G05 



fHKiiiitcd with more important papers published earlier in 

 I'JIO. As a result several of his names must sink as 

 synonyms. He places all the American Thynnidtc in the 

 {^enns Elapftruptera, considering that the material availal)le 

 is insutlicient for division into small genera. This division 

 lias already been attempted, and as the genera founded by 

 Guerin were based on careful dissections and arc confirmed 

 by diflerenecs in the more recently discovered females, I 

 think they should have been allowed to stand. But 

 !M. Brethes makes no attempt to group the species according 

 to their natural alHuitics, and only once makes a note of 

 comi)arison ; his key to the males is based almost entirely 

 on colour, and the descriptions are arranged somewhat after 

 the order in which the species fall in the key to the males. 

 Now the utter unreliability of colour-characters in this 

 family has been shown by M. Andre in his valuable paper 

 on the Thynnidie of Coneepcion, which is not referred to by 

 ]\I, Brt'thes. The descriptions are fortunately fairly com- 

 plete, except where neuration is of importance, though there 

 is much ditfieulty in giving a correct idea of the shape of the 

 male elypeus in few words and without the help of plates. 



The following synonymy may, 1 think, be regarded as 

 certain ; probably more will be added later. 



Scotana pollstoides, Turn. 



Scotcena jwlistoides, Turn. Zool. Jahrb. xxix. 2, p, 182 (1910). 

 Elophroptera diodoii, BriSthes, Au. Mus. Nac. Buenos Au'es, xx. p. 221 

 (1910). 



Spilothynnus bituberculatus, Turn. 



Telephoromyia bitiiherculata, Turn. Trans. Eut. Soc. London, p. 70 



(1908). $. 

 Spilothynnus hituberculata, Turn. Ann. & Mag. Nat. Hist. (8) iii. p. 132 



(1909). J. 

 Elaphroptera mendozanu, Brethes, An. Mus. Nac. Buenos Aires, xx. 



p. 237(1910). d$. 



Spilothynnus (?) stygius^ Turn. 



SpiJuthynnus styyius, Tm-n. Zool. Jahrb. xxix. 2, p. 190 (1910). cJ. 

 Elaphroptera melanosoma, Brethes, An. Mus. Nac, Buenos Aires, xx. 

 p. 235 (1910). 6 $ ■ 



Ammodromus ingenuus, Sm. 



Thynnus inyenuus, Sm. Descr. n. sp. Hymen, p. 173 (1879) (nee 



Brethes).* 

 Elaphroptera fascialella, Brethes, An. Mus. Nac. Bueuos Aires, xx. 



p. 232 (1910). 



