THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY 



[SIXTH SERIES.] 



Xo. 89. MAY 1895. 



XLV. — On the Specimens of the Genus Cutiterebra and its 

 Allies {Family CEstrida?) in the Collection of the British 

 Museum, with Descriptions of a new Genus and Three new 

 Species. By E. E. AuSTEN, Zoological Department, 

 British Museum. 



[Plate XIII.] 



The genus Cutiterebra* was founded by Bracy Clark in the 

 year 1815 (Clark, ' An Essay on the Bots of Horses and other 

 Animals,' London, 1815, p. 70) for a group of CEstrida? which i.s 

 confined to the Nearctic and Neotropical Regions, where the 

 larvae are parasitic in the subcutaneous tissues of Rodents and 

 Marsupials. The flies themselves, which are characterized 

 by a large stout body, feathered arista, brown wings, and broad 

 flat tarsi, include some of tiie largest of all Diptera, but are 

 by no means frequently found in collections, although the 

 larvae of certain species must be exceedingly common in the 

 districts in whicli they occur. Since the publication of 

 Prof. Brauer's epoch-making work on the G^stridaj (' Mono- 

 graphic der Oestriden,' Wien, 1863), more than thirty years 

 ago, which includes seventeen species of Cutiterebra^ two of 

 which are apparently synonyms, only one additional species 

 of the genus (C. approximata. Walk.) has been described. 

 The present revision proves that the British Museum possesses 

 specimens of nine species of Cutiterebra, two of which are new. 

 In 1887 the " division " (Abtheilung) Cuteuebrid^ (Brauer, 



• Clark wrote Cuterebra: the obviously correct forrn(|jiveu bvScudder 

 (' Supplfiueutal List of Genera,' p. 9^), ou the suggestiou of Verrall, is 

 here adopted. 



Ann. cfc Mag. A'. Ih'st. iSer. G. Vol. xv. 27 



