The Bionomics of South African Insects. 541 



Salisbury, Sept. 27, 1901. — The fly wliicli lays eggs in 

 man is very common here, but I have no specimens by 

 me ; I will catch you a series as soon as they appear 

 again. The one I sent you was a male, the female is 

 very much larger. I am much puzzled to understand how 

 the larva obtains an entrance into the skin. It certainly 

 cannot be through the stomach as in the case of some 

 other bots. I fancy the egg or living larva must be laid 

 on the clothing, and the latter being very minute might 

 wander about and eventually enter the skin through a 

 pore without being felt. The position of the bots in many 

 cases renders it impossible for the egg to have been placed 

 under the skin by the mother. 



APPENDIX. 



Description of a new species of Hyperechia, Schin. 

 (Family Asilid^e), from Mashonalancl. By ERNEST 

 E. Austen. 



Hyperechia, Schiner : 



Verhandlungen der kaiserlich-koniglichen zoologisch- 

 botanischen Gesellschaft in Wien, xvi. Band, p. 673 

 (1866). 



Hyperechia marshalU, sp. nov. (PI. XXII, f. 20.) 



(J. Length 28 millim. 



Black, ahdome)i steely ; cheeks, posterior margin of tliorax in front 

 of scutellum, outer side of front tibiae, under side of thorax betiveen 

 bases of legs and in front of front coxae, and outer side of middle 

 femora, except apical fourth, clothed with orange-rufous* hair : fringe 

 on posterior margin of thorax very conspicuous, and more ferruginous f 

 than orange-rufous. 



Front and face clothed with ochraceous hair ; mysfax ochraceous 

 above and black below, with two or three black hairs in the middle 



* Ridgway, " A Nomenclature of Colors " (Boston : Little, Brown 

 and Coy., 1886), PI. IV, 13. 

 t Ridgway, op. cit, PI. IV, 10. 



