EAELY DESCEIPTIVE AUTHORS. 123 



of cattle from being destroyed. This is not a partial 

 emigration ; the inhabitants of all the countries from the 

 mountains of Abyssinia northward, to the confluence of 

 the Nile and Astaboras [Atbara], are once a year obliged 

 to change their abode, and seek protection in the sands of 

 Beja ; nor is there any alternative, or means of avoiding 

 it, though a hostile band was in their way, capable of 

 spoiling them of half their substance. ..." (8vo ed., 

 Vol. IL, pp. 306-307). 



[Bruce considers that this is the fly referred to in the 

 following passage in Isaiah, vii. 18 and 19 : — " And it 

 shall come to pass, in that day, that the Lord shall hiss 

 for the fly that is in the uttermost part of the rivers of 

 Egypt, and for the bee that is in the land of Assyria. 

 And they shall come, and shall rest all of them in the 

 desolate vallies, and in the holes of the rocks, and upon 

 all thorns, and upon all bushes." 



Westwood believes Bruce's "Zimb " to be the Tsetse, 

 " or at least that that insect is a larger species of Glossina, 

 to whose real habits Bruce has added those of a species 

 of (Estrus" (P. Z. S., 1850, p. 262). If Westwood is 

 ri'jht it follows that the range of the Tsetse extends to the 

 Sudan, on the confines of Abyssinia.] 



2. 1830. C. R. W. Wiedemann. 



" AUSSEREUROPAISCHE ZWBIFLIJGELIGB InSEKTEN," 



Zweiter Theil : pp. 253-254, Taf. IX., Figs. 10% 10% 10°. 

 Original description of the genus Glossina, and of Gl. 

 longi^alpis. 



3. 1830. J. B. Robineau-Desvoidy. 



" EssAi SUR les Myodaires " (Memoires prescntcs ^mr 

 divers Savans a V Academie Boyale dcs Sciences de VInstitut 

 de France. Tome Deuxicme), pp. 389-390. 



Original description of the genus Nemorhina, and of 

 N. (Glossina) palpalis. 



4. 1835. J- Macquart. 



" HisTOiRE Naturelle des Insectes. Dipteres-" : 

 Tome Deuxieme, pp. 2-14-245, PL IG, Fig. 8. 



Description of the genus Glossina, and of Gl. longipalpis 

 (apparently the true Gl. longipalpis, Wicd.). The figure 

 is a caricatiK'e. 



