NEAEEST EXISTING ALLIES OF TSETSE. 55 



and Beccarimyia, Roud., the nearest allies of the Tsetse-flies 

 have been designated. The genera Stomoxys and H-ccmatohia 

 include several species of small brownish or mottled grey and 

 brown flies, with a prominent though short chitinous proboscis, 

 which are greedy blood-suckers, and plague both men and cattle. 

 Stomoscys calcitrans, Linn., which is the only European species 

 of its genus, though others occur in Africa, is very common in 

 England in August and September, .sitting about in numbers on 

 rails and gates in fields. Hxmatdbia stimulans, Mg., and Lyperosia 

 (Hsematohia) irrifans, Linn., are common summer plagues of cattle 

 in England ; and the latter, known to American writers as 

 Hsematohia serrata, Rob.-Desv., has been introduced into the 

 United States, where, owing to its habit of clustering about the 

 bases of the horns of cattle, it is commonly called the " Horn- 

 fly." Another species of Lyperosia, closely allied to L. irritans, 

 but smaller and with narrower palpi, was found by Mr. W. R. 

 Ogilvie Grant swarming on his camels in the Dimichiro Valley, 

 Sokotra, in January, 1899.* The genus Beccarimyia, founded by 

 Rondani,"!" for the new species B. glossina, from Keren, about 

 seventy miles from Massowah, diflFers from Hcfmatohia and the 

 other genera in having a very prominent epistoma, and the first 

 posterior cell of the wing closed before the margin. 



The genus Glossina is placed by Brauer and von Bergenstamm | 

 in the " Subsectio Stomoxys," of the " Sectio Muscina." § The 

 other genera of which the " Subsectio Stomoxys " is foi-med are : 

 Beccarimyia, Rond., Stomoxys, Geoffr., Hsematohia, Rob.-Desv., 

 and Lyperosia, Rond. ; the latter, which is sometimes regarded 

 as a sub-genus of Hsematohia, was founded j) for Conops (Stomoxys, 

 Hsematohia) irritans, Linn. There is no doubt that this grouping 

 represents the most commonly accepted ideas of the affinities of 

 Glossina. In respect of certain structural details (e.g. the venation 



* Lyperosia ininufa, Bezzi ("Ann. Mus. Civ. Genov.," xxxii. (1892), 

 p. 192), occurs in Somaliland, and two other species are found in Ceylou. 

 One of the latter, which closely resembles L. minuta, Bezzi, but is probably 

 new, has recently been stated to be very troublesome to ponies at the 

 Ceylon breeding station. 



t " Annali del Museo Civico di Storia Naturale di Genova," iv. (1873), 

 p. 287. 



X " Vorarbeiten zu einer Monographie der Muscaria Schizometopa 

 (exclusive Anthomyidse), Pars III." : " Denkschriften der mathematisch- 

 iiaturwissenschaftlichen Classe der Kaiserlichen Akademie der Wissen- 

 schaften," Ix. Band, Wien, 1893, pp. 177-178. 



§ Subsequently termed by Prof. Brauer (" Verhandlungen der k. k. 

 zoologisch-botanischeu Gesellschaft in Wien," Jahrgang 1893, p. 516), the 

 " Sectio ]\IuscA." • • 



II Kondani, " Dipterologias Italicse Prodromus," Vol. I. (1856)-, p. 93. 



