470 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 6 



Since receiving this information I have been able to confirm these 

 statements concerning its altitudinal distribution on the western slope 

 of the Peruvian Andes. At Callao and Lima this insect was very 

 abundant during June and July, 1913 (the beginning of the winter), 

 and at San Bartolome with an alt'tude of somewhat over 4,000 feet 

 it was still common. At Matucana, however, which is about 7,300 

 feet above sea level, I did not observe it. 



Chile. — Cited by Reed^ in his catalogue of Chihan Diptera. 



Argentina. — The stable fly is an extremely common insect in many 

 parts of Argentine and an extremely serious pest of cattle in many 

 parts of that country. Dr. Juan Brethes of Buenos Ayres tells me 

 that it attains at least the parallel of 35° south latitude and may 

 perhaps extend further south, although he has no positive data in 

 regard to this. They appear most abundantly in the fall (March and 

 April) and at times in almost incredible numbers. Such a case 

 has been described by Iches,^ when, in 1908, the Province of Santa 

 Fe was visited by a plague of these insects. In this case their unusual 

 abundance was traced to large amounts of fermenting vegetable debris 

 left after the threshing of wheat and flax. 



Brazil. — Austen^ has found specimens from the lower Amazon 

 region in the collections of the British Museum, and many years 

 ago Desvoidy^ described S. sugillatrix (a synonym of S. calcitrans) 

 from Brazil. 



Great Britain 



Hewitt, who has observed this insect extensively in England speaks ^ 

 of it as being common, especially in the country from July to October, 

 during which time it is frequentlj^ seen in houses. He also found it as 

 early in the season as March and April upon the windows of a country 

 house. 



Newstead has also referred to its abundance in parts of England, 

 particularly in Liverpool and Chester, where he found the adults 

 resting on shop-fronts in the main city streets. 



It is evidently very abundant and generally distributed in England, 

 much as in our own country. 



Europe 



Stomoxys calcitrans was originally described by Linnaeus from 

 Swedish specimens and has since been recorded from practically all 



iCat. Ins. Dipt. Chile. Ann. Univ. Chile, Vol. 73, p. 644 (1888). 



= Bull. Soc. Nat. Acclim. France, Vol. 56, p. 104-11 (1909). 



3 African Blood-sucking Flies, p. 143, London (1909). 



^ Myodaires, p. 386. 



^ Quart. Journ. Micr. Sci., Vol. 54, p. 356 (1909). 



