168 



Howard (C. W.). A Fly Control Exhibit.— J?. Econ. Entom., Concord, 

 N.H., X, no. 4, August 1917, pp. 411-412, 1 plate. 



This paper describes an exhibit labelled " The Flyless Farm." The 

 model has been constructed to show how the various farm buildings, 

 stables, out-houses, etc., can be made absolutely fly-proof. The 

 exhibit has proved exceedingly popular and it is considered that more 

 practical information is disseminated among the pubhc in this way 

 than by any number of leaflets. It is hoped to exhibit this model at 

 a number of State Fairs. 



Lamson, Junr. (G. H.). The Life-histories of the Cattle Lice.— J^. Econ, 

 Entom., Concord, N.H., x, no. 4, August 1917, pp. 446-447. 



Haematopimis eurysternus (short-nosed cattle louse) was found to 

 hatch in 7 to 8 days from eggs placed on the shoulder of a young calf, 

 the complete life-cycle occupying 22 to 24 days. Linognatlms (H.) 

 vihdi, L. (long-nosed cattle louse) has a similar life-history, eggs 

 hatching in 8 to 9 days, and the whole cycle occupying 25 to 27 days. 

 Trichodectes scalaris, Nitzsch (little red biting louse) is less easy 

 to study owing to the difficulty of keeping it confined. Apparently 

 the eggs hatch in 5 or 6 days and the lice mature in two weeks, indicating 

 that a treatment might successfully be made 10 days or 2 weeks after 

 the first, but further investigations are necessary. 



Dios (R.). Sistemdtiea y Biologia de los Ixodfdeos Argentinos: 

 Contribuci6n d su Estudio. [Biology and Systematic Description 

 of Argentine Ixodidae : Contribution to their Study.] — Andes Soc. 

 Rural Argentina, Buenos Aires, Vi, no. 3, May 1917, pp. 249-251, 

 2 figs. [Received 12th September 1917.] 



This paper contains a description of both sexes of a new tick, 

 Amhlyomma altiplanum, sp. n., which has been found upon llamas 

 inhabiting the Argentine-Bolivian arid plateaux at from 4,500 to 

 12,000 feet. These examples were taken in April and were never 

 found on any other host, while attempts to rear them on goats, sheep 

 and other animals were unsuccessful. Though females were kept 

 alive in the laboratory for more than three months, no case of 

 oviposition was observed. 



Mendoza (P. de la C). La Garrapata en el Paraguay. [The Tick 

 in Paraguay.]— ^?ia^e5 Soc. Rural Argentina, Buenos Aires, li, 

 no. 3, May 1917, pp. 251-253. [Received 12th September 1917.] 



Ticks are a serious pest of cattle in certain regions of Paraguay. 

 The most important species found in Argentina and Brazil is 

 Margaropus annulahis, var. microjilus. Can. The species concerned in 

 Paraguay is probably the same and a study of this tick as a transmitter 

 of disease is greatly needed in order to determine whether the methods 

 of control employed in other countries would be efficacious in Paraguay. 

 The part played by the tick in the transmission of Piroplasma 

 higeminum in Paraguay has long been a matter of dispute among 

 stock-breeders. It was previously believed that the tick was not 

 associated with disease owing to many animals being heavily infested 



