856 EXPERIMEXT STATION BECORD. 



rare, pigeon infection is also rare. Kasauli pigeons show no flies and are, as 

 far as my experience goes, free from infection. 



" The development of Hsemoproteus can be traced in the fly ; the ookinete, 

 zygote, oocyst, and sporozoite stages have all been demonstrated. Sporozoites 

 have been seen in vast numbers in the salivary glands and streaming down the 

 salivary duct. Both sexes of Lynchia carry the infection. Laboratory bred 

 flies placed on infected birds have shown in due course both zygotes and sporo- 

 zoites of the same type as those of naturally infected flies. Kasauli pigeons 

 for good reasons thought to be uninfected (but not laboratory hatched) have 

 become infected by flies taken off heavily infected Ambala birds (flies after- 

 wards dissected and found infected). The sporogony of Hsemoproteus in this 

 Lynchia is similar to that of Proteosoma and the malaria parasite. It is 

 another instance of the cycle of Ross." 



Fighting the fly peril, C. F. Plowman and W. F. Deabdex {LoMoii: T. 

 Fisher Unwin, Lid., 1915, pp. 127, pis. 7, figs. 4)- — A popular and practical hand- 

 book. 



Report on a mosquito survey at the mouth of the Connecticut River, P. L. 

 BuTTKicK {Connecticut State Sta. Bui. 1S9 {1915), pp. 5-32, pi. i).— This is a 

 detailed report of a survey made with a view to ascertaining the location and 

 character of mosquito breeding places, to determine how they can best be 

 eliminated, and to estimate roughly the probable cost. It is thought that 

 this survey with the accompanying map makes it possible for those interested 

 to decide what work is most necessary, where money can best be spent, and 

 the approximate cost. 



Anopheles as a winter carrier of Plasmodium. — The mosquito as a prophy- 

 lactic indicator, M. B. Mitzmain {Pub. Health Rpis. [U. S.], 30 {1915), No. 29, 

 pp. 2117-2121). — The author reports upon investigations conducted at Scott, 

 Miss., from February 3 to June 1, 1915. 



During the three months from February 9 to May 9, LOCK) Anopheles 

 mosquitoes collected were dissected and examined but no forms suggestive of 

 the malarial Plasmodium were encountered. Two mosquitoes {Anopheles 

 qnadriwnculatus) were found Infected on May 15 and a third on May 26. 

 The findings indicate that " at any time previous to May 15, in the locality 

 investigated, protection from malaria may be secured by treating with quinin 

 all the human carriers so that the insect carriers may not be permitted to 

 carry out their role in completing the cycle. Failing this, prophylactic meas- 

 ures among healthy and other susceptible persons may be instituted any time, 

 from May 15 to June 1, when it is considered the completion of the mosquito 

 cycle in this locality makes preventive measures urgent." 



The duck as a preventive against malaria and yellow fever, S. G. Dixon 

 {.Jovr. Amcr. Med. Aswc, 63 {1914), No. II,, p. i2(?5).— Attention is called to the 

 habit of ducks of focdiiis upon mosquito larva:'. 



Anastrepha serpentina, a new pest of fruits in Brazil, J. S. Tavares {Bro- 

 teria, Ser. Zooh, IS {1915), Xo. 1, pp. 52-5^; ah.9. in Rev. Appl. Ent., 3 {191S), 

 Scr. A, yo. 7, p. SS7). — In addition to the fruit flies A. fraterculu.9. Cerntitis 

 capitata, and Lonchoca ccnca which occur in Brazil, .1. serpentina, which attacks 

 the sapodilla {Sapota aehra-t), has been discovered. About 30 days are re- 

 quired for its larval development and 15 for the pupal. 



The biopathological relations of the Mediterranean fruit fly (Ceratitis cap- 

 itata) and citrus fruits, L. Savastano {Ann. B. Staz. Sper. Agrum. c Fruttirol. 

 Aeirealc, 2 {1914), pp. 97-128; abs. in Rev. Appl. Ent., 2 {1914), Ser. A. Xo. 10. 

 pp. 6O4. 605). — The attack of the Mediterranean fruit fly is aggravated by an 

 increase in the sugar content of citrus with the resulting decrease in acidity. 



A bibliography of 47 titles is given. 



