204 



pools, and were often found in temporary roadside puddles. In view 

 of the practical disappearance of malaria simultaneously with the 

 reduced incidence of A . quadrimaculatiis, it is obvious that A . puncii- 

 pennis must be a poor host for the development of the malarial 

 organism in the region in question. 



A. walkeri, Theo., is widely distributed in Eastern North America, 

 but there were no previous records of it from New York State. Indi- 

 viduals were taken while biting on 3rd July and again on 5th August 

 1921. Wyeomyia sniithi, Coq., is a well-known inhabitant of the 

 pitcher plant (Sarracenia purpurea) and is found in numbers on the 

 sphagnum bogs of New York State from June to August, larvae only 

 being found in plants containing an abundance of fluid uncontaminated 

 by decaying insects. 



Miller (D.). Sheep Maggot-!lies. Observations in the Past Season. 



— N.Z. Jl. Agric, Wellington, xxiv, no. 6, 20th June 1922, 

 pp. 335-336, 2 figs. 



The most active blow-flies attacking sheep in New Zealand are 

 Pollenia stygia and Lucilia sericata. Some doubt had existed as to the 

 occurrence of Chrysomyia [Pycnosoma) rufifacies \R.A.E., B, ix, 168], 

 but recently two adults have been bred, and larvae of Ophyra analis 

 were associated in large numbers with them. That the former fly is 

 now attacking sheep is important, as its depredations in Australia 

 are more serious than those of Pollenia stygia. The spinose maggots 

 of Fannia canicidaris and Pyrellia antennatis were also found in wool 

 infested by P. stygia. These two species and 0. analis are apparently 

 secondary parasites. 



The incidence of wool-blowing is influenced by climate, food and 

 shelter, particularly the former, which has a direct effect on the flies 

 and the food of the sheep. In localities subjected to severe winters 

 or drought during the summer, wool-blowing is usually rare, but 

 under warm and moist conditions the flies increase, and the grass being 

 plentiful, sheep readily become dirty and attract flies. The mortality 

 from maggot-flies is low in New Zealand flocks, owing to the practice 

 of crutching when the flies are active. The annual loss has been 

 estimated at 1 per cent., or 5-10 per cent, when sheep have not been 

 crutched. 



Tularaemia. — Med. Jl. Australia, Sydney, 9th Year, ii, no. 1, 1st July 

 1922, pp. 17-19. 



The history of tularaemia is reviewed. The various kinds of insects 

 transmitting the disease, and accounts of cases in America have 

 already been noticed [R.A.E., B, ix, 188 ; x, 96, 97, 122]. The disease 

 occurs in America under conditions that obtain very commonly in 

 Australia, and the transmitting insects are all found there too. So far 

 no case has been recognised, but the possibility of its appearance 

 should be borne in mind. 



Cooling (L. E.). On the Larval and Pupal Stages of Myzorhynchus 

 bancrofti, Giles, 1902. — Proc. R. Soc. Queensland, 1921, Brisbane, 

 xxxiii, 16th January 1922, pp. 166-173, 1 fig. 



In May 1921 three larvae and one pupa of Anopheles [Myzorhynchus] 

 barbirostris, Wulp, var. bancrofti, Giles, were found in a creek near 

 Brisbane, and these stages of this mosquito are fully described. 



