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based on creneral considerations onlv. Hi]l-land malaria in Malava. 

 and perhaps in India,, is probably so difficult to control because it is 

 conveyed by mosquitos of bigh infectivity and low prevalence, whereas 

 low-land malaria can be prevented because it is carried by mosquitos 

 of low infectivity and high, prevalence. 



NuTTALL (G. H. F.). Notes on Ticks, iv. — Parasitdogy, Cambridge, 

 viii, no. 3, January 1916, pp. 294-337, 21 figs. 



Tbe following new ticks are described : — Ixodes eichhorni, sp. n., 

 found on the person of a collector at Rook Island, German Xew 

 Guinea, and on a kingfi^sher in the Admiralty Islands ; I. victor iensis, 

 sp. n., on Phascohinys, in Victoria. Australia ; I. imirobiensis, sp. n., 

 on a dog at Nairobi ; /. ricinvs var. gibbosus, var., n.. on Copra hircus, 

 in Smyrna, in company with Hyahmrna a-egypttum and Ea^maphjsalis 

 cinnabarinu var. punctata ; 1. denMus var. spinipalpis, var. n., on 

 Lepus americanus and Seimus hudsonius in Western Canada. 



Additional stages of the following species are described: — I.japonensis, 

 Neum., from Yunnan on the borders of China and Tibet, Upper Burma 

 and Japan ; I. nuttaUi, LahiUe, from Peru ; /. aurituJus, Xeum.. on 

 an undetermined bird from the Straits of Magellan, on TrupiaJis 

 militaris from Tierra del Fuego, on a thrush from Peru, on a bird from 

 Costa Eica, and on Haliaetus leucocephalus alascanus from Canada. 

 Species redescribed include : — I. gramdatus, Supino, on Sciurus spp. 

 and Felis tigris in Burma, and on Epimys rufescens in India ; I. anatis, 

 Chilton, on Anus superciliosa and Apteryx mantelli from Xew Zealand ; 

 I. eudyptidis, !Mask., on penguins, Xew Zealand ; /. tasnmni. Xeum., 

 on Triehosurus vulpecula and Dasyurus macidata in Australia. 



Malloch (J. R.). Some Additional Records of Chironomidae for 

 Illinois and Notes on other Illinois Diptera. — Bull. Illinois State 

 Lab. Nat.-Hist., Vrbana. xi. Article -i, December 1915, pp. 305- 

 363, 6 plates. 



These notes on blood-sucking midges include the following species : — 

 Culicoides guttipennis, Coq., occurring commonly in June and July 

 1915 ; C. stdlifer, Coq., biting man in August ; C. sanguisugus, Coq., 

 a common species in towns ; C. haemutopotus, 3IaUoch, taken 

 in Mav and June ; C. biguttatus, Coq., not pre^'iou3ly recorded 

 from Illinois ; and PseudocuJicoides griseus, Coq., biting man early 

 in Mav. The author expresses the opinion that the species which he 

 described as P. major may be synonymous with P. griseus. Several 

 specimens of Ceratopogon peregrinus, Johannsen. were found on 7th 

 Julv feeding on a dead worm. The genus Xeoceratopogon is erected 

 for Ceratopogon bellus, Coq. Descriptions are also given of Forcipcmyia 

 elegantula, sp. n., Euforcipomyia hirtipennis, gen. et sp. n., E. {Cerato- 

 pogon) fusicornis, Coq., Johannsenomyia albibasis, sp. n., the male 

 of which bears a striking resemblance to Probezzia pallidu which 

 occurred with it, and Probezzia infuscata, sp. n. 



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