215 



Friederichs (K.). Zur Kenntnis der deutschen Simuliiden, Vor- 

 laufige Mitteilung. [A preliminary Communication on German 

 Simuliids.] — Sitzungsber. u. Abh. naturf. Ges. zu Rostock, N.S. 

 vii, 1920, pp. 211-226. 



In view of the losses caused by Simuliids to cattle in Central and 

 North Germany, the author has prepared a work on the 10 German 

 species, but as its publication is likely to be delayed, this preliminary 

 notice is issued. 



As a result of his perusal of Edwards' paper on British Simuliids 

 {R.A.E., B, iii, 140] the names used by the author in his previous 

 paper [R.A.E. , B, viii, 134] have been radically altered. The species 

 there recorded as Simulium maculatmn is now described as S. costatum, 

 sp. n., and for S. angiistitarse, Lundstr., it is necessary to substitute 

 S. avreum,, Fries. 



A key and explanatory notes are given to S. ornatum, Meig., S.reptans, 

 L., ;S. monticola, sp. n,, S. venefica, sp. n., S. argyreatum, Meig., S.pictum 

 Meig., S. auricoma, Meig., S. costatum, sp. n., S.latipes, Meig., S.aureum, 

 Fries, S. angusti2)es, Edw., S. tnacidatum, Meig., and S. Jiirtipes, Fries. 



Foot K.). Preliminary Note on the Spermatogenesis of Pediculm 

 vestimenti. Determination of the Sex of the Offspring from a 

 single Pair of Pediculus vestimenti. — Biol. Bull. Marine Biol. Lab., 

 Woods Hole, Mass., Lancaster, Pa., xxxvii, no. 6, December 1919, 

 pp. 371-384 & 385-387, 2 plates. 



The contents of these papers on Pediculus humanus (vestimenti) are 

 indicated by their titles. 



Arrow (G. J.). A peculiar new Genus of Australian Beetles. — Atm. 

 Mag. Nat. Hist., London, vi, no. 34, 1920, pp. 434-437. 



Macropocopris, gen. no v., is proposed for certain coprophagous 

 beetles found attached to the fur of wallabies. The species belonging 

 to this genus are tabulated, and M. prehensilis, sp. n., and 

 M. symbioticus, sp. n., are described from Queensland. 



Speyer (E. K.). Notes on Chemotropism in the House-Fly. — Ann. 

 App. Biol., Cambridge, vii, no. 1, September 1920, pp. 124-140. 



The first series of the experiments here described was made with 

 various common food-stufl's, with the result that banana was found 

 to be the most attractive to house-flies ; it became increasingly 

 attractive during fermentation, but the attractive power passed ofi as 

 the putrescent mass dried. Experiments were then undertaken with 

 the decomposition products of banana and substances aUied to them. 

 Carbohydrates in an unfermenting condition were very httle attractive. 

 Valerianic acid, amyl acetate and amyl alcohol were attractive in 

 that order ; they were more attractive than unripe banana, but less 

 so than decomposed banana. 



Further experiments were made with alcohols, aldehydes and acids, 

 and the following conclusions were dra^vn. Saturated alcohols. 



