149 



Splendore (A.), Nuove osservazioni sul Toxoplasma cuniculi 

 [New observations on Toxoplasmn cuniculi.] — Atfi R. Accad. 

 del Lincei, Rome, xxii, no. 10, 18tli May 1913, pp. 722-727. 



In discussing the morpholog'y and development of the Toxo- 

 plasma of the rabbit inoculated into pigeons, the author remarks 

 that the sexual forms of this parasite must develop in some 

 invertebrate host, the probability being that Stomoxys will be 

 found to be the carrier. 



WiNSLOw (C. E. A.). An Insect-borne Disease; Infantile Paralysis. 

 — Amer. Museum JL, xiii, no. 5, May 1913, pp. 229-235. 



A popular resume of investigations regarding tlie aetiology of 

 poliomyelitis and the bionomics of Stomoxys calcitrans. 



PoKTCHiNSKY (I. A.). OBMKTIOBEITHAa .lynOTlOVKKA ; Efl 



r.Kuona ii. iiciPEnjEiiiE .miiiiiiKAMii eh .iiniiiiioKb 



KOMIIATlIOli M.VXII [Hydrotaea dentipes ; its biology and the 

 destruction by its larvae of the larvae of Miisca domcstica\ — 

 TPy/tbl BtOPO no aUTOMOJOnil, y'lenaro KoMHTCia LiaBiiaro 

 ynpaBJCiiiff 3c\i.ieycTpoiicTBa \\ 3eM.ie,^i5.iia [Memoirs of the 

 Bureau of Entomology of the Scientific Committee of the 

 Central Board of Land Administration and Agriculture], ix, 

 no. 5, 30 pp., 23 figs. St. Petersburg, 1913. 



In this paper the author describes his studies of H. dentipes 

 and its relation to other species of coprophagous flies, which are 

 at the same time very fertile and practically omnivorous feeders. 

 Such species, in the autlior's opinion, are driven by the com- 

 petition between the numerous dung-feeding larvae in the open, 

 to avoid these materials in depositing their eggs, and to seek the 

 protection of man by using closed, protected spaces near his 

 habitations. But even there the larvae of some of them {S. 

 calcitrans and Musca dom:estica) are not quite safe, their existence 

 being threatened by the rapacious larvae of Hydrotaea dentipes, 

 wliicji, like themselves, are very numerous and omnivorous and 

 also cannot survive in the open. An accidental observation led 

 the author to investigate more closely the relations between the 

 larvae of these different flies ; he noticed the rapid decrease of 

 some larvae of Musca domestica in a glass in which he was breed- 

 ing them, and having examined the dung, he found 3 larvae of 

 H. dentipes which had evidently hatched from eggs left by 

 accident in the glass in which he had previously kept some 

 females of the latter fly. Further experiments invariably con- 

 firmed the total disappearance and destruction of the larvae of 

 M. domestica, as well as of S. calcitrans by the rapacious larvae 

 of H. dentipes. The author points out that both the females of 

 M. domestica and H. dentipes oviposit freely in captivity and 

 that he used for a bait in attracting the latter flies pieces of 

 rotten meat in an open glass. As the larvae of //. dentipes breed 

 also in rotten meat, the author experimented on their relations 



(31430—2.) Wt. P 11—12. 2000. '.»/13, D & S. 



