ECONOMIC ZOOLOGY ENTOMOLOGY. 155 



low growths are better than trees, since tangles of bushes and vines afford a 

 more secure retreat from bird enemies and are the favorite cover of many 

 species. Where birds occur in large numbers their enemies are sure to con- 

 gregate. Hence grounds especially designed to attract birds should also be 

 furnished with devices to insure security from cats and other predatory 

 animals." 



A trypanosome of a field mouse (Microtus arvalis), A. Laveran and A. Petit 

 {Comi)t. Rend. Soc. Biol. [Paris], 67 (1909). No. 37, pp. 198-800, fig. 1).—A 

 trypanosome found in the blood of a field mouse, obtained from the department 

 of Seine-et-Oise, France, is described as representing a new species to which 

 has been given the name Trypanosoma microti. The species appears to be 

 nonpathogenic. 



Note on the mode of multiplication of Piroplasma bovis as observed in 

 the living" parasite, G. H. F. Nuttall (Parasitology, 2 {1909), No. Jt, pp. S.'tl- 

 S.'iS, dgm. 1). — ^This account of observations of the mode of division of P. bovis 

 and the character of its amoeboid movement in fresh blood is illustrated graph- 

 ically by a diagram, composed of figures selected from a series of sketches 

 made while watching the live parasite under the microscope. 



The cultivation of Piroplasma equi, E. J. Marzinowsky (Ztschr. Hyg. u. 

 Infcktionxknuik., (>2 {1909). No. 3. pp. .'//7-.'/22, pL 1).—A brief review of the 

 cultivation of protozoa is given. The author finds P. cqui to develop in a 10 per 

 cent solution of chemically pure sodium citrate. Developmental forms were 

 found to appear on the second day and a culture was kept alive for 30 days. 

 By transference to of fresh media the parasite was kept until the third genera- 

 tion. 



Observations on Theileria parva, the parasite of East Coast fever of cattle, 

 G. H. F. NrxTALL, H. B. Fantham, and Annie Porter {Parasitology. 2 {1909). 

 No. Jf. pp. 325-3.'iO, figs. //, charts 2). — The authors here i-eport observations 

 that were conducted upon the blood of 2 cows experimentally infected by means 

 of ticks {Rhipiccplialus evcrtsi), from South Africa. 



" Summarizing our observations on the living parasite, we would state that 

 they show active movements within the corpuscles and at times undergo altera- 

 tions of form. No structural details can be made out in living parasites. We 

 have not obtained any conclusive evidence that the parasites multiply within 

 the infected corpuscles, but at times appearances were observed suggesting this 

 l)ossil)ility. In several cases the parasites seemed to "grow slightly in size dur- 

 ing the i)eriod of observation. When infected corpuscles lost their hemoglobin 

 the parasites were distinctly seen for a time, after which they degenerated and 

 died. The escape of parasites from infected corpuscles was witnessed on six 

 occasions; it w-as accomplished without injury to the corpuscle. On two occa- 

 sions the escaped parasites appeared to reenter fresh corpuscles." 



The life cycle of Herpetomonas jaculum, parasitic in the alimientary 

 tract of Nepa cinerea, Annie Porter {Parasitology. 2 (1909). No. .'/. pp. 361- 

 391. pi. 1, fig. 1). — The complete life history of this apparently nonpathogenic 

 parasite is given for the first time. Most of the common water scorpions (N. 

 rincrca) obtained from the southeast of India were infected with it. The 

 occurrence of a new species of Herpetomonas (H. bcspac) in the alimentary 

 tract of a hornet (\'<.spa crahro) is also recorded. 



A handbook of microscopical technique as related to investigation of the 

 protozoa, S. J. von Prowazek (Taschenhuch dcr mikroskopischcn Technik der 

 Prdiistvnuntcrsnchung. Lcipsic, 1909, 2. ed., pp. 81; rev. in Parasitology , 2 

 (1909), No. .'/, p. 'i3(i). — A second enlarged edition. 

 48507°— No. 2—10—5 



