ECONOMIC ZOOLOGY ENTOMOLOGY. 57 



reneta ) said to exist in four conidial forms, known by other names, an asciger- 

 ous stage developing in late winter or in very early spring on leaves kept over 

 winter. Notes are also given on three other fungi commonly found on twigs 

 killed by the blight. 



A disease of plantation rubber caused by Ustulina zonata, F. T. Brooks 

 (Neto Phijtol., 14 (1915), No. 4-5, pp. 152-164, figs. 6).— The author describes 

 a collar and root disease attacking rubber trees live years old and upward, 

 said not to have been noted before 1914 in Malaya, and ascribed to V. zonata. 



Field and laboratory studies are described. The trouble is said to be readily 

 distinguishable from the root diseases caused by Femes semitosttis (F. lignosus), 

 Sphccrostilbe repens, and Hymenocha'te noxia. The fructifications, which form 

 grayish and brown or blackish plates, are found in the collar or on the exposed 

 lateral roots. The fungus probably often begins its growth on decaying stumps 

 or follows attacks of white ants. 



The removal of all discolored tissues is considered important. 



Diseases of Manihot glaziovii, P. Abens (In International Rubber Congres 

 met Tentoonstelling, Batavia, 1914' — Rubber Recueil. Amsterdam: J. H. de 

 Bussy [1915], pp. I40, 141)- — A description is given of the disease of M. glaziovii 

 in Java due to Fomcs scmitostus, and another disease ascribed to the improper 

 removal of the outer bark before tapping, which leads to decay and insect 

 attack. 



Diseases of Hevea brasiliensis in Java, A. A. L. Rutgers anl P. Arens (In 

 International Rubber Cmigres met Tentoonstelling, Batavia, 1914- — Rubber 

 Reeueil. Amsterdam: J. H. de Bussy [1915], pp. 130-139, figs. 4)- — Notes are 

 given on the principal fungus diseases that have been observed on H. brasiliensis 

 in Java. 



The fungus diseases of Hevea brasiliensis, T. Petch (In International 

 Rubber Congres met Tentoonstelling, Batavia, 1914- — Rubber Recueil. Amster- 

 dam: J. H. de Btissy [1915], pp. 116-129). — Compiled data are given relating 

 to the fungus diseases observed on the leaves, stems, and roots of H. brasiliensis 

 in Ceylon, with suggestions for their control so far as definite means are known. 

 No new diseases are reported and the general situation is considered satis- 

 factory. 



Boot diseases in Malaya (Agr. News [Barbados], 14 (1915), No. 34I, PP- 174' 

 175). — This is a brief notice of the two root diseases of Hevea reported by 

 Brooks (B. S. R., 33, pp. 150, 449) as due to Ustulina .zonata and Sphwrostilbe 

 repens, respectively. 



ECONOMIC ZOOLOGY— ENTOMOLOGY. 



A history of British mammals, G. E. H. Barrett-Hamilton (London: 

 Gurney & Jackson, 1914, vol. 2, pts. 15, pp. 3+409-456, pis. 3, figs. 10; 16, pp. 

 457-504, pis. 4. figs- 9). — A continuation of the Muridse, or mice and rats, of 

 the Rodentia, previously noted (E. S. R., 31, p. 248). 



It is announced that owing to the death of the late author the work, com- 

 mencing with Part 16. will be completed by M. A. C. Hinton. 



The prairie dog and its control, I\I. H. Swenk (Nebraska Sta. Bui. 154 

 (1915), pp. 5-38, figs. 4)- — -A. general account of the prairie dog of the plains 

 (Cynomys ludovicianus) is followed by a more detailed discussion of control 

 measures, including competitive experiments in fall and spring poisonings, 

 fumigation experiments, etc. 



Experimental tests were made from October 22 to December 12 of ten 

 formulas that have been recommended for use in poisoning prairie dogs, the 



