VI CONTENTS 



Diseases of Various Cuops. — 1,033. Diplodia Zeae, the Cause of Drj' Rot in Maize. — 

 1034. Researches on the Silver scurf Disease (Spondylocladium atrovirus) of the Potat(j. 

 — 1035. Tobacco Diseases and Pests in Eastern Java. — 1036. Diplodia sp., a Melon 

 Disea.se in the United States. — • 1037. Sclerotinia libertiana, a Disease of Citrus and other 

 Plants Cultivated in California. — 1038. Black Rot of the Vine (Guigtiardia Bidwellii) 

 attacking Vitis rotundifolia and V. Munsoniana (Muscadine Grapes) in the United States 

 — 1039. Hypoderma deformans n. sp., attacking the I/cavcs of Piniis pondcrosa in the 

 United States and Canada. 



IV. — Weeds and Parasitic Pi,owbring Pi<ants. 



1040. " Witch Weed " or " Rooi-Bloem " (Striga lutea), a Phanerogam parasitic on Maize in 

 Rhodesia." — ^1041. Khaki Weed (Alternanthera ac/iymwifta) in Queensland. — 1042. Cut 

 leaved Nightshade (Solanum triflorum Nut.) and I,ondon Rocket [Sisymbrium Irlo) New 

 Weeds in New South Wales. — 1043. Agrostemma githago among Cereal Grains : Determin- 

 ing the Coefficient of Impurity. 



V. — Injurious Insects and other Lower Animai,s. 



Means of Prevention and Control. — 1044. Experiments in I^ocust Control by Means of 

 Coccobacillus acridiorum in Argentina.- — 1045. Spicaria Cossus, n. sp., a Hyphomycete 

 isolated from the I^arva of "Cossus Rongebois " (Cossus Cossus). — 1046. A Form of 

 Boirytis bassiana, Isolated from the l,arva of the Macrolepidopteron Nonagria typhae. 

 — 1047. The Successful Treatment with Insecticides of Plants in Flower. 



Insects etc., Injurious to V-'Muous Crops. — 1048. Insect Pests of the Sugarcane in Queens- 

 land, Australia. — 1049. Nysius vinitor, a Hemipterous Pest in Australia. ■ — 1050. Un- 

 spotted Tentiform Apple I^eaf Miner (Ornix geminatella) , a Microlepidopterous Pest of se- 

 veral Fruit Rosaceae in America. — 1051. Woolly Pear Aphis [Eriosoma pyricola n. sp.). 

 Injurious to the Pear Tree in California. — 1052. Galenicella cavicolHs , a Coleopterous Pest 

 of Cherry and Peach Trees in the United States. — 1053. Terrapin Scale (Eulecanium 

 nigrofasciatum) , Injurious to the Peach Tree in America. — 1054. Anastrepha serpentina, 

 a Dipteron Iniurious to Several Fruit Plants in Brazil. — 1055. Gravepine Flea Beetle 

 (Haltica chalybea), a Coleopterous Pest of Vitis roiundifolia and V . Munsoniana (Muscadine 

 grapes) in the United States of America. 



VI. — Injurious Vertebrates. 



1056. The Control of Field Voles in Italy. 



The Bureau assumes no responsibility with regard to the opinions and the results of experiments 

 outlined in the Bulletin. 



The Editor's notes ^re marked (Ed.). 



