CONTEKTS. V 



Page. 



The perfect stage of Cylindrosporium on Prunus avium, Higgins 349 



Causes of deterioration of grapevine in Sicily, I, Petri 349 



Black rot of grapes, Prunet 349 



Botrytis cinerea, Lafforgue 349 



Incubation period of Plasmopara on grapevines, von Istvanfli 350 



The germination of winter spores of Plasmopara viticola, Ravaz and Verge. . . . 350 



Banana diseases in Jamaica, Ashby 350 



The Surinam Panama disease of the Gros Michel banana, Drost, trans, by Ashby. 350 



The situation in the citrus district of Batangas, Wester 350 



A second contribution to the study of gummosis of orange, Bertoni 351 



Silver thread blight of coffee in Surinam, Kuijper 351 



Black canker of chestnut, Briosi and Farneti 351 



Pycnospores and ascospores of chestnut-blight fungus, Heald and Gardner 351 



Rubber tree diseases, Petch 351 



Attempts to grow mistletoe ( Viscum album) on monocotyledons, Heinricher. . . 352 



Streak, a bacterial disease of sweet pea and clovere, Manns and Taubenhaus 352 



ECONOMIC ZOOLOGY — ENTOMOLOGY. 



Distribution and migration of North American herons and their allies, Cooke. . 352 



Bibliography of writings of Professor John B. Smith, compiled by Grossbeck. . . 353 



Remarks on some of the injm'ious insects of other countries, Quaintance 353 



Insects of Labrador 353 



Miscellaneous insect pests, Symons and Cory 353 



A contribution to the morphology and biology of insect galls, Cosens 353 



The insects affecting sugar cane in Porto Rico, Van Dine 353 



Mexican sugar-cane insects fi*om Santa Lucrecia, Uriah and Heidemann ... 353 



Injury of tobacco by insects, Schwartz 353 



Principal insects and diseases of the apple in Georgia, Chase 353 



Various insects affecting nut trees, Gossard 354 



Injuries following application of petroleum products to dormant trees, Felt 354 



The effects of oil insecticides on citrus trees and fruits, Yothers 354 



The success of a two-spray calendar in a Kansas orchard, Hungerford 354 



The destruction of the locust by its natural enemies, Gallardo 354 



Notes on tree crickets, Parrott and Fulton 354 



New Thysanoptera from Florida, Watson 354 



The false tarnished plant bug on pears, Parrott and Hodgkiss 354 



Peach "stop back" and tarnished plant bug (Lj/gTis pratensis), Hasemau 354 



The apple leafhopper {Empoasca mali), Haseman 354 



Fall spraying for the pear psylla, Hodgkiss 354 



The pear psylla, PaiTott and Hodgkiss 355 



The cotton or melon aphis, Sanborn 355 



The control of plant lice on apple trees, Hodgkiss and Fulton 356 



The phylloxera invasion and reconstitution of vineyards in Spain, Janini 356 



A new California coccid infesting Manzanita, Whitney 356 



Vanessa californica in California and Oregon during 1911-12, Webster 356 



Arsenate of lead against the tobacco hornworms, Morgan and Parman 356 



The maize stalk borer and its control (Sesamiafxisca), Moore 356 



Some notes on Laphygma frugiperda in Porto Rico, Jones 356 



The 1912 outbreak of Alabama argillacea in Peru, Townsend 356 



The sugar-cane tingid from Mexico, Heidemann 357 



Itx)nida anthici n. sp., Felt 357 



The wheat fly in central Sweden during 1912, Henning 357 



Bleeding trees, Felt 357 



PeUagra and the sand-fly, II, Hunter 357 



Mosquitoes of North and Central America and West Indies, Howard et al 357 



Preliminary note on the finding of Hypodei-ma hovis at Agassiz, B.C. Had wen. . 357 



Influence of metamorphosis of Musca donxestica upon bacteria, Tebbutt 357 



Relation of stable fly {Stomoxys calcitrans) to infantile paralysis, Brues 358 



Tachinidse and some Canadian hosts, Tothill 358 



Muscoid parasites of the cotton-stainer and other lygasids, TowiLsend 358 



Inquiry into the relationships and taxonomy of the muscoid flies, Townsend. . 358 



A S3Tiopsi3 of the Sapromyzidte, Melander 358 



The Coleoptera of the British Islands, Fowler and Donisthorpe 358 



The life cycle of Lacknosierna tristis, Davis 359 



Experiments with Roentgen rays on cigarette beetle, Morgan and Runner 359 



An enemy of the cigarette beetle, Morgan 359 



