427 



Pettit (R. H.). Periodical Cicada. — Qrtrly. Bull. Michigan Agric. 

 Expt. Sta., East Lansing, i, no. 4, May 1919, pp. 167-168. 



The 17-year locust [Tibicen septetndecim], which has been predicted 

 to appear in May and June 1919 [see this Review, Ser. A, vii, p. 381], 

 is not expected to be seen in any new localities of Michigan, as its 

 numbers have decreased at each appearance, in view of which fact 

 the swarms for that State should be smaller than ever. 



Report of Committee on uniform Rules and Regulations to govern 

 Certification of Seed Potatoes. — Mthly. Bull. Gal. State Gommiss. 

 Horlic, Sacramento, viii, no. 6, June 1919, pp. 304-307. 

 [Received 11th August 1919.] 



It is notified that the presence of the eelworm, Heterodera radicicola, 

 Greef., and the potato tuber moth, Plithorimaea operculella, Z., as 

 well as of certain specified fungus diseases, will prevent certification 

 of seed potatoes in California. 



Maskew (F.). Report for the Month of April 1919.— Mthly. Bull. Gal. 

 State Gommiss. Horfic, Sacramento, viii, no. 6, June 1919, pp. 

 309-311. 



Insect i^ests intercepted during April 1919 included : — From 

 Borneo : Araecerus fasciculatus, Cryptophagid beetles, Lasiodernui 

 serricorne and Lepidopterous larvae in nutmeg and various spices. 

 From Central America : Saissetia oleae, Aspidiotus lataniae and 

 Ghrysomphalus dicfyos2)ermi on assorted plants ; G. scutiformis and 

 Aspidiotus cyanophylli on bananas ; Gamponotus maculatus and 

 Prenolepis sp. on tree fern ; Pseudococcus virgatus and Parlatoria 

 pioteus var. crotonis on croton ; Pseudococcus sp. and Aspidiotus sp. 

 on bananas. From Chile : Phthorimaea operculella in potatoes. 

 From Connecticut : Pseudococcus citri on Gardenia. From Florida : 

 Lepidosaphes beckii and Phomopsis citri on grapefruit. From Hawaii : 

 Hemichionaspis minor, Ripersia palmarum and Ghrysomphalus aonidum 

 on coconuts ; Lecanium sp. on a pot-plant ; Diaspis bromeliae and 

 Pseudococcus bromeliae on pineapples ; Goccus longulus on betel leaves ; 

 Aspidiotus lataniae and Phenacaspis eugeniae on mangos ; Lepidosaphes 

 beckii, Pseudococcus citri and ants on croton cuttings ; weevils in 

 seed-pods. From Japan : Xyleborus sp., Eulecanium sp. and cicada 

 eggs on Wistaria ; Otiorrhynchid weevils and ants in packing of 

 nursery stock ; Pseudococcus sp. on cedars ; Aphids and Gicada 

 eggs on persimmons ; an Aegeriid borer in Gamellia japonica. From 

 Mexico : an undetermined weevil in sweet potatoes ; Heliothis 

 (Ghloridea) obsoleta in tomatoes and Ghrysomphalus aurantii on 

 lemons. From Nevada : Heterodera radicicola on potatoes. From 

 Pennsylvania : Aphis sp. on rose plants. From the Philippines : 

 Pseudococcus virgatus on croton ; Pseudococcus crotonis, Parlatoria 

 pseudaspidiotus and Pseudaonidia cureuliginis on orchids. From 

 Tonga : Ripersia palmarum on coconut palm. From Washington : 

 Lepidosaphes uhiii on apples. 



(C596) ii2 



