624 



one of the favourite host-fruits of the Mexican orange maggot 

 [A7iastrepha Jndens, Lw.]. Thirty-two living pupae of this pest were 

 taken from the package, but no broken pupal cases, so that it was 

 certain that none of the flies had emerged. Had it not been for the 

 quarantine restriction, these pupae, alive and ready to emerge, would 

 have reached Pasadena, the heart of the Calif ornian citrus district, 

 and being loose outside the guavas, would probably have escaped the 

 notice of the recipient. 



€ooK (A. J). Uniform Horticultural Laws.^ — Mthly. Bull. State Comm. 

 Hortic, Sacramento, iv, no, 7, July 1915, pp. 318-320. 



Pursuant to the enactment of Assembly Bill 1211 in relation to the' 

 establishment of quarantine against infectious plant diseases, the 

 author — as State Commissioner of Horticulture — has prepared an 

 order, one of the sections of which aims at impeding the spread of the 

 potato pests, Hetsrodera radickola (eel worm), Phthorimea opercidella 

 (tuber moth) and of various fungus diseases of the potato. 



QuAYLE (H. J.) & Tylor (A. R.). The Use of the Fungus Isaria for 

 the Control of the Black Scale. — Mthly. Bull. State Comm. Hortic. , 

 Sacramento, iv, no. 7, July 1915, pp. 333-338, 2 figs. 



On account of the interest manifested by some citrus growers in 

 the supposed efl'ectiveness of the fungus, Jsana, in controlling Saissetia 

 oleae (the black scale), the Citrus Experiment Station at Riverside 

 undertook tests with this fungus. The results of the tests, as well as 

 general observations made on this fungus since 1908, do not justify 

 the authors in offering any hope that it will keep the citrus trees free 

 from this pest. According to the report of the committee appointed 

 to investigate the artificial control of the black scale by fungi in Los 

 Angeles county, no difference between the treated and the untreated 

 trees was noted. 



rC^ Smith (H. S.), The Occurrence of the European Boxwood Leaf-Miner 

 ~" in California. — Mthly. Bull. State Comm. Hortic, Sacramento, iv, 



no. 7, July 1915, pp. 340-343, 1 fig. 



The Dipterous leaf-miner found on boxwood in a greenhouse at 

 Fresno [see this Revieiv, Ser. A, iii, p. 494] has been identified by Dr. 

 E. P. Eelt as Monarthropalpus buxi, Lab., the European boxwood 

 leaf-miner, which has already become well estabhshed on Long Island 

 and is seriously damaging boxwood hedges there [see this Revieiv, 

 Ser. A, iii, p. 459.] In Cahfornia only imported plants have been 

 attacked. Fumigation as recommended by Dr. Felt [see this Revieiv, 

 Ser. A, iii, p. 350], is the control measure advised, though hedges are 

 lather difficult to treat in this manner. 



