364 



reported as attacking succulent plants. These are usually controlled 

 by parasites, but otherwise can be checked by arsenic sprays. The 

 melon fly, Bactrocera (Dacus) cucurbitae, has been reported infesting 

 cabbage, but this is thought to have been due to abnormal conditions 

 in the plant. The absence of clean cultivation is one of the principal 

 sources of trouble in growing cruciferous crops. When the crops are 

 gathered, the stumps and rubbish should also be disposed of. Burning 

 or burying several feet deep would give better results than deep 

 ploughing. This measure is almost essential in dealing with insects 

 which breed throughout the year. 



Ehrhorn (E. M.) & FuLLAWAY (D. T.). Report of the Division of 



Entomology. — Hawaiian Fores'er and Agriculturalist, Honolulu, 

 xii, no. 2, February 1915, pp. 46-49. 



^ Since 1st January 1915, citrus nursery stock has not been allowed to 

 be imported into the United States or its territories from foreign 

 countries, owing to the dangerous disease known as Citrus Canker. 

 Two packages of mistletoe imported from California into Hawaii 

 were fumigated on account of infection with Aspidiotus rajMx, the 

 greedy scale. Sunflower seed from Portugal was found to contain 

 the larva of a Tortricid moth. The following parasites have been 

 bred and liberated : — Diachasma fuUawayi, D. tryoni, Tetrastichus 

 giffardii, Spalangia sp., Opius humilis, and Galesus sp. The con- 

 spicuous feature of the work on parasites was the retardation in develop- 

 ment due to low temperatures for a certain period ; no harm resulted 

 from this. Observations showed that the Spalangia brought from 

 West Africa was a true fruit-fly parasite, but its slow development 

 rendered it impossible to secure numbers large enough to warrant 

 hberation in the open. 



Tryon (H.). Nut Grass-destroying Coccid and its Mitigation. — Queens- 

 land Agric. JL, Brisbane, N.S. iii, no. 2, February 1915, p. 72. 



The author discountenances the use of the so-called " Mealy Bug " 

 Antonina purpurea australis for destroying nut-grass in view of the 

 fact that all described species of Antonina are associated mth Grami- 

 naceae, including sugar-cane, maize, wheat and other cereals. He 

 has further found this insect associated Avith buffalo grass and with 

 one of the native Graminaceae. 



Jarvis (E.). The Sugar-cane Bud Moth, Loxostoma sp., Fam. 

 Tineidae. — Queensland Agric. Jl., Brisbane, N.S. iii, no. 2, 

 February 1915, pp. 72-76, 1 pi. 



Although of little economic importance, a Tineid belonging to the 

 genus Opogoyia [Loxostoma) occasionally proves injurious to seed cane, 

 the caterpillars sometimes destroying as much as 80 per cent, of the 

 eyes in soft varieties like " Clark's Seedhng." This moth is probably 

 related to Ereunetis jiavistriata, Wlsm., which is said to occur com- 

 monly at times throughout Hawaiian cane-fields, and to occasion a 

 good deal of loss by destroying the buds of soft varieties desired for 



