542 



several years in the district where it was first estabUshed, and is also 

 spreading. The estabhshment of this wasp is of considerable interest 

 as it has proved valuable in keeping the cotton worm [Alabama 

 argilliicea] in check. 



Sherman (R) & Leiby (K. W.). The Fall Army-Worm. — iV^or^^ 

 Carolina Agric. Exten. Service, W. Raleigh, Circ. no. 79, 

 September 1918, 7 pp., 1 fig. 



In consequence of a destructive outbreak of Lapliygma frugiperda 

 (fall army- worm) in various parts of North Carolina in early September 

 1918, this circular was issued for distribution in time for the severe 

 infestation expected in late September and early October. A brief 

 popular account is given of the life-histor\^ and habits of the moth 

 and various recommendations for control of the larvae are included 

 [see this Revieiv, Ser. A, v, pp. 17-i & 386]. 



Ballou fH. A.). Cotton Stainer Control in St. Vincent. — Agric. News, 

 Barbados, xvii, no. 426, 24th August 1918, pp. 266-267. 



An account of the extensive measures against the cotton stainer 

 [Dgsdercvs delauneyi] in St. Vincent in 1918, shows the great need 

 for co-operation between planters and the Government in the destruc- 

 tion of the food-plants of the insect, and the establishment of a close 

 season, during which no cotton shall be grown. 



In order that a close season may be a success, the law must be 

 most strictly enforced, and at the appointed time all cotton must be 

 removed from the fields and disposed of in the manner considered to 

 be the most suitable. No compromise is possible, if the cotton industry 

 is to be safeguarded, and this is also true of the destruction of the food- 

 plants of the insect. It may be found necessary to attempt the 

 eradication of Ochroma lagopifs (cork wood), but at present Sterculia 

 carihaea (mountain John Bull) is not equally important. The value 

 of the destruction of alternative host-plants having been demonstrated, 

 the exercise of constant care is necessary to prevent new growths of 

 these plants, and to apply the provisions of the law to other plants 

 as soon as they become important hosts. 



Cotton-stainers are particularly free from natural enemies, and in 

 the West Indies it is certain that there are none that can be expected 

 to exercise any satisfactory degree of control over this pest. 



FuLLAWAY (D. T.). Division of Entomology. — Hawaiian Forester & 

 Agriculturist, Honolulu, xv, no. 8, August 1918, pp. 235-236. 



During the month of June the insectary handled 26,500 pupae 

 of the melon fly {Daciis cucurbitae], from which were bred 2,346 indi- 

 viduals of Opius jlelcheri. The parasites distributed were :■ — Opius 

 humilis, 285 ; 0. Jlelcheri, 2,391 ; Diachasma tryoni, 735 ; Tetrastiches 

 giffardianus, 1,200 ; Spalangia cameroni, 4,200 ; and Paranagrus 

 osborni, 20,800. 



