275 



Quarantine no. 37, respecting nursery stock, plants and seeds 

 [R.A.E., A, vii, 184], remains unchanged, but the regulations in con- 

 nection with it have been revised. The most important change is 

 that in the case of nursery stock and other plants and seeds for which 

 a permit is not required, these must be free from sand, soil or earth. 

 With regard to the inspection previous to entry, inspection must be 

 made at the time of packing of all nursery stock and other plants 

 or seeds, and the certificate of inspection must include certification 

 of packing materials and that the plants have been washed and are 

 free from soil. A number of definitions have been added and a few 

 unimportant verbal changes have been made in other regulations. 

 The provisions of entry and the restrictions imposed are explained 

 at length. 



Quarantine no. 43, against the European corn-borer, Pyrausta 

 nubilalis [R.A.E., A, viii, 511], is amended by Regulation no. 4, 

 making inspection and certification a condition of movement from 

 infested areas. 



The situation with regard to the gipsy moth [Porthetria dispar] 

 and the brown-tail moth [Nygmia phaeorrhoea] in the infested 

 areas of New York, Pennsylvania and New Jersey, is discussed in 

 detail. During 1920 there was a considerable spread westward of 

 the gipsy moth, while there has been a reduction in the area infested 

 by the brown-tail moth. In a regulation supplemental to Quarantine 

 no. 45, of 1st July 1920, the areas designated as infested by P. dispar 

 are enumerated, and the quarantine is extended to include 62 new 

 towns. The town of Berlin, N.H., is eliminated from the quarantine. 



The presence of Epilachna corrupta, Muls. (Mexican bean-beetle) in 

 Alabama has made it necessary to quarantine that State, and under 

 Quarantine no. 50 of 1st May 1921, numerous leguminous and other 

 plants and plant products cannot be moved interstate, except under 

 the conditions provided in the rules and regulations supplemental 

 thereto. 



A list of current quarantine and other restrictive orders is given. 



SiEGLER (E. H.) & Plank (H. K.). Life History of the Codling Moth 

 in the Grand Valley of Colorado. — U.S. Dept. Agric, Washington. 

 B.C., Bun. 932, 20th September 1921, 119 pp., 7 plates, 36 figs. 

 [Received 14th March 1922.] 



The life- history of Cydia {Laspeyresia) pomonella, L., as occurring 

 in the Grand Valley of Colorado is described in great detail. The 

 insects predacious on it are a beetle, Tenebroides corticalis, Melsh., and 

 a spider, Coriarachne versicolor. Keys. Its parasites are Trichogramma 

 miniitum, Riley, Dibrachys clisiocampae. Fitch, and Arthrolytus 

 apatelae, Ashm., but these natural enemies are unimportant as a means 

 of checking it in the Grand Valley. 



A portion of the authors' summary is as follows : The emergence 

 of moths from fruit cellars is later than that in the field. The period 

 of emergence in such cellars, however, is shorter than that which 

 obtains under field conditions. The majority of the moths of the 

 spring and first broods emerge during the latter part of the morning 

 and early part of the afternoon. The codling moth is believed to be 

 a non-migratory species except for short local flights. The moths 

 have, however, sufficient strength to fly in a continuous flight, unaided 

 by the wind, for a distance of at least half a mile. The female is 

 most active in depositing her eggs late in the afternoon to early in the 



