56 EXPERIMENT STATION EECOED. 



dorsal scale of this insect. Some of the lime-sulphur washes gave fair results 

 and if spraying for the gloomy scale could be repeated year after year, as in 

 the case of the San Jose scale, they might be recommended. But with shade 

 trees this is usually not practicable. None of the spring applications were at 

 all satisfactory, and it was impossible to see that any of the trees sprayed in 

 the spring had been benefited to any marked degree." 



Apropos of Aleyrodes olivinus, C. Campbell {Abs. in Internat. InH. Agr. 

 [Rome], Bui. Bur. Agn. Intel, and Plant Diseases, 2 {1911), '\"o. 7, p. 1836). — 

 The author calls attention to the fact that A. olivinus, described by Silvestri 

 (E. S. R., 26, p. 149) as a new olive parasite in central and southern Italy, and 

 recently recorded by Chapelle as a new olive pest in Spain, is not only found 

 in Italy but also in Tunis, where the author has himself found specimens. He 

 has also noted its presence in Smyrna. 



The larg'er canna leaf-roller (Calpodes ethlius), F. H. Chittenden {U. S. 

 Dept. Agr., Bur. Ent. Circ. l.'/S, pp. 10, figs. 8). — During the year 1911 the canna 

 leaf-roller was abundant in various parks in the District of Columbia, at West 

 Grove, Pa., and at points as far south as Orlando, Fla. This circular describes 

 its injury and method of attack, distribution, stages, life history and habits, 

 natui'al enemies, and methods of control. 



The caterpillars of this butterfly appear to attack only plants of the genus 

 ■Canna, when these are obtainable, at times utterly destroying luxuriant plants. 

 Attention is attracted to its injury by the large irregular areas which are cut 

 away from the margin of the canna leaves. The larva cuts a small, more or 

 less oblong strip about i in. long from the edge of the leaf and folds it over on 

 the lower surface. Within this nearly flat flap it lies concealed, feeding above 

 and below its retreat. As it increases in size the larva makes large incisions 

 in the leaf's edge with a correspondingly large flap, and later forms large tubular 

 retreats. A portion of the lower side of the leaf is at times folded over the 

 upper surface. On August 24, 1907, this pest was present in all stages in 

 great abundance on canna at Orlando, Fla. 



The species, which is of tropical origin, appears to be killed by severe frosts. 

 So far as can be learned it is known to exist permanently in the United States 

 only in the Gulf States, South Carolina, and Porto Rico. It also inhabits Cuba 

 and Jamaica, and in South America occurs as far south as Argentina. 



The eggs, which are laid singly and separately, sometimes in groups of from 

 5 to 7 on the undersurface of the leaves, hatch in from 4 to 6 days. The larva 

 is said to pass through 5 stages. The egg parasite Pentarthron minutum has 

 been observed to be an important enemy at Orlando, Fla. Handpicking has been 

 successfully practicetl in parks at Washington, D. C, as has the squeezing of 

 the leaves with gloved hands. Paris green and arsenate of lead with or with- 

 out Bordeaux mixture can be used with little danger of poisoning, although 

 their use appears to be undesirable where children have access to the plants. 



Combating the cochylis and eudemis moths, G. Dalmasso (Staz. Sper. Agr. 

 Ital., J,3 (1910), No. 7-9, pp. 593--61i5) .—This is a report of experimental 

 studies of remedial measures for these grapevine pests, conducted at ^Milan. 



A note on some mucedines observed on Cochylis ambig'uella, G. Fron 

 (Bui. Trimest. 8oc. Mycol. France, 21 {1911), No. //, pp. 1(82^^87, pi. i).— This 

 paper relates chiefly to Botnjtis bassiana {^Spicaria Mssiana) and Spicaria 

 verticillioiflcs n. sp. 



Observations on lamp traps for the cochylis moth, V. Vermorel (Prog. 

 Agr. et Vit. (Ed. VEst-Centre), 32 {1911), No. 29, p. 70; abs. in Internat. Inst. 

 Agr. [Rome], Bui. Bur. Agr. Intel, and Plant Diseases, 2 {1911), No. 7, pp. 1819, 

 1820). — In experiments conducted by the author an acetylene lamp was placed 

 in a tray at one efid of d large closed roo^i, 50 meters (164 ft.) long, and after- 



