58 EXPERIMENT STATION RECOED. [Tol.36 



ducted with insecticides. Various wild solanums also serve as food plants for 

 the species, which is quite widely distributed over the more southern portions 

 of the United States. 



In the laboratory over 200 eggs were deposited by a single female, 12 being 

 laid in one day. They are largely placed upon the underside of the leaves but 

 may be found on other parts of the plant. In June a period of from 4 to 5 

 days was required for their incubation. The five larval instars of 43 individuals 

 observed required from 12 to 20 days for development during June and July. 

 During these months the pupal period occupied from 2 to 7 days. The winter 

 is passed in the adult stage. It is pointed out that under favorable conditions 

 five generations may develop during the year at Baton Rouge. 



Experiments with lead arsenate and zinc arsenite indicate that the pest can 

 be kept under control through the use of arsenicals. 



The fruit-tree leaf Syneta, spraying data, and biological notes, G. F. Moz- 

 NETTE (Jour. Econ. Ent., 9 (1916), No. 5, pp. 458-461, pis. 2). — Syneta albida is 

 said to have been the source of considerable injury to prunes and cherries in 

 the Willamette Valley of Oregon in the spring of 1916. 



The reflex " bleeding' " of the coccinellid beetle, Epilachna borealis, N. E. 

 MclNDOO (Ann. Ent. Soc. Amer., 9 (1916), No. 2, pp. 201-223, figs. 21). 



Notes on the habits of a dangerous genus of weevils, W. D. Piebce (-Jour. 

 Econ. Ent., 9 (1916), No. 4, PP- 4^4-4^1, figs. 4)- — This paper deals with weevils 

 of the genus Polydrusus. Two European species have recently been found in 

 the United Stales and four other species are apparently native or have been 

 long established in this country. 



The imported poplar root weevil (P. impressifrons) is already doing consid- 

 erable damage in New York and Connecticut. The author gives descriptions 

 of its several stages and includes notes by Parrott on its habits in New York 

 State. The imported fruit-bud weevil (P. sericeus), two speciraents of which 

 have been collected in Marion County, Ind., is in Italy quite injurious as an 

 adult to the buds and foliage of fruit trees, especially the pear. 



Sporotrichum globuliferum, a natural enemy of the alfalfa weevil, L. P. 

 RocKwooD (Jour. Evnn. Ent., 9 (1916), No. 5, pp. 493-499). — This entomogenous 

 fungus is said to develop spontaneously as an infectious disease of the alfalfa 

 weevil on the bench lands of the Snlt Lake Valley, in the early spring. Labo- 

 ratory experiments are reported. 



Report from the division of bees for the fiscal year ended March 31, 1915, 

 F. W. L. Si-ADEN ET Ai,. (Canada Expt. Farms Rpts. 1915, pp. 991-1014, pis. S). — 

 The work of the year at the Central Experimental Farm at Ottawa and at 

 the branch stations is first reported upon in a general way by the apiarist, 

 F. W. L. Sladen (pp. 993-996), who touches upon a number of problems that 

 confront the beekeeper in Canada. It has been demonstrated that bees can be 

 kept at all of the farms and stations, though losses of bees, sometimes heavy, 

 have occurred during the winter. A considerable measure of success has been 

 met with in the wintering of bees outdoors at Ottawa in cases packed with 

 insulating material and sheltered from the wind. Attempts at wintering in 

 this manner at several of the stations are said to warrant a further trial. 

 Investigation has shown, with the po.'^sible exception of the farms on the 

 prairie and in the dry belt of British Columbia, that the bulk of the surplus 

 honey is generally gathered from less than one-half dozen species of plants 

 and in some cases from only two or three, the quality of the honey from these 

 plants being excellent. A change to Italian bees In 1910 at the Central Farm, 

 in order to control the European foul brood, resulted not only in the suppression 

 of the disease but in a substantial increase of the honey crop. 



