Ninth Report of the State Entomologist 441 



received on small twigs, were of an unusually elongate shape. Spraying 

 with kerosene emulsion soon after they are hatched, will kill them. Other 

 remedies are application of "heavy -oil," soap-suds and carbolic acid, and 

 other means mentioned in the Country Gentleman, for March 1, 1888, p. 169. 



The Harlequin Cabbage-Bug. (Country Gentleman, for June 9, 

 1893, Ivii, p. 458, c. 1, 2—27 cm.) 



The conspicuous and peculiar markings of this insect, the Murgantia 

 Mstrionica (Halm.), received from Woodbury, N. J., have given to it its 

 specific and popular name. It feeds on most of the Cruciferce; its distribu- 

 tion is noticed: now for the first time received from New Jersey. Recom- 

 mendations for destroying it are: sprinkling with hot water; trapping with 

 leaves placed on the ground; burning the rubbish of the fields; destroying 

 the hibernated insects while ovipositing in the early spring, and crushing the 

 eggs. The insect develops rapidly — may mature from eggs within three 

 weeks. 



[Seepages 315-317 of this Report (ix).J 



The Pear-tree Psylla. (Science for June 17, 1892, xix, pj). 343, 

 344 — 30 cm.) 



Recent injuries to pear-trees from two pests, Diplosis pyrivora and Psylla 

 pyri: when they were introduced: injuries from the latter in the Hudson 

 river valley: wiiat the insect is: when it appears in its several stages: should 

 not be hard to control: may be killed by spraying when first hatched, and 

 even after it is winged, with kerosene emulsion: theVermorel nozzle pre- 

 ferable against the winged insect, and how to use it. 



[ See extended notice in pp. 317-329 of this Report (ix).] 



The Apple-tree Tent-Caterpillar. (Country Gentleman, for June 

 23, 1892, Ivii, p. 492, c. 1—11 cm.) 



In reply to inquiry from Boston, Mass. , for preventive means against cater- 

 pillars which have defoliated fifty apple-trees: the insect, Clisiocampa 

 Americana Harris, is easily controlled by two methods — either by collecting 

 the egg-belts while the trees are leafless and burning them, or by destroying 

 the nests with the contained larvee as soon as they can be discovered in early 

 spring, during the cool part of the day. 



Aster and Lily Pests. (Country Gentleman, for June 23, 1892, 

 Ivii, p. 492, c. 1—12 cm.) 



The " minute white objects" associated with myriads of small red ants 

 (specimens not submitted), covering the roots of astera in Riga, N. Y., are 

 probably a species of plant-louse, and perhaps the Aphis Middletonii of 

 Thomas (8th Illinois Report). The "worms" boring into the stalk of Ulies 

 below the ground, judging from the brief description sent, are one of the 

 Myriapods or " thousand-legged worms." These may be kiUed by lime-water 

 or nitrate of soda in solution. For the Aphides, withdraw^ the ground and 

 apply strong soap-suds, or tobacco water or pyrethrum water, or pour hot 

 ■water on the ground about the plants. 



[Published in pp. 371, 872 of this Report (ix).] 

 1893. 56 



