— 103— 



form. Further study with abundaut material has conviuced me that 

 it is chstinct from A. cardui Linn., to which A. chrysanthemi Koch, 

 has been reduced. So far as I have been able to observe during 

 four seasons spent in the orchards, this aphis is confined exclusively 

 to the peach. I have never found it on the roots or tops of orchard 

 weeds, or even in neighboring cherry orchards. Myzus cerasi^i&^xs, 

 from it in half a dozen important particulars, e. g. Antennae set on 

 conspicuous frontal tubercles, gibbous on inner face, and only about 

 one-half as far apart, joints not tuberculate, except iii, which is only 

 slightlv so; less than one-half as many sensoria on iii, five in one 

 row only, none on iv, one on v; stigma narrower; no button-like 

 tubercle on back of thorax; femora more inclined to be hairy; cor- 

 nicles cylindrical and twice as long; style longer and distinctly cone- 

 shaped. In the apterous form the dorsum is also minutely punctate 

 throughout, like shagreen. 



This insect is an Aphis rather than a Myzus, belonging most 

 properly, I think, to that section of the genus classed by Prof. 

 Oestlund as Aphis nectarophorini. 



Among peach growers it is generally known as "the black 

 aphis." It may, therefore, appropriately bear the name of Aphis 

 persiccs-niger, especially since all the mature forms yet discovered 

 are shining as well as black. 



(To be continued.) 



Mr. Liebeck, in "Entomological News" No. 4, gives an inter- 

 esting account of how he makes use of a white dog to attract Cole- 

 optera in early evening. A collector of no mean standing tells of 

 a still more effective method which accident disclosed to him. It is 

 his practice to take a stroll th-rough the fields with his wife on sum- 

 mer evenings, and usually his beating net accompanies him. One 

 evening, returning from a stroll, a light rain induced the lady, to 

 protect the makeup of her hair, to turn up her skirt over her head, 

 exposing the white petticoat. Soon our friend's attention was at- 

 tracted by numerous black spots on this white surface, and investi- 

 gation showed that they were Coleoptera, which w^ere promptly 

 bottled, and many of which proved good things. Of cQurse it is 

 not absolutely necessary that the white surface should be either a 

 dog or a petticoat, but in default of anything better, either will 

 answ'er as an attraction. 



