97 



The report of the committee was unanimously accepted, and the 

 secretary was instructed fco cast the ballot for the Association. 



The secretary presented the name of Mr. E. (r. Titus as a candidate 

 for membership in the Association. This name was proposed by Mr. 



Webster, who explained somewhat at length the training which Mr. 

 Titus had had. the work he had done and his eligibility to member- 

 ship. After some discussion by members Mr. Titus was elected to 

 active membership. 



There being no further business before the Association, the regular 

 program was resumed: 



NOTES FROM DELAWARE. 



E. D wight Sanderson, Newark^ Del. 



At the last meeting of the entomological section of the Association 

 of Agricultural Colleges and Experiment Stations the writer described 

 the differences between the more common species of aphis affecting 

 the apple and pear, and a further report concerning them will be found 

 in the 13th report of the Delaware Agricultural Experiment Station, 

 now in press. Our most common species, usually written Aphis mali 

 Fitch, is entirely distinct from A. mali of Fabricius. which is a syno- 

 nym of A, pomi De G., and the name A. mali must therefore be 

 abandoned. I have consequently described Fitch's species as Aphis 

 fitchii n. sp., in recognition of his very careful description of it. This 

 name must be regarded as somewhat tentative, however, as Prof. 

 Slingerland is of the opinion that Aphis annum Oestlund will probably 

 prove to be the same species, in which case it would have priority, 

 and there are certain European species which further study may show 

 to be identical. Meantime the name jitc/t a will clearly designate the 

 species discussed, and the confusion formerly existing will be obviated. 

 This spring I again attempted to breed this aphid in the msectary 

 upon wheat and various grasses, but seemed to fail entirely, none 

 being observed to reproduce on them, either when inclosed in glass 

 cylinders or when free. I also carefully examined a number of wheat 

 fields and various pieces of grass at the time the aphides were migra- 

 ting from the apples without finding them on the grass. Having 

 found no aphides on the grasses in the insectary up to June 1. they 

 were not examined again until June 25, when I found one of them 

 well covered with an elongate yellowish- white aphis which had caused 

 the leaves to wilt and become streaked with white. These aphides 

 were decidedly elongate, with cornicles and cauda concolorous with 

 body, cornicles tipped with black, antennae and eyes black, and some- 

 times with a greenish and sometimes a reddish splotch at the bases oi 

 the cornicles, but usually without such marking. A few pupa 1 were 

 observed but no winged females. It is possible that this may be the 

 same species as the spring form on the apple, as it has certain "ear 

 7796— No. 37—02 7 



