Ixviii Trans. Acad. Sci. of St. Louis. 



of the potato beetle, Doryphora 10-lineata, which is being pierced by 

 an aphid. 



The Section held its field meet at Fenton, Mo., July 17-18, which 

 was attended by five members and two guests. 



At the September meeting Mr. Philip Rau read a paper entitled 

 "Duration of Life of Samia cecropia." It was agreed that the paper 

 be presented to the Academy for publication which, we are pleased 

 to note, has since been accepted by the Council and is now in the 

 hands of the printer. At this meeting several members reported 

 having collected and prepared a lot of material for the museum col- 

 lection to be placed there upon receipt of cases from the Academy. 



At the October meeting Prof. J. F. Abbott told of his experiences 

 in Manchuria during the past summer and Mr. Hermann Schwarz 

 reported on a recent collecting trip made through St. Louis and St. 

 Charles Counties, Missouri, illustrating same with a number of stere- 

 opticon views made from photographs taken by himself. 



At the November meeting Dr. Geo. W. Bock read a paper on 

 "Spiders," supplemented by a number of excellent drawings showing 

 the anatomical structure of these arthropods. Mr. Ernest Schwarz 

 showed catocalae eggs deposited in bark and explained that the eggs 

 of this genus of moths are not always laid on the food plant of the 

 larvae. The subject of relation of insects to their food received con- 

 siderable attention. 



At the December meeting Mr. J. T. Monell read a very instructive 

 paper on the "Homoptera," showing in connection a series of micros- 

 copic mounts of aphids. A letter from Dr. Wm. Barnes of Decatur, 

 111., was read, in which he invited the entomologists of St. Louis to 

 meet with those of Chicago at Decatur, Jan. 16th, and it was agreed 

 that as many as can, join in making this meeting productive of good 

 results. 



The average attendance for the last six meetings was 6 members 

 and 3 visitors. 



The Section at present consists of ten members. 



Respectfully submitted, 

 (Signed) Hermann Schwarz, 



Secretary of the Section. 

 Issued, July 5, 1910. 



