152 Annals Entomological Society of America [Vol. VI, 



/.■ T. Abbott, Washington University: The Strigil in Corixi- 

 dce and its Probable Function. Read by Title. 



Edna Mosher, University of Illinois: The Anatomy of Some 

 Lepidopterous Pupce. (Presented by Mr. Alvah Peterson). 



Figures of pupae of three species were shown and described. Sthen- 

 opis tliule, Archips argyrospila, and Lyniantria leucostigma. Figures of 

 the ]ju]jal cases of each of these species were shown, also figures of the 

 pupa\ with the cases dissected away so as to show the parts underneath. 

 Considerable difificvilty has been encountered in homologizing the pupal 

 structures from the external appearance particularl}^ in the case of the 

 fixed parts of the head and the ap]3cndages of the head and thorax. 

 The leg cases were shown to be a frequent source of error. In.stead of 

 showing externally only the cases for the tibiae and tarsi, as Scudder 

 claims is the case in the butterflies, certain forms show the femur cases 

 and either the whole or part of the coxal cases in certain pairs of legs. 

 What Packard calls the para:clypeal pieces, were shown in these forms 

 to contain functionless mandibles which had their distal margins 

 toothed in the case of Lyniantria. 



This detailed anatomical study is to be made the basis for a phy- 

 logenetic and taxonomic arrangement of the Le|:)idoptera based on an 

 examination of the characters of the pupge. 



Charles K. Brain, Ohio State University: Some Anatomical 

 Studies of Stomoxys calcitrans Lin. (Introduced by Professor 

 Herbert Osborn). Printed in part in December Annals. Part 

 II will appear in June Annals. 



5. W. Bilsing, Ohio State University: Observations on the 

 Food of Spiders. (Introduced by Professor Herbert Osborn) 



Spiders are kn6wn to feed upon insects but exact records of kind 

 and quantity of food for particular species are very meager. Extended 

 observations and records were made during the summer and fall of 1^)12 

 and data from some of these are presented. As an example of the 

 records given, grasshoppers constituted 39% of the food of Miranda 

 aurantia, 59% of the food of A galena ncevia and 22% of the food of 

 Aranea trifolium during the period under observation. 



Herbert Osborn, Ohio State University: Observations on 

 Insects of a Lake Beach. 



The Insect fauna of the Cedar Point Beach of Lake Erie is discussed 

 with reference to its derivation and adaptation for the conditions 

 presented. The in.sect drift, the migrant and tlie resident members of 

 the association are separated and records of species in each group given. 



C. II. Tyler-Townsend, Government Entomologist of Pern: 

 The Species-Status and the Species-Concept. Read by Title. 



C. H. Tyler-Townsend, Government Entonwlogist of Peru: 

 A New Application of Taxanomic Principles. Read by Title. 



