n monthly proceedings 



January 10, 1879. 

 Director Dr. LeConte in the chair. 

 The publication committee reported favorably the followins: papers 

 presented at the last meeting for publication in the Transactions of 

 the American Entomological Society : — 



" Descriptions of new species of North American Hymenoptera, 

 by E. T. Cresson." 



" Catalogue of North American Apidae, by E. T. Cresson." 

 Dr. Horn exhibited two Lepidopterous insects from Costa Rica of 

 widely separated affinities, showing between themselves a really wonder- 

 ful mimicry, not only in color but also in form; so close indeed was 

 the resemblance that either might have been placed among a number 

 of specimens of the other, and, without a careful glance, would not 

 be thought distinct. The one was a Heliconia, the other a Callimorpha. 

 The group to which the former belongs is rarely or never attacked by 

 birds, and the mimicry belongs to the "protective" class. In regard 

 to matters of "mimicry" so called, Dr. Horn thought the idea had 

 been and is pushed too far. Many cases of this kind should be con- 

 sidered Nature's reproduction of an idea, so to speak, which had been 

 developed elsewhere, and that such instances do occur among the 

 myriads of insects is not very remarkable. Instances of equally 

 wonderful " mimicry" could be cited among Coleoptera where it is not 

 protective or anything else than a mere close resemblance, for example 

 Amphizoa from California, and Nyctlpetus from South America. 



The following additions to the Library of the American Entomo- 

 logical Society were announced : 



Proceedings of the Boston Society of Natural History, vol. xis, 

 part 4. From the Society. 



Proceedings of the Zoological Society of London, 1878. From 

 the Society. 



Bulletin of the Brooklyn Entomological Society, Nos. 2 to 7. 

 From the Society. 



American Naturalist, vol. xiii. No. 1. From the Editor. 



Le Naturaliste Cauadien, vol. x, No. 12, vol. xi, No. 1. From 

 the Editor. 



Field and Forest, vols, i, ii, and iii. By purchase. 



The Fossil Insects of the Green River Shales, by Samuel H. 

 Scudder. From the Author. 



Compte-Rendu Societe Entomologique de Belgique, Serie ii. No. 57. 

 From the Society.. 



