112 ENTOMOLOGICAL SOCIETY 



superfamily characters ; while, on the other hand, certain frontal 

 and elytral declivity characters in the Scolytidse might be re 

 versed completely in the same genus and in allied genera. It 

 was evident, however, that secondary sexual characters were of 

 great taxonomic value when thoroughly studied and properly in 

 terpreted. It would appear that the primary sexual characters 

 of the reproductive organs, while showing striking specific dif 

 ferences in some particulars, often have constant characters in 

 general structure throughout the genus, while certain lines of 

 modification would serve to indicate primary and minor di 

 visions and their natural position in the classificaton. It should 

 be remembered that in both secondary and primary characters 

 similar body structure and similar stages of evolutionary devel 

 opment might bring about similar characters in very different 

 species, genera, and families. 



Mr. Schwarz showed a beautiful cluster of microgaster 

 cocoons from Cacao, Trece Aguas, in Alta Vera Paz, Guate 

 mala. They were remarkably fine in texture so that the co 

 coons in the mass could not be distinguished. The mass when 

 found was covered with ants of the genus Monomorium, and 

 the larva of which the microgaster was a parasite could not be 

 identified. The mass was afterward placed in a breeding cage 

 and about 200 parasites emerged. These were submitted for 

 examination to Doctor Howard, who pronounced them not the 

 microgaster, nor even a secondary, but a tertiary parasite. 



Doctor Hopkins exhibited specimens of the scolytid beetle 

 Pagiocerus rhnosus Eichh. and of its work in fruit of the red 

 bay (Persea barbonia) and in the pulp and seeds of custard 

 apple (Anona glabra and Anona cherimolia) , and presented the 

 following note : 



A GENUS AND SPECIES OF SCOLYTIDJE HERETOFORE 

 UNRECORDED FROM THE UNITED STATES. 



By A. D. HOPKINS. 



In April, 1905, the Bureau of Entomology of the U. S. 

 Department of Agriculture received specimens of Pagiocerus 

 rimosus Eichh. from Prof. A. L. Herrera, the entomologist of 



