abstracts: entomology 375 



mentally different and to resemble one another only superficially, in 

 the structure of the teeth. None of the known fossil forms of Eurasia 

 and America are considered as generically identical with the white rhi- 

 noceros, which is regarded by the author as a form of African derivation. 



E. H. 



ENTOMOLOGY. — Type species of the genera of ichneumon flies. 



Henry L. Viereck. Bulletin of the U. S. National Museum, 



No. 83. Pp. 1-186. January 31, 1914. 

 In the present work the author has listed the genera of the super- 

 family Ichneumonoidea and has given the original reference for each 

 genus, the number of species originally included, and the type of the 

 genus, or, if the genus was based on more than one species without 

 specifying a genotype, the reference to the work in which the type 

 was first fixed. Genera based on one species only are indicated as 

 monobasic ; wherever two or more were found to have the same species 

 as genotype the fact is indicated by the term isogenotypic. Manj^ 

 genera, when originally described, had no species included, in which 

 case there is given the citation for the first species subsequently in- 

 cluded; or, if more than one were simultaneously included, the number 

 is given and the treatment is similar to that of the other genera. 



In completing this work, it was found that certain generic names were 

 being used in a sense different from that of the original describer and 

 it thus became necessary to propose the following: Chorebidea for 

 Chorebus of authors, not of Haliday; Deuteroxorides for Xorides of 

 authors, not of Latreille; Diclosterocerus for Closterocerus Hartig, 

 not of Westwood; Helconidea for Helcon of authors, not of Nees; 

 Ischnopsidea for Ischnus of authors, not of Gravenhorst; Mesostenidea 

 for Mesostenus of authors, not of Gravenhorst; Myiarthridea for 

 Myiarthrus of authors, not of Foerster ; Pimplidea for Pimpla of authors, 

 not of Fabricius; Plectiscidea for Plectiscus of authors, not of Graven- 

 horst; Plesiophthalmidea for Plesiophthalmus Ashm., not of Foerster; 

 Porizonidea for Porizon of authors, not Fallen; Zavipio for Vipio of 

 authors, not of Latreille. J. C. Crawford. 



