OF WASHINGTON. VOLUME XIV, 1912. 177 



Promethus Thomson: No type designated. Type (Bassi< 

 Promethus sulcatorGr&venhorSb, by present designation. This 

 genus is synonymous and isogenotypic with Promethes (Foer- 

 ster) Woldstedt, which has priority. 



Mr. Morley includes Lwpsis Foerster as a synonym of 

 Promethus Thomson and is thu.- the first person to include 

 species under this genus. I select Promcthus <tt/<ra/W'Graven- 

 horst) as type. Li<>p>i.- Foer.-ter; Morley thus becoming i- - 

 genotypic with Promelhcs ' Fo'-r-tt-rj Woldstedt. 



Smicroplectrus Thomson: Xo type designated. Type /. - 

 enterns) Smicroplcctius jucundus 'Holmgren), by present 

 designation. 



Stenomacrus (Foer-n- n Thomson: Xo type designated. 

 Type Orthocentrus silratiats Holmgren, by present designa- 

 tion. 



Trematopvgus Holmgren: No type designated. Type Tre- 

 matopygus ruficornis Holmgren, by present designation. 



Tncfwmastix \'ollenhoven Bioblapsis (Foerster; Dalla 

 Torre: The latter genus has priority. 



Zootrephes Thomson: Xo type designated. Type Bu$ms 

 holmgreni Bridgrnan, by present designation, which Morle% 

 holds to be the same as ( Bassns) Zootrephus ruli^entrii 

 ( iruvenhorst. Zootrephus Thomson must be replaced by Z<>u- 

 trephes (Foersterj \\'oldstedt, the genotype of which lattei 

 is regarded as congeneric with the genotype of Zootrephus 

 Thomson. 



Fortunately, the fact that Mr. Morley did not concern him- 

 self with the foundation stone or genotype of each genus us-d 

 by him does not change the status of his concept- in many 

 cases, ;t> quite frequently the constituents of his generic con- 

 cepts include the genotype of the genus involved. However. 

 in such a painstaking effort as this, one would look for the 

 finality that can come only through the consideration of geno- 

 types, especially in view of the fact that some of the earliest 

 writers from Latreille on recognized the necessity of definite 

 premises upon which to argue the case of the ichneumon flies. 



The compilation of biological records i.< apparently exhaus- 

 tive and will serve a useful purpose in the hands of the field 

 worker and economist. 



The classification of the Tryphoninse as here set forth is 

 admittedly no improvement over Holmgren's >y>tem. except 

 in the acceptance ( ,f an additional tribe based on pectination 

 of claws. 



Segregates of some of the older, heterogeneous genera, ac- 

 cepted by colleagues of the author, are suppn-.-id. as in the 



