THE GENOTYPES OF SAWFLIES AND WOODWASPS. 99 



THE SYNONYMS OF PLATYCAMPUS SCHIODTE. 



Hartig, in 1837 (Fam. Blatt. Holzwesp., p. 184), described the 

 subgenus Leptopus for a new species, Tiypogastricus, which has proved 

 to be the same as Tentliredo luridiventris Fallen (1808). The name 

 Leptopus had already (Latreille, 1809) been used for a genus of 

 Hemiptera. Schiodte (Magasin de ZooL, vol. 9, p. 20, footnote, 1839) 

 proposed the name Platycampus for Leptopus Hartig. 



E. Newman (Ent., vol. 4, pp. 215-217, 1869) describes the laiva and 

 adult of a sawfly under the name Camponiscus Tiealsei. The adult is 

 very poorly characterized and unrecognizable, but in 1873 (Ent. 

 Monthl. Mag., vol. 10, p. 84) P. Cameron says he has reared the same 

 larva as Newman describes, and that the adult is the same as Nematus 

 {Leptopus) Tiypogastricus Hartig. This synonymy establishes the 

 genus Camponiscus and makes it the same as Leptopus Hartig, the 

 two genera being isogenotypic. 



F. W. Konow (Genera Insectorum, Fasc. 29, p. 48, 1906) uses the 

 name Leptocercus Thomson (a changed spelling for Leptocerca Hartig) 

 for this genus, but in this he is wrong, because Thomson divides 

 Leptocercus into Leptocercus s. s., which contains Tentliredo alni 

 Linnaeus, Tentliredo rufa Panzer, and Leptocercus nigriceps Thomson, 

 and is Hartig's genus Leptocerca. The second division of Thomson's 

 Leptocercus is Leptopus Hartig and contains Tentliredo luridiventris 

 Fallen. The Leptocercus Thomson s. s. is Leptocerca Hartig, not 

 Leptopus Hartig as Konow would have it. 



The synonymy of this group is as follows: 



Platycampus Schiodte, 1839. 



Leptopus Hartig, 1837 (non Latreille, 1809). 



Camponiscus E. Newman, 1869. 



Leptocercus Konow, 1906 (non Thomson,' 1871). 



CRCESUS Leach=NEMATUS Jurine. 



Latreille (Considerations Generales, p. 435, 1810) fixed the. type of 

 Nematus as Tentliredo septentrionalis Jurine. Nematus septentrionalis 

 Jurine is the same as Tentliredo septentrionalis Linngeus. Leach (Zool. 

 Misc., vol. 3, p. 129, no. 1, 1817) based his genus Croesus on Tentliredo 

 septentrionalis Linnaeus; so Crcesus Leach is a synonym of Nematus, 

 the genera being isogenotypic. 



Nematus Jurine, 1807. 

 Croesus Leach, 1817. 



NEMATINUS, N. N. FOR NEMATUS Konow. 



The fixing the type of Nematus as Tentliredo septentrionalis Linnaeus 

 and making Crcesus synonym of it necessitates a new name for 

 Nematus of Konow and authors. For Nematus Konow and authors 

 the name Nematinus may be used. 



The type of Nematinus is Tentliredo ahdominalis Panzer. 



