98 MISCELLANEOUS FOREST INSECTS. 



SYNONYMY OF CERTAIN GENERA. 



By cross-reference in the index to the genotypes it was found that 

 certain genera were isogenotypic. In some of these cases new names 

 were needed. Ne\\^ names and certain synonymy are given below. 



THE SYNONYMS OF HARTIGIA SCHIODTE AND BOIE. 



Schiodte (Kroyers Naturhistorisk Tidsskrift, vol. 2, p. 332, 1838) 

 gave the name Ilartigia for a certain cephid insect which differed from 

 Cephus pygsemus in characters of the antennae. This species was not 

 named, however, so the genus was without standing until 1855, when 

 F. Boie (Stett. ent. Zeit., vol. 16, p. 49) stated that Astatus satyrus 

 was the species which Schiodte had. This gives Hartigia standing 

 and makes satyrus the type — the genus being monobasic. 



The genotypes of the genera Cerobactrus O. Costa and Cephosoma 

 Gradl are identical specifically with satyrus; consequently these 

 generic names fall to the older name Hartigia. The species satyrus 

 is also congeneric with Macrocephus ulmarise. Schlechtendal (=Ten- 

 thredo linearis Schrank) , so Macrocephus is a synonym of Hartigia. 

 The synonymy, therefore, is as follows : 



Hartigia Schiodte and Boie, 1855. 

 Cerobactrus 0. Costa, 1860. 

 Macrocephus Schlechtendal, 1878. 

 CepAosoma Gradl, 1881. 



PTERONUS Panzer=DIPRION Schrank. 



Panzer, in the original description of Pteronus, included the fol- 

 lowing species in the order named : Hylotoma frutetorum Fabricius, 

 Hylotoma dorsata Fabricius, Hylotoma juniperi Fabricius, Tenthredo 

 pini Linnaeus, and Tenthredo difformis Panzer. As the present-day 

 conception of Pteronus has to be changed, no species originally 

 included belonging to Pteronus Konow and authors, TentJiredo pini 

 Linnaeus has been chosen as the type, making Pteronus Panzer and 

 Diprion Schrank isogenotypic. Diprion is the older name, so 

 Pteronus Panzer is a synonym of Diprion Schrank. 



Diprion Schrank, 1802. 

 Pteronus Panzer, 1806. 



PTERONIDEA, N. N. FOR PTERONUS Konow and authors. 



Pteronus Panzer being a synonym of Diprion Schrank, Pteronus 

 Konow and authors is without a name. For this the name Pteron- 

 IDEA may be used. The type of Pteronidea is Nematus ventralis Say, 

 which is congeneric with Kono w's interpretation of Tenthredo myosotides 

 Fabricius. ' 



