OF WASHINGTON, VOLUME XVIII, 1916 33 



Synonyms of Medius: Nervus medius Andre 1879 (in text but not fig.). 

 MedialisKietter 1912. Median Fernald 1906. MedialaderFriese 1911. 

 Externo medial nervure -Cockerell and Robbins 1910. Cu-\-m Mac- 

 Gillivray 1906, Fernald 1906. Cii+Cui Bradley 1908. Cu Comstock 

 and Needham 1898. 



Synonyms of medius plus base of discoideus: Vena media Hartig. 

 Median vein Cameron 1882, Marlatt 1894, Morley 1903. Mediana 

 Dalla Torre and Kieffer 1910. Nervure mediane Lacordaire 1834, Andre 

 1879. Medialnerv Schmiedeknecht 1907. 'Vena externo-me'dialis Dahl- 

 bom 1845. Externo-median vein Cresson 1887. Exter no-median nervure 

 Shuckard, Kirby. Nervure externo-mediane de Romand. Deuxieme ner- 

 vure humerale Wesmael. Nervus internus Latreille. Nervure brachiale 

 Jurine. Nervus anterior -Haliday. Costa media Mayr. Mittelrippe 

 Mayr. Premiere nervure intermediate Lepeletier. Praebrachialis- Hali- 

 day. Praebrachial nervure Marshall 1885. Nervus submedialis Schenck. 

 Cubitus Thomson, Schmiedeknecht 1907 for Ichneumonidae and Braco- 

 nidae. Nervus cubitalis Thomson. Nervus radians Dahlbom. 



Synonyms of medius plus discoideus (part) plus subdiscoideus: Vena 

 media Foerster 1877. Medius Konow 1901, Enslin 1912. Medialaare 

 Nielsen and Henriksen 1915. 



Discoideus. Fig. 1, PTI'PS; fig. 2, JH 1 !! 1 ; figs. 5, 6, 8, J'PS; fig. 7, J 1 ? 1 ; 

 fig. 9, GTFPS; fig. 10, F'PS. 



Usually the continuation of medius beyond the basal to the end 

 of the first discoidal cell where it becomes transverse and extends 

 to the posterior margin of the wing. Exceptions are found in figs. 

 7 and 9 which will be best understood by reference to these 

 figures. This transverse portion has often been called a cross- 

 vein and has been named (2nd transverse median Cameron 1882; 

 Areal nerv Konow 1901; etc.), while the basal section has been 

 designated as nervure parallele by Wesmael and others. As used 

 here the term was first restricted by Fernald 1906. 



Synonyms of discoideus: Discoidal rein Fernald 1906. 

 nervure Cockerell and Robbins 1910. Discoidalis Kieffer 19 !'_'. 



Synonyms of first portion of discoideus: Xcrrnrc parnlltli 

 Nervus analis Haliday. Nervure discoidalede Romand. Discoidalm rv 

 Zaddach. Subdiscoidal nervure Shuckard. 



Subdiscoideus. Figs. 1, 2, 5, 8, PX 1 ? 1 ; figs. 6, 9, 10, PP 1 . 



The third apical longitudinal vein from metacarpus extending 

 from the transverse section of discoideus towards the apical mar- 

 gin of the wing and forming the posterior boundary of the second 

 and following discoidal cells, usually subparallel with cubitus. 

 In fig. 7 the apical part of discoideus may be homologous with 

 subdiscoideus, the transverse part of discoideus being wanting. 



