OF WASHINGTON, VOLUME XVIII, I'.U'i 29 



gastra, costa and subcosta are combined, or nearly, and in these 

 cases the combined veins are known as costa. Most authors have 

 considered that the costa was the entire vein or the anterior mar- 

 gin of the wing (costa + stigma + metacarpus). 



Synonyms of costa: Costa Marshall 1885, Morley 1903, MacGillivray 



1906. Costalader Szepligeti 1904. Costalis Kieffer 1912. C Comstock 

 and MacGillivray 1898, MacGillivray 1906, Fernald 1906, Bradley 1908. 



Synonyms of costa + metacarpus: Costa Latreille, Thomson, Cameron 

 1882, Cresson 1887, Konow 1901, Morice 1903, Fernald 1906, Schmiedeknecht 



1907, Enslin 1912. Costal vein^-Norton 1867, Marlatt 1894. Costal nervnn 

 Kirby, Shuckard, Cockerell and Robbins 1910. Nervure costal Lacor- 



daire 1834, Andre 1879, Berthoumieu 1904. Nervure costalis Schenck, 

 Fallen, Dahlbom, Haliday, Andre 1879. Costalaare Nielsen and Hen- 

 riksen. Costa marginalis Mayr. Vena marginalis Foerster 1877. Rad- 

 ius Jurine, Hartig, Saussure 1852. Radius superior Lepeletier. Prc- 

 miere nervure humeralc Wesmael. Randader Zaddach. Randnerv- Zad- 

 dach. Randrippe Mayr. Laracinc Tosquinet 1896. Le cote Saussure 

 1852. 



Intercalates. Fig. 1, XX 1 . 



A longitudinal vein parallel with the anterior margin of the 

 wing, occurring in the costal cell of some of the more generalized 

 wings of Chalastogastra; lying between costa and subcosta with 

 its basal end at the base of the wing and its apical end either on 

 costa or subcosta or branched, one branch terminating on costa 

 and the other on subcosta. 



Synomyms: Vena inter calaris Foerster 1877. Nervus intercalaris 

 Andr6 1879. Nervure intercalate fourohue Andre 1879. Inlercostalader 

 Konow 1901, Enslin 1912. Inttrcostalaare- Nielsen and Henriksen 1915. 

 Nervus mediastinus Thomson. Sc Gomstock and Xoedham 1898, Mac- 

 Gillivray 1906. 



Intercosta. Fig. 2, YY'. 



A cross-vein in some Chalastogastra dividing the costal cell. 

 usually at about its apical fourth and having its anterior end on 

 costa and its posterior end on subcosta. 



Synonyms: I/iti'i-coxtulm rr Konow 1901. Inter cos talqiu r>n-rr Enslin 

 1912. Intercostaltvaeraart Nielsen and Henriksen 1915. 7Vf//.sT<r.sr coxt<il 

 vein Marlatt 1894. Vena transverso-submarginalisFoeTSteT 1877. Ner- 

 vus transverso-brachiatis Andre 1879. 



Subcosta. Figs. 1, 2, EGB; tig. 7, EHB; figs. 8, 9, KB; fig. 10, EE>. 



Tin- first basal longitudinal vein from cosla. (when intercalaris 

 is wanting) and para! lei with il , extending from b;ixe of wing to 



