BY FREDERICK A. A. SKUSE. 725 



EXPLANATION OF PLATE. 



Plate XL 



Fig. 1. Alar-venation of Sciara Macleayi. 



Fig. 2. ,, „ sedula. 



Fig. 3. ,, ,, cemula. 



Fig. 4. ,, Trichosia Master si. 



Fig. 5. Diagram illustrating 'the terminology for the veins and cells as 

 applied to the Sciaridfe. 



[TAe dextral column gives the German eqtdvalents employed by Wimiertz, 

 (Beit, zu einer Mon. der Sciarinen, 1867 J], 



Veins. Adern. 



Costa (v. costalis). a, e, g. Eandader. 



Transverse shoulder-vein (v. transversa humer- ^ 



(i^is). b. Intllfsader. 



Avixilisiry (v. auxiliaris). c. J 



1st longitudinal fv. long. Ima). a, e. Unterrandader. 



Q,vos,s-\e\n (v. transvers marginalis). d. Querader. 



2nd longitudinal (v. long. 2da). a, f. Mittelader + Ellbogenader. 



Anterior branch (v. long. 2da ramus an- "J _, , . , , 



V Brachialader. 

 teriorj. s. J 



3rd longitudinal (v. long. 3a). n, p, k. Mittlere Scheibenader. 



Anterior branch ^j;.?o?((7. 5a r«7?i?«.s anterior), h. Obere Scheibenader. 



4th longitudinal (v. long. J^a). a, m. Hinterader. 



Anterior branch (v. long, ^a ramus anterior). 1. Untere Scheibenader. 



5th longitudinal (v. long. 5a). n. ( Rudi- "| . , , , 

 military), J 



