LIST OF DIPTERA. 109 



Subula Megerle, Meig. Zweifl. iii. 15 ; Macq. 



Nemotelus, p., Degeer. 



Xylophagus, p., Meig. ; Fabr. ; Latr. ; Zett. 



Mediastinal vein ending at very much beyond half the length 

 of the wing. Subcostal ending near the radial, which extends to 

 beyond three-fourths of the length. First branch of the cubital 

 curved, moderately long, ending at half the length between the 

 radial and the second branch, which ends at a little in front of the 

 tip of the wing. Four complete externo-medial veins. Subanal 

 vein joining the anal close to the border of the wing. Median 

 veinlet distinct, but very short. Discal areolet hexagonal, about 

 thrice longer than broad ; its sides nearly parallel. 



Europe. 



1. Subula maculata. 



Nigra ; antenna ferruginece, basi fusees ; thorax flavo vittatus el 

 quadrimaculatus ; abdomen basiflavo bimaculatum, segmentis 

 flavo cinctis ; pedes flavi, nigro cinctis ; alee hyalince. 



Xylophagus maculatus, Fabr. Sysi. Anil. 65, 3. Fall. Dipt. Suec. 



13, 2. Latr. Gen. Crust, iv. 272 ; Cons. Gen. 442. Meig. 



Zweifl. ii. 13, 4, pi. 12, f. 15. Steph. III. Brit. Ent. Haust. 



pi. 46, f. 3. Zett. Dipt. Scand. i. 128, 3. 

 Subula maculata, Macq. Hist. Nat. Dipt. i. 230, 1. 



a. England. From Mr. Stephens' collection. 



2. Subula varia. 



Nigra ; antennae fuscce, subtus flavo fasciatce, capite longiores ; 

 scutellum flavum, lateribus nigris ; abdomen incisuris flavis ; 

 pedes flavi ; alee limpidce. 



Xylophagus varius, Megerle; Meig. Zweifl. ii. 14, 5; vi. 319. 



Roser, Ann. Nat. Hist. Soc. Tubing, ii. 1828. Ferussac, Bull. 



Sci. Nat. 1829. 

 Subula varia, Macq. Hist. Nat. Dipt. i. 230, 2. 



a, b. England. 



