320 DURHAM DIPTERA. 



XXXVIII. 526. 



16 (15). Femora not ringed. 



17 (18). A black spot between the base of the antennae and 



the eyes. 

 2331. Tetanocera fiunctulata, Scop. 

 Hesleden, 1 $, August, 1902. 



18 (17). In addition to the lower orbital spots, another pair of 



black diagonal spots above. 



(2232. cheer ophyli, F.) 



527. Limnia, Dsv. 



1 (2). Third antennal joint with a tuft of black bristles at 



the end. ( 2 333« marginata, F.) 



2 (1). Third antennal joint bare at the end. 



3 (6). X.5 2 distinctly bent; hind femora without thorns 



beneath. 



4 (5). Dorsum grey with a broad orange stripe on the 



middle and two quite at the sides ; X.5 2 once bent, 

 bow-shaped. ( 2 334« unguicornts, Scop.) 



5 (4). Dorsum yellowish grey with two pairs of stripes of 



brown spots ; X.5 2 twice bent, waved. 

 2335. Limnia rnfifro?is, F. 

 Hesleden, 5 $ and 3 ?, July-August, 1899-1900, &c. 



6 (3). X.5 2 quite straight ; hind femora with thorn-like 



bristles beneath. ( 2 336- obliterata, F.) 



528. Elgiva, Mg. 



1 (4). At least four brown spots along V.4. 



2 (3). Dorsum orange. 



2337. Elgiva al bis eta, Scop. 

 Hesleden, 1 $, July, 1902. 



3 (2). Dorsum blue-grey. 



2338. Elgiva dorsalis, F. 

 Hesleden, 1 $, August, 1900. 



4 (1). At most three brown spots along V.4. 



