1892.J 233 



ANNOTATED LIST OF BRITISH TACHINIIDM. 



BY E. II. MEADE, 



{Continued from page 212). 



The six following genera contain small shining black species, with 



closed and pedunculated first posterior wing cells, naked eyes, and 



facialia, and short antennae, which are so much alike that it is difiicult 



to find any good diagnostic characters, and to place them in satisfactory 



groups ; I shall, therefore, arrange them in another short analytical 



table before describing them.* 



1 (10) Alulfe small, or of moderate size. 



2 (8) Outer cross vein placed nearly in the centi'e between the inner cross vein 



and the bend of the fourth vein. 



3 (4) (5) Cheeks (not facialia) ciliated with a row of fine sette, continuous with 



the fronto-orbital bristles Clista, Mgn. 



4 (3) (5) Cheeks armed on their lower part with a row of strong bristles... 



Rhinophora, Mgn. 



5 (3) (4) Cheeks bare, or having only a few scattered fine hairs. 



6 (7) Chin large and setose FoRTisiA, End. 



7 (6) Chin small and smooth. 



8 (2) (9) Outer cross vein much nearer to the inner one than to the bend of the 



fourth vein Plesina, Mgn. 



9 (2) (8) Outer cross vein nearer to the bend of the fourth than to the inner 



cross vein ..Phtto, Dsv. 



10 (1) Alulfe very large, and anal segments of female armed with claspers or 

 forceps Leucostoma, Mgn. 



38.— CLISTA, Mgn. 



Leucostoma, p. Zett. 



Gen. cli. — Eyes long and nude, extending over most of the side 

 of the head, approximate in the male ; chin small but setose ; epistome 

 prominent ; vibrissse large ; fronto-orbital bristles in a double row 

 behind in both sexes, and the inner row continuous wath a line of fine 

 setse, w^hich extends to the bottom of the narrow^ cheek ; facialia bare ; 

 antennae with the second joint nearly as long as the third ; arista sub- 

 pubescent ; abdomen without discal setae ; stalk of the first posterior 

 wing-cell about two-thirds of the length of the outer cross vein, 

 which is placed nearly midway between the bend of the fourth vein 

 and the inner cross one, or sometimes rather nearer to the former. 



1 (2) Abdomen with white fasciae 1. mterens, Mgn. 



2 (1) Abdomen immaculate 2. cenescens, Zett. 



C. M^RENS, Mgn. 

 Black and glabrous ; frontalia shining black behind, and with a central black 



This table differs in some points from that placed at the beginning of my paper. 



