ADDITIONS. 



These are printed on one side only of thinner paper in 

 order that they may be cut out and pasted in at their proper 

 places, which is much more easily and neatly done than 

 making the alterations with pen and ink. A correct line is 

 repeated here where required to allow of this, and for the 

 same reason the order is not consecutive. 



(6/io means page 6, ioth line from the top, not counting 

 the heading, page, or index lines). 



28/4 delete the line and insert 



31a (31b). First antennal joint about as long as the second ; 



0.4. b.b. closed. Xylomyia, Rnd. (XV. 152). 

 31b (31a). First antennal joint much longer than the second ; 



OAb.b. open. Xylophagus, Mg. (XVII. 164).- 



31/18 delete the line and insert 



never shining black. 

 82a (82b). Face in profile straight or concave. 



CORDYLURID^E (XXXIV.) 



82b (82a). Face in profile convex (like VII. 21). Small 

 shore flies. Canace, Hal. (609) 



42I22 delete the li?ie and i?isert 

 1 (2). 0.5. open ; X.5. absent. 



la (lb). Legs slender, the hind metatarsus as long as or 

 longer than the other tarsal joints together. 



64. Anarete, Hal. (352. candidata, Hal.) 



lb (la). Legs rather stout, hind metatarsus shorter than the 



other joints. Scatopse, Geoff. (65) 



244/ ig delete the line and insert 



gently bent; squamae generally large, the inner 

 scale projecting considerably beyond the outer. 



246/13 delete the line and insert 



the end of V.6., or at least always considerably 

 longer than V.6. ; squama? rather small, inner 

 scale generally slightly projecting, distinctly so in 

 Piezura, 



