286 Rev. A. E. Eaton's Annotated List of the 



the tint of the membrane to a small extent deeper : marginal and 

 submarginal areas of the fore-wings throughout very light reddish 

 (burnt umber) brown. Setae very pale sepia-brown, shifting to 

 whitish, with the uniformly distinct joinings very narrowly picked 

 out with blackish. Length of body ^ 19—20, ? 20—21 ; wing ^ 

 20, $ 21—22 ; setae ^ im. (exterior), 33, ? im. 19 and 18—20 and 

 19 ; anterior leg (J 15, ':^ 9 nun. 



Wellington District {Hudson, No. 32). 



The Sectional Type of Zc2Jtophlebia is represented by 

 two genera in New Zealand, of which one is new. Mr. 

 Lillie discovered nymphs of single species of each genus 

 last season, and most kindly forwarded specimens to the 

 author. Their investigation is postponed until it can be 

 ascertained whetlier the discoverer purposes publishing 

 full descriptions of them in that country or not. The 

 nymph assigned by him to Atalophlehia nodularis has 

 tracheal branchia3 of the same form as those of Ze2)to- 

 phlcbia : the other genus, Delcatidium, has acutely ovate 

 single lamellge. 



ATALOPHLEBIA. 



Tarsal claws all narrow and hooked ; hind wing more 

 or less obtusely subovate ; forceps-basis of ^ either 

 entire, or at most merely emarginate in the middle of 

 its apical edge. The homogeneity of this genus, alluded 

 to with implied suspicion as long ago as 1884 in Trans. 

 Linn. Soc. London, (2) Zool., vol. iii, p. 84, remains 

 uncertain. The degree of importance to be attached 

 to the differences noted in the character of the caudal 

 setae of the adult flies depends largely upon whether they 

 correspond with differences in the tracheal branchiai of 

 the nymphs. In identification of species, the form of 

 the penis, the colour or markings of legs and setse of 

 the imago, and the colouration of wings of the subimago 

 are items of much importance. Wings of imagines are 

 often very similar in closely related species. 



ATALOPHLEBIA VERSICOLOR, sp. nov. (Plate X, figs. 2a 

 and 26, details). 



Subimago (dried, and perhaps partly reddened post mortem in the 

 killing-bottle, like other specimens captured by Mr. Hudson). — Fore 

 wings, in the marginal and submarginal areas, tinted with dull 



