92 THE entomologist's record, 



Fumeid it belongs to the short -spurred group with " celkila intrusa " 

 {i.e., reticulati'lla, &c.). Xorve[iica is similarly conditioned. I have 

 not seen specimens of either of these or of vaiblensis. 



(? Bruandia) raihlensh. — I have not met with any account of B. 

 vaiblensis, except the original description by Mann made from three 

 specimens. The account he gives of it would lead one to suspect it to 

 be a very large pale form of B. reticulatella. My Eiviera specimens 

 show that that species varies much in size and also in tint, and may 

 very well have a large pale form as well as large and small dark ones. 



(To he continued,) 



Notes on Plate IV. 

 The figures are all from camera sketches. The neurations are not 

 to a uniform scale of enlargement, but the well-known expanse of each 

 species shows easily what this is. The tihise are enlarged 23 diameters, 

 i.e., figs. 19-49 ; 50 and 51 are only enlarged 8 diameters. 



The neurations illustrate the great variability of this character in 

 the Psyckidcs, although this feature is, perhaps, less prominent in these 

 lower divisions. Figs. 1 and 2 are the wings of one specimen of Luffia 

 Icqjidella, nervure 3 present in one, absent in the other. Figs. 7 and 8, 

 Bacotia sepium : 8 is fairly typical, 7, the other forewing from same 

 specimen, shows the areolar cell nearly evanescent and a small branch 

 present, probably representing nervure 10 (Meyrick's notation) ; 

 similarly fig. 10 shows a nervure absent in fig. 9 (which is the more 

 normal), thus illustrating a similar variability in the hind-wings of B. 

 sepium. Figs. 13 and 15, Proutia hetulina and P. eppAngella [salicolella ?), 

 the connate nervures figured in 15 often occur in P. hetulina ; it is 

 doubtful if the form of hind-margin shown in 15 is more than an 

 individual variation. 



The small figures against the tibiae represent the percentage lengths 

 of the tibia from the point of origin of the spine to end of tibia, taken 

 as being the length of the spine. The lengths of the tibife vary with 

 the sizes of the specimens, e.(j., fig. 37, J/, edwardsella, and fig. 38, M. 

 hihcrniccUa, are approximately proportional to the sizes of the species. 

 In figs. 24, 25, 26, on the other hand, P. hetulina spur is much longer 

 than that of P. eppiwjcUa, though the insects are only slightly different 

 in size. In figs. 25 and 26 the difierent length of spur is individual, 

 the French specimen having one short spur and one long one, like 

 that figured from Epping. I am sorry to add that though the different 

 thicknesses and curvatures of the various tibiae are sometimes due to 

 specific distinctions, they are more often due to the aspect they are 

 viewed in and their method of preparation and mounting ; but I must 

 add that I am rarely able to say which element is most potent in any 

 individual case. I think, however, that figs. 43 and 45 probably have 

 really the same form of tibia. Again, fig. 39 is obviously viewed 

 more from below. English 21. crassiorella are not so abundant as to 

 enable one to say anything as to why fig. 31 shows such a curvature, 

 but it is probably due to an individual variation or twist in setting, or 

 some non-essential cause. 



What these sketches show is the relative signs of tibitT in difierent 

 species, and especially the point in the length of the tibia from Avhich 

 the spur arises. In this respect the figures may be relied on. The 

 calculated percentages are probably correct to two, or at most three, 

 points, the chief source of error here being the difficulty of always 



