34 Lord Walsingham on Western 
sentative forms in both, The species placed in the genera 
Choreutis, Simaethis, and Glyphipteryx have near allies 
among the Amazonian types, but could be matched 
almost as closely by specimens from Assam and the 
Malay Archipelago, while Tiguadra, another Brazilian 
genus (to which a species is here added), is represented 
in the late Mr. Pryer’s collection from Japan. Nematois 
parvella, in the Adeline, carries us at once to Borneo and 
Sumatra for a careful comparison to enable us_ to 
distinguish it from more than one species equally resplen- 
dent; and this is the more remarkable, inasmuch as the 
Adeline are but poorly represented in all coliections that 
have hitherto reached us from the African region, and are 
apparently unrepresented in South America; while the 
alliance of Ptilothyris is with Adelomorpha, hitherto only 
known from a single species occurring in Celebes. 
Alucita simiialis, Wkr., affords a parallel instance, 
strengthened by the absolute similarity of specimens from 
both localities. These affinities will probably be more 
strongly recognised when the mass of material in my 
hands, illustrating this study from the islands of the Malay 
Archipelago and the adjacent peninsula, as well as from 
India and the extreme north of Australia, can be 
thoroughly worked out and described. 
My assistant, Mr. Durrant, has drawn and coloured the 
figures for the plates which illustrate this paper under 
circumstances of unusual difficulty, owing to the condition 
of the specimens and the absence of any lengthened 
series; the extreme interest which attaches to many of 
these unique forms being the chief incentive in under- 
taking a task which he thas achieved with remarkable 
success. ‘lo make correct drawings of the neural 
characters from ill-set and frequently contorted specimens, 
requires not only much labour and patience, but an 
intimate knowledge of structure which few possess, yet 
this portion of the work is of the utmost importance in 
instituting any comparison between what may be 
regarded as grades of structural variation, chiefly interest- 
ing for the light they may throw upon geographical 
origin and distribution; I must here express my 
acknowledgment for the pains that he has taken to 
ensure accurate delineation, as well as for the skill with 
which he has reproduced the natural colouring. 
