SARROTHRIPIDsE. 235. 



with a large black spot over the anal angle, seems to have 

 been known as ilicanus ; another, devoid of all the conspi- 

 cuous round spots = Lathamianus ; another, more brownish- 

 grey with all the round spots distinct, Afzelianus ; and two 

 more, in which the usual pattern of lines, bands, and spots is 

 quite obliterated, except a few cloudy dots near the hind 

 margin, but in which the ground colour is chestnut-brown 

 shading paler behind, and the substituted markings consist 

 of black stripes longitudinally from the base down the 

 principal nervures, are called, when the black stripe on the 

 median reaches the subterminal line, ramosaniis ; where it 

 extends to the hind margin, Stonamis. At least, this is how 

 I, in some degree, attempt to understand them. The last two 

 are branches of a very remarkable and distinct variety or 

 race, in which the normal markings are almost obliterated and 

 a totally different ground colour, with utterly changed mark- 

 ings, is substituted ; but the previous forms constitute modi- 

 fications only of the normal colour and markings, and these 

 are so connected by intermediate gradations that it is far 

 from easy to disentangle the named forms. Moreover, some 

 of the most striking variations seem to have been disregarded. 

 One is of an exquisite pale silvery-grey with faint purplish 

 clouding and a central black dot ; others, more of the normal 

 colouring, have a sharp black streak down the base spreading 

 a little on the dorsal margin ; others, with ground colour 

 yellow-brown, have the fore wings sprinkled and blotted to a 

 greater or less extent with large black cloudy spots ; in others 

 the black has spread almost all over the fore wings, obliter- 

 ating the markings ; and in those with the branched black 

 longitudinal stripes, some are of a paler chestnut clouded 

 with black, but with the hinder area and part of the dorsal 

 margin silvery-white. Perhaps the most lovely form that I 

 have ever seen was one formerly in the collection of Mr» 

 0. A. Briggs : its ground colour clear bright white, with a 

 sharply margined central band of rich dark brown ; the spots 

 before the first line sharp and bright, and those forming the 



