380 Mr. A. G. Butler on Heterocerous Lepidoptera 



ill-defined blackish subanal spot ; under surface shining^ 

 grey in general appearance, owing to the denser grey 

 speckling all over the wings ; small black disco-cellular 

 spots and faint traces of the two central stripes ; there is 

 no difference of pattern in the sexes, but the female is 

 much smaller than the male and rather darker. Expanse 

 of wings, (? 34 mm. ; $ 26 mm. 



In this form the discal stripe is sometimes widened in 

 the male into a rather broad and internally diffused band, 

 thus forming a connecting link with the next variety, in 

 which the primaries are reddish throughout, with the 

 basal half and external area greyish, the brown lines 

 across the wings being quite distinct, more so even than 

 in the typical form ; the inner pale stripe, however, is 

 lost in the general tint of the wing, only its brown outer 

 edging being left ; the male has the outer stripe bordered 

 externally by a broad blackish wavy band. Expanse of 

 wings, ^ and $ 29 mm. 



In other respects this variety agrees with the pre- 

 ceding one. 



Var. conigera. 



Wings pale greyish brown, with slight cupreous re- 

 flections irrorated with black ; the primaries have a con- 

 spicuous black disco-cellular spot ; the lines and stripes 

 are all ill-defined, the discal reddish stripe diffused, and 

 bounded externally by a series of blackish-edged conical 

 spots (somewhat as in the male of, T. lapidea) ; the 

 secondaries are slightly darker towards the outer margin, 

 and there are one or two subanal spots; below the 

 primaries are distinctly greyish brown, and the central 

 stripes are obsolete ; otherwise the wings are like those 

 of the preceding form. Expanse of wings, S 32 mm. ; 

 ? 27 mm. 



It is possible that this form may prove to be distinct ; 

 like the others it was taken at Valparaiso, some time 

 between March and July ; in some respects it forms 

 a transition to the following species, though, as already 

 hinted, they may all prove to be variations of one very 

 inconstant type. 



