358 Mr. A. G. Butler on Heterocerous Lepidoptera 



of forms apparently allied, it will only prove how 

 important it is for collectors in the first place not to 

 jump at conclusions, and in the second place for cabinet- 

 naturalists not to accept such conclusions as indisputable 

 facts, as has apparently been done by Felder in the 

 present instance. 



27. Monoctenia chilenaria (PL XVI., fig. 13). 



3- Colotois / chilenaria, Felder and Eogenhofer, Keise 

 der Fregatte Novara, v., pi. cxxiv., fig. 6 (1875). 



"Las Zorras, at flowers, in February, March, and 

 April."— T. E. 



The form of the wings, as already stated under Azelina 

 felderi, is not correctly represented in the figure ; they 

 agree with those of Monoctenia falcrnaria 3 ,* the costal 

 margin being much elongated, and the outer margin, 

 excepting at apex, very slightly dentated; the sexes 

 agree in pattern and coloration. I have seven examples 

 before me. 



With the above were also four specimens of what I 

 must consider as a very distinct species, the primaries 

 being distinctly less angulated than in M. chilenaria, 

 and the pattern different. 



28. Monoctenia dentilineata, n. s. (PI. XVI., fig. 12). 



5" . Primaries sordid white ; the costal border, base, 

 centre of interno -median area, and a series of longitu- 

 dinal dashes close to the outer margin, brown ; an 

 irregular zigzag dark brown line across the basal third, 

 and a strongly dentated blackish discal line from costa 

 to inner margin ; two fine black basal dashes, a con- 

 spicuous black spot at the end of the cell, and a marginal 

 series of smaller black spots ; secondaries white, the 

 external border washed with brown ; a spot at the end of 

 the cell, a strongly dentated discal line (marked with 

 black dashes on the veins), and a marginal series of 

 small spots, dark brown ; head, collar, and tegulae grey, 

 with white borders; thorax white; abdomen whitish, 

 with faint bronze-brown reflections ; under surface 

 shining milky white ; markings iU-defined. Expanse of 

 wings, 39 mm. 



■■• And still more exactly with M. hlmcroldes, from Tasmania. 



