400 Mr. A. G. Butler on Nocturnal Lej^idoptera 



bristles emitted from the base of these wings (presumably a 

 scent-fan), which, when closed, extends along the costal 

 border to some distance beyond the end of the cell, but when 

 opened extends obliquely backwards across the secondaries, 

 and forwards across the under surface of the primaries : the 

 frons appears (judging from the description by Clemens) to 

 be narrower than in Holcocera ; but in other respects the two 

 genera seen to be much alike*. 



Hyposmochoma has somewhat the aspect of 5?^ to?is, excepting 

 for its singularly placed palpi, which are emitted almost as far 

 apart as in my New-Zealand genus Boocara. 



38. Hyposmochoma Blaclcburnii, sp. n. (No. 123). 



^ . Primaries dark sepia-brown, the second and third 

 sixths of the costal half densely sprinkled with cream-coloured 

 scales, forming a large oblong patch, sharply defined and 

 oblique at its basal extremity, but diffused externally ; rather 

 beyond the middle of this pale patch is a short longitudinal 

 black subcostal spot ; a few scattered creamy or pale testa- 

 ceous scales on the basal area; a patch of white and pale 

 scales on the dorsal margin near the external angle ; a trans- 

 verse subapical white belt, notched internally, angulated and 

 expanded upwards along the outer margin externally, and 

 enclosing one or two marginal black spots ; a central longitu- 

 dinal, slightly branched, black streak almost from the base to 

 the white belt ; apex black, crossed by two transverse spots 

 of whitish scales ; costal fringe immediately opposite to the 

 commencement of the subapical belt pale golden or shining 

 whity brown ; fringe of outer margin of the same colour, but 

 tipped and traversed by grey lines, and with two or three 

 black spots upon the inner line : secondaries grey, with bronzy 

 reflections and bronze-brown fringe ; the pencil of hairs or 

 bristles stramineous : thorax black, the head and fringes of 

 the tegulffi pale bronzy brown ; palpi with silvery inner mar- 

 gin : abdomen dark greyish brown. Wings below shining 

 plumbaginous grey, with slight cupreous reflections, fringes 

 paler than above : body below pale metallic golden ; legs 

 brown above, the tarsi black, banded with cream-colour, tibial 

 spines cream-colour. Expanse of wings 9 lines. 



One specimen. " Occurring at about 4000 feet above sea 

 on Haleakala, Maui ; various localities. I think it is con- 

 nected with dead wood." 



* I again have to thank Lord Walsingliam for referiing me to the de- 

 scription of Holcocera ; without this reference I should have been much 

 puzzled as to the affinities of this singular insect. 



