NOTE ON EUMESTLETA. 315 



I have to thank Mr. Ku-by for assisting me in working out the 

 type of Thalpochares, Led. The case stands thus : — Lederer 

 indicated his genus (VerhandL zool.-bot. Ver. v., 1855, p. 267), 

 and gave T. ont.rina, Hiib., and T. parva, Hiib., as types. In 

 his subsequent description he inckided all species previously 

 recorded under AntliDphila and ISIicra. His first action, never- 

 theless, must necessarily stand. 



Hiibner, in his ' Verzeichniss,' p. 256, had already indicated, 

 as types of his genus Eromene, E. ostrina, Hiib., and E. parva, 

 Hiib. ; so that the two genera Thalpochares and Eromene are 

 absolutely synonymous. 



Following Eromene, stands Hiibner's genus Trothisa (types, 

 T. paida, Hiib., and T. miniUa,YL\:\\).). Lederer observes that 

 " Herrich-Schtiffer changes the name to Trothisa, Hiibner; 

 Hiibner's genus Trothisa consists, however, only of two species, 

 paula and minuta ; the remaining species are separated by him 

 into several other genera, "^a singular reason for ignoring a 

 genus ! 



Thalpochares, in its later and extended signification, would 

 fall to Euhlemma, which precedes both Porphyrinia and Eromene 

 in Hiibner's 'Verzeichniss.' 



The only species of Euhlemma which bears the slightest 

 resemblance to T. mundida and latipalpis in coloration and 

 pattern is my E. Jij/pcnoides ,- but in structure the latter 

 species is very distinct, both the palpi and legs being more 

 slender and quite naked of hairs, whereas in these American 

 species the second joint of the palpus is very broadly fringed, 

 distinctly more so than in Eumestleta flammicincta. This would 

 indicate affinity rather to Microphysa jiicunda than to any 

 species of Euhlemma (the species of which genus have the palpi 

 either smooth or coarsely scaled, but never distinctly fringed). 



Tbe uniform colouring of the secondaries and the conspicuous 

 accessory cell of the primaries sufficiently remove these American 

 species from Microphi/sa, whilst the latter character takes them 

 right away from Euhlemma, but allies them to Metachrostis. 



I, therefore, refer these species and the allied "Pi/ralis" 

 plumhealis of Walker to a new genus, which may be called 



Ommatochila, n. gen., 

 Smoky greyish moths, the primaries of which are traversed by 

 a darker angular band, edged with black or brown and white ; 

 costal margin beyond this band dotted with white, apical and 

 outer margins bounded internally by a series of ocelloid spots; 

 a pale zigzag submarginal stripe, more or less distinct. 

 Secondaries very uniformly coloured, not l)anded. General 

 aspect of Metac'liro^tis, but with the second joint of the palpi 

 broad and fringed in front ; antennae of males finely ciliated. 

 Type, 0. mundula, Zell. 



