98 On Eriocera in the British Museum. 



tliough the descriptions do not quite agree, especially as 

 regards the thorax. 



Closely allied to the dichroa group, and certainly not 

 separable from it subgenerically, are : (a) the bicolur group, 

 with similar claspers, side-pieces, and parameres to those of 

 the dichroa group, but with the penis somewhat longer and 

 more curved ; (b) the morosa group, with hypopygium 

 similar to that of the fncolor group, but with quite different 

 coloration ; (c) the albonotata group, with three apical wing- 

 spots, deep preapical notch on outer clasper, parameres 

 almost simple, the dorsal lobe represented by a small back- 

 wardly-projecting tooth, penis straight ; (d^ the albipundata 

 group, with one apical wing-spot, side-pieces swollen at the 

 base beneath, parameres broader than in the albonotata group 

 (text-fig. 2f), penis more or less curved ; (e) the infixa 

 group {E. infixa, E. burneana, and probably some other 

 species with dull abdomen and ornate Aviugs), with hypo- 

 pygium resembling that of the albonotata group, but 

 preapical notch of outer clasper less well-marked. 



1 do not know E.javensis(T)o\.), but if, as seems likely, it 

 is nearly related to E. infixa, the name Oligoniera could be 

 applied to the whole of this group, if it could be satisfactorily 

 distinguished from the chirothecata group, which hardly 

 seems possible. 



10. E. lunigera (Walk.) has several peculiarities in its 

 hypopygium (text-fig. 2g). The side-])ieces have a small 

 rounded basal lobe studded with small blunt black spines; 

 the outer clasper almost regularly narrowed to the tip, 

 which is scarcely bent ; the penis is very short and broad, 

 but somewhat curved ; the parameres with strong backwardly 

 projecting basal tooth. Walker's type of optabilis has now 

 nothing left but the head and thorax; these, however, agree 

 exactly with E. lunigera, so that the two names most 

 probably apply to the same species. 



11. The plumbicincta Group, including the seven species 

 under heading 88 in the key. All these are evidently closely 

 allied, and, apart from the similarity of wing-markings 

 (which is obscured but not obliterated in E. chrysomela by 

 the development of yellow colour on the basal half) and in 

 the abdominal banding, they agree in the presence and 

 somewhat unusual length of cell Mj. The hypopygium is 

 remarkable for the great length of the penis (see descriptions 

 of the new species, and text-figs. 2 a, 2 b, 2 c); the outer 

 claspers (text-fig. 1 a) have the preapical notch unusually 

 small, the tip scarcely bent; the side-pieces of all the species 



