522 EXOTIC MICROLBriDOPTEEA. 



practical!}' straight in one of tlie two original specimers, but in the 

 other it is faintly sinuate, and in 9 other examples obtained 

 subsequently which 1 identify with this species it is also slightly 

 sinuate, which seems the normal condition ; in no example of 

 yraminivora is there any trace of sinuation. In truculenta also 

 there is a white discal dot on end of cell which does not appear in 

 grannidvora. 



Bactra commensalis, n. sp. 



S ?. 10-12 mm. Head whitish. Palpi whitish, a grey band 

 on second joint. Thorax oclireous-whitish sometimes tinged grey, 

 apex of ])atagia brownish. Ovipositor $ retracted. Forewings 

 termcn slightly rounded or straight, obliijue ; whitish-uchreous, 

 sometimes slightly greyish-tinged ; short oblique dark fuscous 

 strigulae on costa, some grey or brownish strigte from them 

 posteriorly ; markings brownish, variably suffused dark fuscous, 

 especially in d" ; a suSused blotch in disc at g, a larger and more 

 irregular blotch at g, sometimes connected with preceding, and a 

 wedge-shaped streak terminating in apex ; a dark fuscous terminal 

 line, veins in S sometimes dark-lined posteriorly : cilia grey with 

 fine lines of white specks. Hindwings cf grey or pale grey, 

 $ grey-whitish, veins sometimes grey; cilia whitish, a fine grey 

 subbasal line. 



Bexgal, Pusa, bred April to June from larvge mining stems of 

 Cy melon dactylon {Fletcher)-^ ex. (2 c? , 4 $ ) ; also BoMiiAY, 

 Surat, July {Maxwell-Lefroy), 1 S . Pupa without anal projecting 

 papillcc (reduced to dots) ; spines of segmental series very short and 

 numerous, prteanal series usually of 5 or 6 spines. This species 

 and qraminivord were bred together from the same material, and as 

 both are variable and similar were at first very perplexing ; but 

 Mr. Fletcher kindly and wisely forwarded me the whole of the 

 examples bred for examination, and also fortunately sent with 

 most of the specimens the pupal cases ; I was thus enabled to 

 satisfy myself of their distinctness. jS^o species of this difficult 

 genus has hitherto been reared from a grass. 



Polychrosis parapliragma, n. sp. 

 $. 11 mm. Head, thorax light greyish, face whitish. Palpi 

 grev, terminal joint and apex of second whitish. Forewings 

 elongate-triangular, costa slightly arched, ternien slightly rounded, 

 somewhat oblique; whitish, slightly find irregularly grey-sprinkled; 

 costa and dorsum strigulated dark grey ; markings brownish, 

 partially suffused black and grey irroration ; base narrowly grey ; 

 edo-e of basal patch indicated by a slender slightly oblique 

 transverse fascia at \, hardly bent in middle ; central fascia 

 moderate, slightly curved, hardly oblique, posterior edge with 

 small median projection; a small spot on costa at | ; an irregularly 

 transverse-oval blotch, pointed above, resting on termen below 

 middle and reaching from near costa to near tornus, upper half 

 largely blackish-mixed, lower without black; a suft'used apical 



