66 



1. The 3rd autennal joint subequal to the 5th, with distinct broad 

 rings, which being indistinct in the 4th and 5th joints, the 4th 

 shortest, anterhinarial veiy short, postrbinarial with a very large 

 oblong, and the 5th with a large oval rhinariurn. 



2. Stigmata of the fore wings much shorter, fusiform, acute at 

 the tips and not sickle-like elongated, the stigmatic nervure 

 opening rather nearer the apex, 2 oblique of the hind-wings 

 very narrow, both widely and equally separated from the 



cubitus; on the costa with 2 hooklets. 

 Genotype - Nurudea ibofushi Mats. 



We have in Japan only the folloing one species. 



1. Nurubea ibofushi. n. sp. (PL XII, f, 7, a; pl.XIII, f. 3). 



Winged viviparous female - Body dark fuscous, abdomen yellowish 

 brown, with a greenish tinge; antennae fulvous, the 3rd joint somewhat 

 longer than the 5th, the 4th less than one half the length of the 3rd 

 fusiform, the 3rd with about 6 broad imcomplete rings, the 4th and 

 5th wanting distinct rings, but each with a very large rhinariurn, occu- 

 pying nearly the outer one half surface of it, anterhinarial nearry as 

 broad as the postrhinarial at the base, at the apex with 2 short hairs; 

 wings hay line, stigmata grayish, at the hind margin darker, veins ful- 

 vous; 2 obliques of the hind-wings widely separated from the cubitus, 

 with 2 hooklets on the costa; J legs pale fulvous, tarsi somewhat im- 

 bricated. 



Length of body 0.8 -1.1mm.; exp. tegm. 3.0 -3.6mm.; antennae 



0.3 mm. 



Nymph - Body yellowish brown; antennae subhyline, pale yeljowish, 

 broad, the 3rd the broadest, the 5th at the apex conical, the 4th only 



