DescriiJtions of new species of Oriental BhyacopliiLT. 5 



4. Bhynco'phila articulata, n. sp. 



Ninth segment in the ^ continued broadly ventrally; no median 

 process. 



Wings with apex parabolic ; radius not furcate ; apical fork No. 2 

 much longer tlian No. 1 ; costal hairs simple ; membrane smoky with 

 yellowish irr(jrations. 



Inferior appendages of the ^ elongate seen from the side, upper 

 and lower margins sub-parallel ; second joint short, upper margin 

 much shorter than lower ; apical margin not excised, obliquely 

 truncate and provided with numerous small spine-like teeth on the 

 inner edge. The " lateral lobes " appear as if attached to a somewhat 

 triangular prolongation of the last segment ; the proximal end of 

 the lobes is rounded and slightly upturned ; the "lobes" themselves 

 are long, somewhat concave and applied to each other vertically, the 

 aj)ices however rather difficult to define accurately through being 

 concealed between the inferior appendages. 



9 unknown. 



Expanse 25-5 to 29 mm. 



Japan (Prycr), two males. 



5. Bhyacophila curvata, n. sp. 



Ninth segment in the ^ continued ventrally rather l;)roadl3'. 

 No median process properly so-called, although the segment is 

 triangularly produced between the long lateral lobes. 



Wings with apex sub-angulate ; radius not furcate ; apical fork 

 No. 2 usually longer than No. 1. Membrane rather dark, irrorated 

 with pale golden yellow ; fringes dark with broad pale interruptions : 

 a faintly-marked pale broad ante-apical band. Costal hairs simple. 



In the (J the inferior appendages have the basal joint rather long, 

 broad at the base and narrowing gradually ; second joint almost as 

 long as the first, very short on its upper edge, the apical edge 

 regularly excised to the obtusely pointed, sometimes much inturned, 

 apex. The lateral lobes are long, concave, somewhat curved inwards, 

 the apex excised. 



The 9 lias a long telescopic ovipositor apparently without any 

 important distinguishing characters. 



Ex})anse 16 to 24 mm. 



Khasia Hills, numerous examples. The species appears 

 also to occur in Sikkim. 



0. Rhyacophila scissa, n. sp. 



Ninth segment in the (^ continued ventrally very narrowly. 

 Lateral lobes apparently conjoined, concave, their apices inturned. 



