new and little-known Tipulide. 267 
slightly concave ; pubescence nearly as long as the width of 
the joint. Palpi yellow. Thorax: pronotum entirely dull 
orange. Preescutum dull orange-ochreous, with the usual 
three shining stripes; the middle part only ‘of these stripes 1s 
blackish, the dark colour shading off gradually into the orange 
ground- colour ; there 1s, however, a sharply defined edge 
to the shining parts. The dark colour of the median stripe 
barely reaches thé front margin. Scutum shining orange- 
ochreous, the usual dark spots absent ; a black mark just 
above and in front of the root of the wing, extending a short 
distance along the suture. Scutellum and postnotum 1 entirely 
shining orange-ochreous ; pleure uniformly orange-ochreous, 
slightly shining. Abdomen almost entirely orange-ochreous, 
the only dark marking being an ill-defined blackish streak on 
the lateral margins of the second, third, and fourth tergites. 
Legs yellow, tarsi dark brown, tips of femora and tibia 
narrowly black. Wings almost hyaline, stigma no darker, 
devoid of hairs. Rs, R.,3, and R, all about equal in length, 
descending portion of R,,; not much shorter. Discal cell 
normal. Cell M, petiolate. Halteres ochreous. 
Length of body 8°5 mm.; wing 8 mm. 
Arisan, 8000 ft., 10. x. 1912 (Z. Nitobe), 1 So. 
A very distinct species, owing to the small size and the 
unusual thoracic marking. 
Pachyrrhina formosensis, sp. n. 
Head missing. Thorax almost uniformly brownish 
ochreous, not particularly shining ; the only dark marking is 
a blackish streak on each lateral margin of the scutum just 
above and in front of the wing-root. Abdomen dull yellow- 
ochreous, with broad median and narrow lateral black stripes. 
The median stripe extends almost continuously along seg- 
ments 2-7, broadening out slightly on the posterior margins 
and being only narrowly interrupted near the bases of 
segments 2 and 3, segments 1 and 8 being entirely pale 
above. The lateral stripe extends from segments 1-8, is of 
even width throughout, and is narrowly interrupted behind 
the middle of segment 2 and before the middle of segments 
3-6. Ovipositor brownish ochreous. Legs ochreous, tips of 
femora and tibize indistinctly darker, tarsi brownish. Wings 
slightly brownish-tinged, the stigma and the subcostal cell 
(but not the costal) dark brown ; ; also an ill-defined brown 
margin to the apical part of the wing; a rather inconspicuous 
pale spot on each side of the stigma, which bears a few 
hairs ; descending portion of R,,; dark-margined and very 
