402 R.OSTEN SACKEN 



spots ; the intermediate one bears , in the middle , a smooth , 

 shining spot, likewise black, and having the shape of a narrow- 

 arrowhead, whose point is truncate and directed backwards, the 

 rest of the thorax, including collare, pleurae, a narrow square 

 in front of the scutellum , scutellum , metanotum etc. are of a 

 uniform, opaque yellowish-orange. Four first abdominal segments 

 yellowish-orange, with brown incisures ; the four following seg- 

 ments black, shining, with a slight metalhc, bluish lustre ; three 

 velvet-black, opaque, crossbands are placed, the first, at the be- 

 ginning of the black color, the two others on the incisures. 

 Ovipositor reddish-yellow. Halteres yellow. Legs black, the basis 

 of the femora and the coxae, yellow. Wings of a uniform pale 

 brownish tinge ; subcostal cell slightly yellowish ; the interval 

 between the auxiliary and the first longitudinal veins a little 

 darker brown ; stigma brown. 



Hah. Hatam, N. Guinea (Beccavi ixxiy 1874). A single female. 



NB. Pachyrrhina tripartita Walk. Proc. Linn. Soc. V, p. 231 

 (Dorey, N. Guinea), has some points in common with this spe- 

 cies, but is too vaguely described for identification. However a 

 « metathorax with an abbreviated black band », is not to be 

 found in P. melanura. I could not find that species in the 

 Brit. Mus. 



Limnobia spec. One specim. Kandari, Celebes, 1874 (Beccari). 

 A true Limnobia, of a peculiar type ; unfortunately a frag- 

 ment. 



Libnotes simplex n. sp. c/'. Reddish-yellow; antennae brown, 

 except the first joint , which is yellow ; wings yellowish hya- 

 line. Length: 9-10 mm. 



(The specimen is imperfectly preserved). Rostrum and first 

 joint of antennae yellow ; antennae and palpi brown ; the latter 

 yellow at the root ; joints of the flagellum distinctly pedicelled, 

 the two first short , subglobular , the following subcylindrical , 

 slightly incrassated near the base (with a single long hair on 

 each incrassation), each successive joint increasing in length and 



