TO NEW GUINEA IN 1904 ann 1905. PART I. om 
is more weakly punctured; the post-scutellum smooth, obli- 
quely sloped; its apex is transverse. Metanotum almost smooth, 
obliquely sloped; its black central part is depressed. Abdo- 
minal petiole of moderate length, as long as the metanotum, 
its basal third narrowed. | 
Allied to J. maculifrons Cam., from Borneo, having pretty 
much the some colouration; in that species the yellow is 
brighter, more lemon-coloured, the post-scutellum is entirely 
yellow, the 2 marks on the metanotum are smaller and are 
gradually narrowed above, the abdominal petiole (and parti- 
cularly the narrowed basal part) is longer; and the band an 
apex of 214 segment is narrower compared with the black 
central part. In maculifrons, too, the black mark on the clypeus 
is triangular, becoming gradually narrowed from the top to 
the bottom, while in spilocephala it is not much narrowed 
below. J. latibalteata Cam. (also from Borneo) may be known 
(as it may be also from J. maculifrons) by the shorter 209 
abdominal segment, it being not much longer than it is wide 
at the apex. 
Polistes malayanus, Cam. 
lc Rp 00. 
Merauke. 
I think it very probable that this may be only a form of 
P. tepidus F., which probably runs into local races over the 
Austro-Malay and Australian Regions. Cf. Schulz, Berl. Ent. 
Zeit., XLIX, 227. Probably P. picteri Saus. from Australia is 
another form. To. settle the specific limits of P. tepidus F. 
a good series of specimens of both sexes from Malaya and 
Australasia is necessary. 
Ischnogaster malayaensis sp. nov. 
Black; the face, clypeus, mandibles, the front, lower eye 
Tijdschr. v. Entom. XLIX. 16 
