114 A DECADE OF AUSTRALIAN THYNNIDEOUS INSECTS. 
between the middle ones, being marked with two posteriorly con- 
vergent fulvous conical spots; the scutellum has two large obliquely 
oval fulvous spots, one on each side, behind which are two slender 
fulvous transverse strigee, and the metathorax is marked near the 
insertion of the abdomen with a yellow spot. The scutellum is not 
conspicuously elevated, and the metathorax is deflexed; the sides 
of the metathorax are marked beneath the insertion of the wings 
with two yellow spots, united below by a very slender curved yellow 
line, and the sides of the metathorax are also marked with yellow. 
The abdomen is considerably elongated and ovate, being rounded 
in front, very convex above, and with the apex deflexed or incurved ; 
it is black and shining; the first segment marked above with two 
small yellow spots at the base, followed by two rather broad 
transverse yellow spots, which nearly meet in the middle, each spot 
emitting a minute tooth behind ; each of the five following segments 
is marked above with two transverse subquadrate yellow spots 
(each emitting a little tooth behind), and with a yellow spot on 
each side, the posterior edge of which extends a little distance 
along the hind edge of the segment: the seventh segment above is 
longitudinally striated and yellow, with a small black dot in the 
middle; the abdomen is yellow beneath: each segment, except 
the first and last, marked with a brown spot in the middle, and a 
black curved line on each side. The anal segment beneath 
terminates in an acute black point, the sides at the base being 
dilated. The legs are castaneous; the cox yellow, marked with 
a small black spot at the base. The wings are stained yellowish- 
brown, with the costa darker ; the hind wings paler coloured. 
From King George’s Sound. In Mus. Brit. et Westw. 
I have adopted the MS. name applied to this species in the 
British Museum collection, in which a single specimen is contained. 
Figure 1 a represents the front of the clypeus and labrum; 1 8, one of the mandibles ; 1 ¢, 
a maxilla; and 1 d, the mentum and labial palpi. 
THYNNUS PICIPES, Westw. 
(Plate 77, fig. 2.) 
T. niger capite et thorace yriseo pubescentibus, clypeo mandibulisquo flavis, pedibus nigris, 
tibiis et tarsis brunneo-fuscis, alis flavido-fuscis, costa nigra. 
Long. corp. lin. 103. Expans. alar. lin, 19 ¢. 
An varietas T. flavilabris, Guérin Mag. de Zool. 1842, p. 8? 
_ The head is black, slightly shining, finely punctured, and clothed 
with short grey pubescence. It has a bifid tubercle in the middle 
