11s A DECADE OF AUSTRALIAN THYNNIDEOUS INSECTS. 
is also the colour of the tibie and tarsi; the wings are slightly 
stained with yellowish brown. 
Inhabits King George's Sound. In Mus. Westw. 
THYNNUS TUBERCULIVENTRIS, Wesie. 
(Plate 76, fg. 2.) 
Niger, griseo-pilesus clypeo fiavo-varie, abdomine elongato nitide nigro, segmentis utrinque 
fulve maculatis, seq¢mente 2ndo subtus tubereulis duobus parvis conicis instruct. ¢ 
Long. corp. lin. 12. Expans. alar. lin. 20. 
The head is small and black, closely and finely punctured; the 
elypeus is slightly prominent, and convex: yellow, with a slender 
eurved dark line on each side, and a dark central spot; the apex 
is truncate, nearly concealing the ciliated labrum: the yellow 
margin of the clypeus is extended to the eyes, which have an 
abbreviated yellow margin to the lower part, both in front and 
behind ; the head has also two minute yellow dots behind the eyes; - 
the antennz are black, with two minute yellow frontal dots ; the 
mandibles are yellow, with the tips brown; the manxille and 
mentum are black, the former, as well as the maxille, strongly 
fringed with pale hairs. In other respects, the trophi agree with 
T. Brownii. The thorax is entirely black, and clothed with gray 
pubescence ; it is of an oval form; the abdomen is of an elongate 
oval form, broadest across the middle ; it is black and shining, each 
segment with a large fulvous lateral spot, which becomes confluent 
on the sixth segment, the terminal joint being entirely fulvous ; 
the basal segment is conically elevated in front above, and beneath 
it is not earimated; the second segment is, however, armed 
beneath with two small conical tubercles: this and the following 
segments are dark yellow, with black margins; the terminal 
segment is armed at the tip with a short acute black spine, the 
sides of which, at the base, are slightly dilated. The legs are 
chesnut-coloured, with the coxz and base of the femora black ; and 
the wings are very slightly stained with yellowish brown. 
Inhabits King George’s Sound. In Mus. Westw. 
THYNNUS (AGRIOMYIA?) MELLEUS, Westw. 
(Plate 76, fiz. 4.) 
T. capite thoraceque nigris flavo variis, pronoto flavo, puncto parvo nigro, abdomine elongato 
~ 
fulve, nigro-cingulsio, pedibus fulvis,alis flavis. 3 
Long. corp. lin. 93. Expans. alar. iin. 16. 
The head is rather small, black, and punctured; the eyes are 
margined with yellow, except on the crown of the head, the pale 
