14 HYMENOPTERA. 



transverse, slightly curved, delicate striation ; the apical segment 

 with a longitudinal striation. 



Hah. Australia (Port Jackson). 



8. THYNNUS ANNULATUS. 



Thynnus annulatus, Kirby, Trans. Linn. Soc. xii. 476. 29 <$ . 



Guer. Voy. Cog. Zool. ii. 228. 



King, Berl Abhandl. (1842) 17. 5. 

 Thynnus australis, Boisd. Voy. de I'Astr. Zool 655. pi. 12. f. 2. 



Guer. Voy. Coq. Zool ii. 228. 



Hob. Australia (Port Jackson). 



9. THYNNUS AUSTRALIS. B.M. 

 Myrmecodes Australis, Gray, Cuv. Anim. Kingd. (Griff.} (nee 



Boisd.) xv. 516. pl.71.f.3$. 

 Thynnus Gravii, Guer. Voy. Coq. Zool ii. 231. 

 Thynnus Australis, Klug, Berl Abhandl (1842) 18. 6. 

 Thynnus Brownii, Westw. Arc. Ent. ii. 113. pi. 76. f . 1 < . 



Hob. Australia (King George's Sound). 



10. THYNNUS WALLISII. B.M. 



Male. Length 12-13 lines. The head, antennae, thorax, 

 femora, and base of the abdomen black ; the mandibles, clypeus, 

 the anterior margins of the face and lower orbits of the eyes 

 yellow; tips of the mandibles rufo-piceous ; the posterior mar- 

 gin of the prothorax and the tegulae yellow ; the tibiae and 

 tarsi reddish yellow or pale ferruginous. The head and thorax 

 densely covered with griseous pubescence, that on the disk of 

 the latter yellowish ; the legs have a short thick griseous pubes- 

 cence; the wings flavo-hyaline, the nervures fusco-ferruginous. 

 Abdomen reddish yellow, each segment with a faint ferruginous 

 transverse line, which is straight in the middle, then curves 

 abruptly downwards, the line being widened at the lower part of 

 the curve; the curved line then runs upwards as high as the 

 transverse line, and from thence curves off to the outer margins; 

 above the outer curve there is an indistinct ferruginous dot ; the 

 apical segment is punctured at the base, and has curved striae at 

 the apex ; the lower ventral plate is triangular, the lateral angles 

 subdentate, the apical one with a blunt spine. 



Female. Length 10 lines. Head ferruginous, with a trans- 

 verse yellow stripe on the front, between the eyes ; the thorax 

 and coxae black ; femora, tibiae, and tarsi ferruginous, the two 

 latter densely spinose. Abdomen yellow above, black at the base 

 and beneath ; each segment with a similar curved line as in the 



