AUSTRALIAN F0SS0MAL WASPS. 49 



than the second, which is received beyond one-third from the 

 base of the third cubital cell. 



2- Clypeus very short, transverse, without a carina. Head 

 rather large, more than half as broad again as long, with a dis- 

 tinct frontal sulcus, subopaque, with a few scattered punctures, 

 strongly rounded at the posterior angles. Thorax and median 

 segment sparsely punctured; the pronotnm nearly twice as broad 

 as long, rectangular, with a row of large punctures along the 

 anterior margin; scutellum very broad, as long as the dorsal 

 surface of the median segment. Abdomen v^yy finely and closely 

 punctured ; the first dorsal segment with a shallow transverse 

 groove before the apical margin ; second dorsal segment with 

 six strong transverse carinae ; fifth ventral segment longitudinally 

 rugose. Pygidium elongate, nearly lour limes as long as broad, 

 the sides nearly parallel, rounded at the apex, finely longi- 

 tudinally striated, smooth at the apex. intermediate tibiae 

 moderately swollen ; basal joint of intermediate tarsi spinose, but 

 not broadened. 



Hab. Brisbane {Hacker). September. From the Queensland 

 J\I useum. 



This is nearer to B. binghami Turn, than to any other species, 

 but is quite distinct. The hypopygium is broader than in 

 impetuosas Sm. 



LOPHOCHEILUS MAMILLATUS Turn, 



Thynnus (Lophocheilas) mamillatus Turn. Proc. Linn. Soc. 

 N.S.W. xxxiii. p. 171 (1008;, 6 ■ 



$. Nigra: mandibulis, pedibus, segmento ventrali quinto, 

 pygidioque ferrugineis ; antennis f uscis : segmento dorsali secundo 

 transverse sex-carinato. 

 Long. 9-11 mm. 



2- Clypeus without a carina, transverse at the apex; head 

 twice as broad as long, rounded at the posterior angles, smooth 

 a,nd shining, with a short but distinct frontal sulcus, a few 

 scattered punctures on the front. Thorax shining, with a few 

 small scattered punctures ; pronotnm half as broad again as long, 

 with a row of deep punctures along the anterior margin ; dorsal 

 surface of the median segment shorter than the scutellum, with 

 large scattered punctures. First dorsal segment very sparsely 

 punctured, with a deep transverse groove before the raised apical 

 margin ; second segment with six transverse carinas, a deep, 

 broad, transverse groove before the apical carina ; third and 

 fourth segments very minutely punctured, with sparse large 

 punctures intermingled ; fifth dorsal segment more coarsely 

 punctured in the middle, almost smooth at the base and apex. 

 Fifth ventral segment longitudinally rugose-striate. Sixth dorsal 

 segment longitudinally striated, smooth at the extreme apex, 

 about three times as long as the basal and twice as long as the 

 _ Proc. Zool. Soc— 1915, No. IV. 4 



