510 Mr. R. E. Turner on Fossorial Hymenoptera. 



at the base, sparsely punctured at the apex ; hypopygiura 

 narrow, the sides curved upwards, without basal spines, the 

 apical spine slender and slightly recurved. Anterior coxae 

 distinctly concave. Second abscissa of the radius as long 

 as the third ; second recurrent nervure received at one-sixth 

 from the base of the third cubital cell. 



Hab. Brisbane {Hacker) : September. 



In colour the male resembles T. piigionatus, Guer., which 

 occurs in the same locality, but the colour of the legs is 

 different. The female is quite distinct. 



Thynnoides berthoudi, sp. n, 



S . I^iger, albo-pilosus ; mandibulis, clypeo, orbiUs oculorum, 

 margiae postico capitis, lineisque duabus obliquis inter antennas 

 flavis ; alis fusco-hyalinis, basi subhyalinis, venis uigris. 



Long. 16 mm. 



^ . Clypeus convex, produced and not very broadly trun- 

 cate at the apex ; antennae very slightly attenuated towards 

 the apex, as long as the thorax and median segment com- 

 bined; the interantennal prominence broadly rounded at the 

 apex, marked in the middle with an obscure longitudinal 

 carina. The whole insect opaque, closely and not coarsely 

 punctured, more finely on the median segment than else- 

 where, the whitish pubescence dense on the median segment 

 and on the apical margins of the abdominal segments. 

 Abdominal segments strongly constricted at the base; the 

 basal segment as broad at the apex as long, with a broad 

 ongitudinal sulcus nearly reaching the apex. Apical dorsal 

 segment longitudinally striated, truncate at the apex ; hypo- 

 pyuium elongate-triangular, the basal angles prominent, the 

 apical spine slightly recurved. Anterior coxae slightly con- 

 cave. Third abscissa of the radius half as long again as the 

 second; first recurrent nervure received beyond tsvo-thirds 

 from the base of the second cubital cell, second a little before 

 one-third from the base of the third cubital cell. 



Hab. Waroona, Western Australia (G. F. Berthoud) ; 

 December. 



Nearest to nephelopterus, Turn., but differs in the much 

 denser pubescence, the less concave fore coxae, and the less 

 prominent basal lobes of th^ hypopygium. The yellow 

 markings on the head are also different. 



Thynnoides fnscocostalis , sp. n. 



c^.'Nig^"; mandibulis basi clypeoque margine apicali pallide 

 flavis ; alis subhyalinis, costa obscuriore, venis nigris. 



