BY ROWLAND E. TURNER. 239 



beneath. Sixth segment coarsely punctured, with a spine on 

 each side at apical angles beneath ; apical segment with the 

 dorsal plate slightly produced, marked with strongly curved striae. 

 Hypopygium prominent, subtriangular, narrowly truncate at 

 apex, with a short, recurved, apical spine; obliquely striated 

 above, punctured beneath. Black; apical abdominal segment 

 ferruginous-red. Wings hyaline, nervures black, stigma fuscous. 

 Third cubital cell long, receiving the second recurrent nervure 

 near the middle of its lower margin. Length 13 mm. 



Hab. — Swan River, W. A. Type in Oxford University Museum. 



197. T. nubilipennis Sm. 



Thynnus nubilipennis Sm., Descr. n. sp. Hym. p. 167, n. 24. 

 1879(^2). 



£. Clypeus short and broad, truncate at apex. The whole 

 insect finely punctured, more strongly on abdomen than else- 

 where, median segment almost smooth. Abdomen elongate, 

 first segment narrower than second, segments 2-4 depressed at 

 base. Epipygium longitudinally rugose. First ventral segment 

 with an oblique triangular truncation at apex, segments 2-5 sub- 

 tuberculate near apical angles. Hypopygium with a spine on 

 each side near base, thence gradually narrowed and rounded at 

 base of apical spine. 



£. Head deeply but rather sparsely punctured, with a shallow, 

 smooth depression on each side between base of antennas and eyes. 

 Pronotum rectangular, much broader than long, finely and closely 

 punctured, with a few large punctures from which spring long 

 hairs along the anterior margin. Median segment and abdomen 



o o o 



rather strongly punctured, median segment very short, oblique 

 from just behind mesonotum. First abdominal segment with a 

 transverse carina just before apex, and apical margin slightly 

 raised; second segment with six transverse^carinse, including the 

 raised apical margin. Fifth ventral segment longitudinally 

 rugose-striate; sides of abdomen thinly clothed with long hairs. 

 Pygidium elongate, truncate posteriorly, contracted before apex 



