2 



MESSRS. R. E. TURNER AND J. WATERSTON ON THE 



tarsi, and the strongly bent recurrent nervure. In one or two 

 aberrant species one or more of these characters may be only 

 feebly developed, but the long labrum is always present. The 

 best account of the genus is given by Cameron, but his description 

 of the generic characters is founded on a single species, and one 

 or two charactei's given are merely specific. Thus the petiolar 

 area and areola are usually separated, not confluent, an(l the 

 nervulus is often more or less postfnrcal, as noticed by Morley. 

 Cameron is inclined to place the genus in the Ichveumoniiice, as 

 a separate tribe; the great objection to this placing is in the 

 position of the spiracles on the petiole only a little behind the 

 middle, and much neai'er to each other than to the apex of 

 the segment. • It seems, however, on the whole, a more natural 

 position tlian either among the Tryphonince, which it was 



placed by Brulle, or near Bancliiis^ where Morley is inclined to 



Text-figure 1. 



Labium moiitivaytim Turn. & W'tr^t. Thorax, proitudt oii, aiici ja-tiole 

 ill p.olile. 



place it. We give a full account of the sculpture of the median 

 segment (text-figs. 1, 3, and 10), as far as it is common to all the 

 species : carina between the short ba,sal ai-ea and areola usually 

 indicated by short lateral stumps ; areola and petiolar area- some- 

 times confluent ; pleural and juxta-coxal area? confluent anterioi-ly, 

 but separated up to | or beyond posteriorly. The surface of the 

 basal area and areola is smooth, more or less rugulose round the 

 sides ; of the external area smooth or finely })imctui-ed : the an- 

 terior part of the spiraculai- area is also punctured, generally rathei* 

 strongly so. The othei- areie vary in scul[iture, the juxta-coxal 

 always showing some strong ridges, indicated at least anteriorly. 

 Sculpture of the niale usually coarser than in the female. The 

 sculpture of the are?e is liable to considerable individual variation 

 in intensity. 



Species of Thynnidie of the genera E'lronc and Tachi/iwiiii/la 



