118 Mr. R. E. Turner on Fossorial Ilymenoptera. 



The typical form is from Kiiraiicln, North Queensland. 

 A pair sent from the Qucenslaml Museum differ in colour 

 from the typical form, the male having" the four apical dorsal 

 segments of the abdomen wholly ferruginous red, whereas 

 the Kuranda specimens have the same segments brownish 

 yellow more or lo.-^s marked with black, the fourth segment 

 being often wholly black. Tiie female has the abdomen 

 more strongly marked with yellow than in the type, but 

 Kuranda specimens vary much in this respect and in one 

 specimen the yellow mai kings are almost as large as in the 

 Brisbane form. The only structural differences are the 

 slightly shorter hypopygium of the male, and the slightly 

 narrower head of the female in the Brisbane form. These 

 differences may prove to be of subspecific value. 



Tmesothrjnnus ingrediens, sp. n. 



S . Xiger ; clypeo linea marginali utriiiquc, niandibulis basi, 

 macula obliqua utrinque inter atitennas, pronoto linca transversa 

 utrinqiie antice, postscutelloque albido-tiavis; alis hyalinis, veuia 

 nipris. 



$ . Uruneo-ferniginea ; segmento mediano nigro ; scgmcntis 

 abdomiiialibus tertio, quarto quintoque plus minus infuscatis ; 

 Begmcnto dorsali secundo transverse quadricarinato. 



Long., 6 9 mm., 2 6 mm. 



J. Head and thorax closely and rather finely jiunctured, 

 abdiimeii more sparsely punctured, median segment shining, 

 very minutely punctured. (Jiyj)eus truncate at the apex; 

 antennae about as long as the thorax and median segment 

 combined, of even thickness througiiont, the prominence 

 between the anteJinre almost obsolete. Head very thin and 

 flat, Anteiior margin of the pronotum straight and slightly 

 raised, median segment rounded. Abdominal segments 

 strongly constricted at the base, the seventh dor.-^al segment 

 very broadly rounded at the apex. Hypopygium witli 

 parallel sides, brcadly and shallowly emarginate at the aj)ex, 

 with a long apical spine. Second abscissa of the radius 

 longer than the third, second recurrent nervure received at 

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



9 . Head iu'oader than long by about one-third, the sides 

 slightly sinuate in the middle ; eyes small, oblique, narrowly 

 ovate, neaily touching the base of the mandibles; front 

 sparsely punctured, without a sulcus, vertex almost smooth; 

 mandibles long and falcate, not toothed. Pronotum finely 

 punctured, much broader than long, distinctly narrowed 

 posteiiorly, the anterior angles prominent; scutellum broader 



