Mr. R. E. Turner o/t Fossorial Hymenoptera. 151 



Homonotus {Gilbertella) umbraticus. Turn. 

 Planiceps umbraticus, Turn. Proc. Zool. Soc. London, p. 337 (1910). $ . 



Tiie second cubital cell is very long, receiving the re- 

 current nervures near the base and near the apex. As in 

 other Australian species of Homonotus, the base of the first 

 cubital cell emits the stump of a nervure into the median cell. 

 The submedian cell is a little shorter than the median. 

 Calcariaof the intermediate and hind tibiae very long, slightly 

 exceeding in length the basal joint of the tarsi. 



Hab. Mackay, Queensland ; January and February. 



Homonotus [Gilbertella) dhparilis, sp. n. 



cJ. Niger; antennis subtus, tibiis anticis iutermediisque subtus, 

 tarsisque fusco-ferrugineis ; calcaribus albidis ; alis fusco- 

 hyalinis, venis nigris. 

 Long. 5 mm. 



(J. Clypeus very broadly rounded at the apex, covering 

 the mandibles ; second and third joints of the flagelluui sub- 

 equal ; front shining, moderately convex. Posterior ocelli 

 about twice as far fiom each other as from the eyes ; temples 

 very narrow. Pronotum narrowed anteriorly, scarcely as 

 long as the mesonotum ; median segment a little longer than 

 broad, emarginate at the apex, the apical angles produced 

 into long stout spines. Second abdominal segment a little 

 longer than the first ; the two apical ventral segments 

 strongly compressed laterally. The longest calcar of the hind 

 and intermediate tibiaj not quite as long as the basal joint of 

 the tarsus ; hind tibiaj moderately spinose ; tarsal ungues 

 rather feebly bifid near the apex. Two cubital cells ; the 

 second abscissa of the radius twice as long as the first ; 

 the recurrent nervures received at one-quarter from the base 

 and at one-quarter from the apex of the second cubital cell; 

 second transverse cubital nervure received just before the 

 middle of the radius. Submedian cell distinctly longer than 

 the median; cubitus of the hind wing originadng far beyond 

 the transverse cubital nervure. 



Hab. Mlanje, Nyasaland {S. A, Neave) ; May. 



The second cubital cell is much shorter than in umbraticus 

 and the recurrent nervures are received much nearer together. 

 In umbraticus the second transverse cubital nervure is 

 received just before two-thirds from the base of the radius. 

 The spines at the apical angles of the median segment are 

 longer in this species than in anj other known to me. 



