1:> 



o 



However, before we transfer oi tnasse the heteroirenoous 

 speeies described under Frusopis to Ilylaeus it will be well 

 to segregate some of the speeies into proper genera. 



'riic- following table will serve to distingiiisli some genera, 

 described species of most of wliicli have been })laeed in Prusopis. 

 This work of segregation is far from complete. Certaiiilv most 

 of the Australian species described as Prosopis will iioi fall 

 in any properly defined g(Mius If i/hicii.s. Neither matei-ial at 

 hand nor time permits an investigati(»n of all the genera which 

 should fall into the llylaeidac. 



TABLE OF SO:\rE GENERA OF IIVLAEIDAE, 



1. .Mandibles flattened at apex or tridentate or bidentatc 



in both sexes 2 



^Jandibles acnte at apex, edentate, elongate, nearly straight, 

 propodenm rugose, angulate at the sides and snbcarinare, tIu^ 

 triangular basal area well (h^fined with its sculi)ture different 

 fi-oni the rest of the ]n-o])odeum, first recurrent nervure received 

 by the first ciibital cell or interstitial, the second interstitial 

 with the second ti'ansverse cubitus or received hcijond it, supra- 

 clypeal area shorty bounded by lateral carinae. Face l)road, 

 usually broader than long, elypeus trapezoidal, about as high 

 as broad at its anterior margin, labrum triangular. 



$ Stipes greatly produced a])i('ally into a slender process 

 neai'ly as fai' beyond the apices of the sagittae as their 

 length, eighth stcM'uite with a sIkuM ronn<le(l median ])rocess. 



( 'ol(»ration. Thorax black, frecjuently with yellow and fer- 

 rnginons markings, legs and first segment of the abdomen 

 nsnall\- more or less ferruginons NotJiylaeus n. gen. 



2. .Mandibles bidentato at apex 4 



•Mandibles tridentate at apex 



cei'tain .Vustralian "Pmsopis" 



.Mandibles flattened at a])e\. not toothed 3 



• >. .Mandibles not channelled, trnncate al the a])ex, snpra- 

 (dy])eal area not angldate between the bases of the 



