298 PROCREDTNGJS OF THE ACADEMY OF [1894. 



9— iletathorax posteriorly not eniargiiiute, not produced; anterior 

 femora swollen, their tarsi also rather thick ; abdomen subcom- 



pressed ri.AXiCEPS Latr. 



^letathorax i)osteriorly strongly emarginate, produced on each 

 side into a strong tooth; fore femora and tarsi not thickened; 

 alidomen not at all compressed Aponrs Spin. 



SPHEGID^. 



I would divide tliis vast family into five subfamilies as follows: 

 Spheginte, PemphredoniuiTe, Bembicinte, Oxybelime, and Crab- 

 roniuic. I have thought it best to unite under one head the Lar- 

 ridte, Bembicidse, Nysonida\ Mellinida^ and Philanthidte, as it is 

 impossible to find characters by which these families (so-called) can 

 be limited, even as subfamilies. The reader is referred to Hand- 

 lirsch's paper on Nysson and Bemhex.^^ It may seem out of place 

 to put the FemphredonintTS close to the Sphegina? ; yet I feel justified 

 in doing so on account of tlie abdominal petiole which is peculiar to 

 both subfamilies. 



Abdomen connected \\ ith the thorax l»y a slender pedicel of variable 

 length, and never sessile with the following segment. 

 Intermediate tibite with two apical spurs; claws nearly always 



more or less dentate within SPHEGIN/I^]. 



Intermediate tihiic with but one apical spur; claws never dentate 



within PEMPHREDONIN.E. 



Abdomen never connected w ith the thorax by a slender pedicel, at 

 the most subpetiolate as in Me/li/u(s. 

 ;More than one submarginal cell, if not, then the eyes are emar- 

 ginate within; neuration of posterior wings complete. 



BEMBICIN.E. 



Onlj-oue submarginal and two discoidal cells (e^'es entire). 



Metathorax with a long projection'-' at base; postscutellum with 



a squama on each side; submarginal cell confluent with tirst 



tfiscoidal cell; eyes elongate-ovate, fully three times longer 



than they are broad medially and converging towards the 



vertex . " OXYP.ELIN.E. 



Metathorax and postscutellum without spines or squamte ; sub- 

 marginal cell not confluent with the first discoidal cell; eyes 

 very broad, not more than twice as long as the width of their 

 broadest jiart and strongly diverging towards the vertex. 

 CRABRONIN.E. 



'' Sitzuugsb. K. K. Akud. der Wisseii., Wien, XCY, Abtli. 1. 



12 This is variously shaped, being sometimes bifurcate and agaiu spinose. 



