141 



— Ocidi maris in fronle conligni, 



Gcnus 1. DIAPIIOSIIJS Mgn. 



Spec: Typ: DiApnoRus Oculatus Meig, 



KB. Antennce lUriusque sexus in parlesupera capilisinsertae. 



— OcuH maris et focminae non conligui in fronte- 



Gcnu.fi 9\ ARGYRJl Maeq. 



Spec: Typ: Dolicopus Diapuanus Fabr. 



AA. Vena prima longituclinalis costalem attingens satis ant 

 valde ante transversam ordinariam, et si minus anfe 

 tunc arista dorsualis distincte, non sub-apicalis. 



C. Vena transversa ordinaria satis proxima margini postici!» 

 alarum, scu longior distantia ab apice quintae longi- 

 tudinalis, aut ad sumraum gequidistans et tunc venn 

 longitudinalis quarta sub apicem alae aut in apict^ 

 ipso sed non manifeste anteapicem costalem altingens. 



fv Femora antica subtus distincte spirinlosa. 



Gcnics 5. AHOPI.O^S^RUS Xlibl. 



Spec: Typ: Hydrophorus REGns Fabr. 



EE. Femora anlica non spinulosa. 



Gcnns 4. EI^iasSOPBSORCS rall. 



Spec: Typ: Hydrophorus Notatus Meig. 



CC. Vcna transversa ordinaria satis dislans a margine po- 

 stico alarum aut saltem brevior distanlia ab apice 

 quinl(2 longitudinalis, et si raro fere aeque longa;, tnnc 

 vena quarta lojigilwlinaUs costakm atlingens niani- 

 feste ante apiccm ah?. 



