IV 



TABLE OF CONTENTS. 



PART SECOND.— SYSTEMATIC DISTRIBUTION OF 

 THE ORTALID^E. 



TAGE 



FIRST DIVISION: ORTALIDiE HAVING THE FIRST LONGI- 

 TUDINAL VEIN BRISTLY OR HAIRY .... 



PAGE 



First Section: PYRGOTINA . 33 



Second Section: PLATVSTO- 

 MINA . 



36 



Third Section : CEPHALINA . 



Fourth Section : ORTALINA . 



Fifth Section : PTEROCAL- 

 LINA 



32 



48 

 52 



68 



SECOND DIVISION: ORTALIDiE HAVING THE FIRST LON- 

 GITUDINAL VEIN BARE 



First Section : ULIDINA 



63 



64 | Second Section: RICHARDINA 6Q 



PART THIRD.— THE NORTH AMERICAN 

 ORTALID.E. 



FIRST DIVISION: ORTALIDIE HAVING THE FIRST LONGI- 

 TUDINAL VEIN BRISTLY OR HAIRY 



First Section : PYRGOTINA . 72 



Gen. I. Pyrgota Wied. . 72 



1. millepunctata Lw. 9 • 73 



2. undata Wied. $ . 2 • 77 



3. vespertilio Gerst. % . 79 



4. pterophorina Gerst. 9 • 81 



Second Section: PLATYSTO- 



MINA .... 83 



Gen. I. Amphicnephes nov. 



gen. . . . .83 



1. pertusus nov. sp. % . 9 84 



Gen. II. HniERoiissA n. g. . 85 



1. pretiosa n. sp. % . 85 



Gen. III. Rivellia R. Desv. 87 



1. conjnncta n. sp. 9 • 88 



2. viridulans R. Desv. % . 9 88 



3. quadrifasciata Macq. % 90 



4. variabilis n. sp. % 



5. flavimana 11. sp. % . 9 • 



6. micans n. sp. 9 • 



7. pallida n. sp. % . 9 



Gen. IV. Stenopterina Macq. 

 1. cserulescens n. sp. $ . 



72 



91 



92 

 94 

 95 



96 



97 



Gen. V. Mischogaster Macq. 98 



Gen. VI. Myrmecomyia R. 



Desv 99 



I 1. myrmecoidea Lie. % . 9 100 



Third Section: CEPHALINA . 102 



Gen. I. Tritoxa n. g. . . 102 



1. flexa Wied. %.$ .102 



2. incurva n. sp. % . 9 • 104 



3. cuneata 11. sp. $ . 9 . 107 



Gen. II. Camftonedra Macq. 108 

 1. picta Macq. $.9 .109 



