TABLE OF CONTENTS. 



PART SECOND. SYSTEMATIC DISTRIBUTION OF 

 THE ORTALID^E. 



PAGE 



FIRST DIVISION: ORTALID^E HAVING THE FIRST LONGI- 

 TUDINAL VEIN BRISTLY OR HAIRY , 32 



FIRST SECTION : PYRGOTINA . 33 



SECOND SECTION: PLATYSTO- 

 MINA 36 



THIRD SECTION: CEPHALINA . 48 



FOURTH SECTION : ORTALINA . 52 



FIFTH SECTION : PTEROCAL- 



LINA . 58 



SECOND DIVISION: ORTALID.E HAVING THE FIRST LON- 

 GITUDINAL VEIN BARE 63 



FIRST SECTION : ULIDINA 



64 I SECOND SECTION: RICHARDINA 66 



PART THIRD. THE NORTH AMERICAN 

 ORTALID.E. 



FIRST DIVISION: ORTALID^E HAVING THE FIRST LONGI- 

 TUDINAL VEIN BRISTLY OR HAIRY 



FIRST SECTION : PYRGOTINA . 



Gen. I. PYRGOTA Wied. 



1. millepunctata Lw. 9 . 



2. undata Wied. $ . 9 



3. vespertilio Gerst. $ 



4. pterophorina Gerst. 9 



SECOND SECTION: PLATYSTO- 

 MINA .... 



Gen. I. AMPHICNEPHES nov. 



gen 



1. pertusns nov. sp. $ . 9 



Gen. II. HIMEROESSA n. g. . 

 1. pretiosa n. sp. $ 



Gen. III. RIVELLIA R. Desv. 



1. conjuncta n. sp. 9 



2. viridulans R. Desv. $ . 9 



3. quadrifasciata Macq. 



83 



83 



84 



85 

 85 



87 



4. variabilis n. sp. 



5. flaviuiaiia n. sp. 'J, 



6. inicans n. sp. 9 



7. pallida u. sp. . 9 



72 



91 

 92 

 94 

 95 



Gen. IV. STENOPTERINA Macq. 96 



1. cserulescens n. sp. . 97 



Gen. V. MIPCHOG ASTER Macq. 98 



Gen. VI. MYRMECOMYIA 7?. 



De*v 99 



1. myrmecoides Lw. ^ . 9 100 



THIRD SECTION : CEPHALINA . 102 



Gen. I. TRITOXA n. g. . . 102 



1. flexa Wied. .9 .102 



2. incnrva n. sp. . 9 104 



3. cnneata n. sp. . 9 . 107 



Gen. II. CAMPTONEPRA Macq. 108 



90 i 1. picta Macq. % . 9 



109 



