LEPTHEMIS. 161 



row, slender, equal, triquetral, the base vesicle-like, compressed ; 

 feet long, stout ; the first sector 'of the triangle sinuated ; the tri- 

 angle narrow, short ; appendages short ; male genital organs hardly 

 prominent ; the vulva obtected, the segment following it carinated 

 in the middle, bituberculated ; the sides of the eighth segment of 

 the female entire. 



1. Lep. vesiculosa! 



Libellula vesiculosa Fab. Syst. Ent. 421, 7 ; Sp. Ins. I, 521, 9 ; Mant. Ins. 

 I, 336, 9 ; Entom. Syst. II, 377, 12. Burm.! Handb. II, 857, 54. 

 Ramb.! Neuropt. 50, 26. Selys! Poey, Ins. Cuba, 443. Libellula 

 acuta Say, Jour. Acad. Philad. VIII, 24, 12. 



Yellowish-green ; head and thorax uniform in color ; feet black ; 

 femora yellowish-green, lineated above and below with black ; ab- 

 domen yellowish-green, the base immaculate, lineated and margined 

 with black, segments 3 to 6 with quadrangular, apical, blackish- 

 fuscous spots ; appendages yellowish ; wings narrow, hyaline, base 

 of the posterior ones subochraceous ; pterostigma long, yellowish; 

 membranule black ; sixteen antecubitals ; twelve postcubitals; three 

 discoidal arcolets. 



Length 53 — 63 millim. Alar expanse 74 — 90 millim. Ptero- 

 stigma 5 millim. 



Hah. Matamoras, Mexico; Cuba; St. Domingo; St. Thomas; 

 Guiana ; Bahia, Rio, Pernambuco, Brazil. 



2. Lep. heematogastra ! 



Libellula haematogastra Burm. ! Handb. II, 837, 55. 



Red ; labium yellowish, with a middle, black stripe ; front brassy- 

 fuscous (c?); feet black, the femora red within; abdomen red, or 

 with the sutures and the apex of the segments fuscous ( 9 ) ; ap- 

 pendages red ; wings hyaline, the base of the posterior ones with 

 a fuscous spot ; pterostigma red ; vulvar lamina triangular, re- 

 curved; 14 — 15 antecubitals; twelve postcubitals; three discoidal 

 areolets. 



Length 45 — 50 millim. Alar expanse 70 — 74 millim. Ptero- 

 stigma 3J — 4 millim. 



Hab. Georgia (Abbot ; Zurich Museum) ; Surinam ; Pernam- 

 buco, Brazil. 

 11 



