TRAMEA. 143 



antecubitals; seven postcubitals; four discoidal areolets (only three 

 at the triangle). 



Length 47 millini. Alar expanse 88 millim. Pterostigma 4 

 millim. 



Hab. Indiana (Say); Pecos River, Western Texas (Captain 

 Pope) ; Matarnoras, Mexico. 



TRAMEA HAGEN. 



Eyes connected in a short space ; posterior lobe of the prothorax 

 small, entire ; abdomen stout, cylindrical, slightly carinated ; at- 

 tenuated at the apex, segments 3 and 4 with transverse sutures ; 

 feet long, slender ; base of the posterior wings triangularly dilated ; 

 pterostigma small, trapezoidal ; first sector of the triangle of the 

 anterior wings, almost straight ; triangle long, narrow ; caudal 

 appendages very much elongated, slender ; genital organs of the 

 male a little prominent, anterior lamina recurved, entire, hamule 

 cylindrical, the external branch elongated, no internal branch ; 



vulvar lamina large, bifid, obtected, the segment following sub- 

 cariuated beneath. 



1. T. Carolina! 



Libellula Carolina Linne, Centur. Insect. 28, 85 ; Amoen. Acad. VI, 441. 

 Syst. Nat., ed. XII, 904, 17 ; ed. XIII, V, 2624, 17. Drury, Ins. I, 

 113, pi. xipviii, fig. 1. Fab. Syst. Ent. 424, 23; Sp. Ins. I, 524, 

 30; Mantiss. Ins. I, 338, 33; Entom. Syst. 11,382,41. Burm. ! 

 Haudb. II, 852, 26. Say, Jour. Acad. Philad. VIII, 19, 2. Ramb. ! 

 Neuropt. 32, 1. Selys, Poey, Ins. Cuba. 440. 



Rufo-fnscous ; front superiorly, and vertex of the males brassy- 

 purple ; feet black, base of the femora rufous ; abdomen sometimes 

 pruinose, the three apical segments with a broad, dorsal, black 

 band ; superior appendages of the male black, the_basal half ru- 

 fous, as long as the tyo apical segments; the inferior appendage 

 reaching beyond the denticulated portion of the superiors ; hamule 

 not exceeding the genital lobe ; vulvar lamina shorter than the 

 segment upon which it lies, excised within ; wings hyaline ; base 

 of the anterior ones hardly yellow, posterior ones with the basal 

 third fuscous, veined with yellow, the middle of the anal margin 

 having a hyaline spot ; pterostigraa small, fuscous ; membranule 



