TRAMEA. 145 



with a large, hyaline spot; the pterostigma longer; twelve ante- 

 cubitals ; nine postcubitals ; four discoidal areolets. 



Length 43 — 47 millim. Alar expanse 78 — 90 millim. Ptero- 

 stigma 3 millim. 



Hah. Pecos River, Western Texas (Capt. Pope) ; Matamoras, 

 Mexico. 



I possess males with the fuscous spot of the wings almost like 

 that of T. Carolina, but they are not a different species. 



I have a female from North America? very much mutilated, 

 without head or abdomen, of the size of T. onusta, but the wings 

 are narrower, the basal spot of the wings small and entire. Per- 

 haps it is a different species. 



4. T. lacerata ! 



Tramea lacerata Hagen 1 



Brownish-black; labrum black (£), or margined with black(9); 

 face lurid, front superiorly shining violet, vertex shining violet (J"), 

 or yellow in front ( 9 ) ; thorax with a violet tinge ; base of the 

 abdomen sometimes pruinose, the seventh segment above with a 

 quadrangular, yellowish-green spot (J"), or with double lines upon 

 segments 2 to 5, replaced upon segments 6 and 7 by a large, quad- 

 rangular, posteriorly narrowed spot, yellowish-green ; feet black ; 

 superior appendages very long, slender ; hamule short, not reach- 

 ing as far as the genital lobe ;- vulvar lamina half the length of the 

 segment upon which it lies, excised within and at the apex ; ante- 

 rior wings with two fuscous, basal spots, posterior wings with a 

 broad, basal, fuscous band, which is ragged exteriorly, and very 

 deeply emarginated interiorly; pterostigma long, brownish-black; 

 membranule snow-white; ten antecubitals ; nine postcubitals; four 

 discoidal areolets. 



Length 44 — 49 millim. Alar expanse 84 — 94 millim. Ptero- 

 stigma 4 millim. 



Hab. Pecos River, Western Texas (Capt. Pope) ; Matamoras, 

 Mexico; Maryland (Uhler). 



5. T. abdominalis ! 



Libellula abdominalis Ramb. ! Neuropt. 37, 8. — Libellula basalis Selys ! 

 Poey, Ins. Cuba, 441. 



Rufo-fuscous, front and vertex rufo-fuscous ; feet black ; three 

 apical segments of the abdomen with a black, dorsal fascia ; supe- 

 10 



