514 CALIFORNIA ACADEMY OF SCIENCES. 



$47. Abd. 6 30-32, ? 33. Hind wing S 38-42, ? 42. 

 Pter. front wings 3, hind wings 2 mm. Sup. app. S 5.5; 

 app. $ 4. 



Distrihatiou. Mexico (Baja California, as above, Mat- 

 amoras, Mazatlan), Panama, Texas, Florida, West Indies. 



24. Tramea longicauda Brauer? var. PI. xvii, figs. 

 88, 89. 



T. I. Brauer, Verb. Zool. Bot. Ges. Wien, xvii, p. 812, 1867. 

 2 £ San Jose del Cabo, one May, the other October, 1893. 



Labrum black in the middle, brownish each side; la- 

 bium brownish-yellow, middle lobe only black; epistoma 

 brown; frons superiorly and vertex with a metallic blue 

 reflection. .Thorax light brown, a black spot on the 

 lower parts of the mesepimeron and of the metepimeron, 

 and a black line on the upper ends of the humeral and 

 second lateral sutures. Abdomen (probably reddish-) 

 brown, 8-10 blackish dorsally. 



Superior appendages reddish-brown, 3.5 mm. long and 

 hence longer than 9-}- 10 (2 mm.) but not as long as 8 -f- 

 94- 10 (4.5 mm.), with an inferior row of about ten denti- 

 cles on the basal half. Inferior appendage half as long 

 as the superiors, reaching beyond the denticles. An- 

 terior lamina least prominent, its apex slightly bilobed; 

 hamule more prominent than lamina or genital lobe, sim- 

 ple, apex acute, curved outwards to form a hook. 



Wings slightly smoky when held over white paper, 

 veins reddish near base, brownish apically. Hind wings 

 with a brown basal band, veined with yellowish, com- 

 mencing a little in front of the submedian vein, reaching 

 within a cell of the anal "angle"; outer edge of this 

 band nearly on the level of the median cross-vein, inner 

 margin not attaining the anal margin of the wing, which 

 is here bordered by a pale obscurely -yellowish tract, 



