NEW SPECIES OF SYNTOMID^. 143 



Rhyncopyga hraconida. 



Small white points below the eyes, on edge of patagia, and on 

 base of fore wing below. Head and thorax dull lustrous green. 

 Abdomen with the two basal segments crimson, the rernaining seg- 

 ments greenish black. Legs greenish black, the third pair very long 

 and white beneath at the joint of tibia and femur. Fore wing with 

 basal lialf dark lustrous green, the outer half dull blackish. A large 

 orange spot on costa beyond the cell. Hind wing blackish, slightly 

 diaphanous. Expanse, 28 mm. 



Hab. Alto da Serra, Santos, Brazil, March 6th, 1910 (W. J. 

 Kaye. 



Mystrocneme sectum, ii. sp. 



Frons white. A white spot on the shoulder. Thorax black, with 

 a large metallic-green spot in centre ; patagia with metallic-green 

 spots. Collar with two metallic-green spots. Abdomen with a white 

 sublateral spot at base, and with metallic-green lateral stripes. Fore 

 wing black, with a small hyaline streak just below the cell. Hind 

 wing entirely black. Expanse, 28 mm. 



Hab. Potaro Eiver, British Guiana, March 22nd, 1904 

 (C. B. Roberts). 



Mystrocneme riibricorpus, n. sp. 



Frons white. Collar with two green spots. A crimson spot at 

 base of shoulder. Thorax black ; patagia with slender metallic-green 

 stripes. Abdomen with first and second segments scarlet, the third, 

 fourth, and fifth scarlet laterally, black dorsally ; the remaining seg- 

 ments black, with some metallic-green scaling laterally. Fore wing 

 hyaline ; the apex broadly black ; a large black square-shaped patch 

 at tornus ; inner margin broadly black ; the costa narrowly black. 

 Hind wing hyahne, with a broad black margin ; the cell area black. 

 Under side of hind wing with metallic-green scaHng at base of costa 

 and in cell. Tibia with metallic-green scales on outside. Expanse, 

 28 mm. 



Hab. Potaro Pdver, British Guiana, April, 1903 (C. B. 

 Roberts). 



Mystrocneme albicorims, n. sp. 



Black ; frons, shoulders, and coxae with white spots. Legs out- 

 wardly with metalHc-green areas. Abdomen with the basal segment 

 white, and the second segment edged internally with white ; laterally 

 these two segments are overlaid with pale metallic-green ; the other 

 segments green laterally and black dorsally. Abdomen beneath with 

 a central broad whitish stripe, and a short whitish lateral streak on 

 two first segments. Fore wing hyaline, with a broad black apical 

 patch, and a broad black area across cell. Hind wing hyahne, the 

 margins broadly black. Expanse, 28 mm. 



Hab. Potaro River, British Guiana, June, 1903 (C. B. 

 Roberts). 



Napata subjiavescens, n. sp. 



Base of antennae with small white points ; front edge of patagia 

 orange. Thorax and abdomen blackish brown. Fore wnng brownish 



