BACCHA. 



?>7 



13. Baccha dolosa, s.p. n., $ 2 . (Tab. t figg. 7, d ; 7 a, head in profile ; 7 b, 

 head from in front.) 



Face pure light yellow. Frontal triangle hlack, the narrow orhital bordcr opaque yellow, the pile black ; front 

 narrow above, opaque black, on either side a narrow orbital horder ; reaching nearly to the ocelli, opaque 

 yellow, the pile black ; ocelli situated well forward, beyond which the front is shining metallic. Sides 

 of face whitish-pollinose. First two joints of the antenna? black ; third joint dark brown, not twice as long 

 as wide. Orbital cilia white ; occiput white-pollinose. Thorax deep blue-black, but little shining, with 

 four feebly apparent black stripcs. Scutellum yellowish-brown, its base narrowly light sulphur-yellow ; 

 a row of depressed white hairs on the margin. Abdomen brown and black, with some bluish reflections : 

 a spot on either side of the base of the second segment, and a basal fascia on the third, yellow ; seeond 

 segment elongate, its width distally a little moro than half the width of the distal end of the next 

 segment. Hypopygiuin and tip of femalo abdomen red. Legs deep brown or black ; the four front tibia; 

 and the hind metatarsi and the following joint light yellow. Wings : in the male the subcostal cell and 

 the tip of the marginal and submarginal cells brown ; in the female the costal cell also, and the larger 

 parfc of tbe marginal cell, extending across the third vein, at the base, brown ; the wings elsewhere 

 nearly hyaline. 



I.ength 14-15 millim. 



Hab. Mexico, Omilteme 8000 feer, Xucumanatlan 7000 feet, and Amula 6000 feet, 

 . all in Guerrero (H. H. Sinith) ; Guatemala, Cerro Zunil 4000 to 5000 feet (Champion) . 



Five speciraens. 



14. Baccha lugubris, sp. n., s 2 . 



Male. Frontal triangle blue-black, somewhat shining, with black pile ; lunule red, with a black spot in the 

 middle. Anteunaa brownish-black ; third joint geutly oval. Face in the middle steel-blue, on the sides 

 yellow, covered with whitish pollen. Mesonotum shining bronze or brownish-bronze ; scutcllum coloured 

 like the mesonotum or somewhat yellowish. Pleurse shining blue, in the middle somewhat yellowish and 

 covered with whitish pollen. Abdomcn slender, the seeond segment cylindrical ; opaque or subopaque 

 black, the base or anterior angles of segmcnts 2-4 red, the posterior margins of the second aud third 

 segments, and the first segment, more shining, oftcn blue. Legs reddish-brown,the front pair and the base 

 of the middlc tibias more reddish or yellowish ; the hind tibiae and the basal two-thirds of the hind meta- 

 tarsi black, thc remainder of the hind tarsi light yellow. Wings strongly blackish, less intense on the 

 posterior part. 



Female. Front very narrow above, opaque or subopaque black, with the vertex and sides helow shining blue ; 



pile black. Abdomen less slender. Wings with a large subhyaline triangular space on the outer 



postcrior part. 

 Length 11-14 millim. 



Hab. Mexico, Venta de Zopilote 2800 feet and Chilpancingo 4600 feet, both in 

 Guerrero, Atoyac in Vera Cruz, Teapa in Tabasco (H. H. Smith). 



Twenty-two specimens. 



15. Baccha aenea, sp. n., <s . (Tab. I. figg. 10, 4 ; 10 a, head.) 



Face shining bronze, clothed upon the sides with white pollen ; frontal triangle shining black, on the margins 

 covered with yellowish pollen. Antenna3 red ; third joint broadly black above, in shape elhptical, about 

 twice as long as broad. Mesonotum and scutellum shining bronze-green ; pleurae more bluish-bronze, with 

 white pollen in the middle. Abdomen : second and third segments opaque black, with the base and sides 

 shinino- and the base red ; fourth segment shining, the base with a red or yeUow cross-band ; fifth segment 

 and hvpopygium shining, somewhat metallic, black; second segment flattened-cylindrical, a little more 



