PHALACROMYIA. 



41 



Dark-colonred small species bellula, sp. n. 



3. Epistoma much produced ; proboscis longer than the femora . . 4. 

 Epistoma but little produced; proboscis not loDger than the 



femora; greenish species vaga, Wiedem. 



4. Yellowish-red species ; mesonotum without black pulchra, sp. n. 



YelJow species; abdomen banded with black; mesonotum with 



blackstripes pica> Sc hiner. 



1. Phalacromyia pulchra, s P . n., a 2 . 



Phalacromyia pulchra, Verrall, in litt. 



Translueent ainber-coloured. Front narrow \ pile black. Antennse about one third the length of the face, 

 red ; the third joint broader at its base, and with a long shallow emargination beyond, less dilated at the 

 base m the female ; arista thinly plumose. Face projecting strongly forwards into a long slender cone ; 

 the hne of the cheeks below forms a gentle curve, and is about as long as the hind femora ; in colour 

 more yellowish ; on either side a brownish stripe running from the eye to the oral margin. Proboscis 

 long, with long labella. Mesonotum shining red, thinly yellowish- and blackish-pilose ; pleurae a little 

 lighter-coloured ; pectus black. Sides of the mesonotum and margin of the scutellum with well-developed 

 bristles. A narrow band on the posterior margin of the second abdominal segment and a broader one on 

 the hind part of the third, due to short black hairs, and more conspicuous in certain lights ; the short 

 pile elsewhere is reddish-yellow ; the second and third segments have a very narrow brownish hind 

 margin, not due to hair. Legs reddish-yellow ; hind tibi® with a brownish ring. Wings strongly tiuged 

 with brownish-yellow, with darker clouds on the cross-vein ; marginal cell wide open. Eves pilose 



Length 11-12 millim. 



Hab. CostaEica, Eio Sucio (Bogers). 



This insect is evidently closely allied, both in structure and in coloration, to P. pica 

 (picta ?), Schiner, from Colombia, and I at first felt disposed to identify it with that 

 species. The abdomen is short and broad, and has the first and fourth segments very 

 short: it is possible that Schiner may have mistaken the hair-bands for fascise of the 

 ground-colour. The length of his four specimens is given at about 8 millim., whereas 

 in these Costa-Bican examples it is nearly 12, and, counting the epistoma, over 13 

 millirn. The proboscis is much shorter than the length of the body ; there is no black 

 on the thorax, save on the pectus; and the mesonotum especially is not clothed with 

 "dichte, fuchsrothliche Behaarung." 



2. Phalacromyia pica, <$ . 



? Phalacromyia pica, Schiner, Reise der Novara, Diptera, p. 355, t. 4. figg. 6,6a (picta) '. 



Very like P. pulchra, but the colour is light honey-yellow ; the mesonotum has three black stripes, the lateral 

 ones interrupted ; the second abdominal segment has a narrow black stripe behind, the third segmont a 

 broad stripe connected in the middle with the black of the seeond, and the fourth segmont has a deep 

 black diamond-shaped spot extending to the front margin. The wings are light yellow, with a large 

 blackish cloud at the distal end and brown clouds on the cross-veins. The legs are light yellow, with a 

 black ring on the hind tibiae. 



Length 9 millim. 



Hab. Mexico, Misantla (F.D. Godmanl—Sovnn America, Colombia *. 

 biol. centr.-amee., Dipt., Yol. III., Decemher 1891. g 



