258 DIPTERA OF NORTH AMERICA. {PART II. 



anterior branch of the fourth longitudinal vein diverges from this 

 at an angle which approaches a right one and turns afterwards 

 towards the margin at a rounded angle, which is perceptibly 

 larger than a right one ; it reaches the margin before the apex 

 near the tip of the third longitudinal vein ; posterior transverse 

 vein oblique, distinctly sinuated. 

 Hob. Cuba, (Riehl.) 



7. P. jucimdus LOEW. % and 9- Viridis, vel ex viridi chalybeus, 

 nitidus, alarum fasciis duabus nigricantibus, antice conjuuctis et pos- 



tice abbreviatis. 



/ 



Abdomine fasciis latioribus nigris ornato, halteribus fuscis, coxis pedi- 

 busque nigris, tibiis anterioribus tarsorumque anticorum articulo primo 

 fiavis, tibiis posticis ex nigro fuscis. 



9 . Abdominis fasciis nigris angustissimis obsoletis, halteribus, coxis 

 anticis pedibusque flavis, genibus posticis, tibiarum posticarum dirnidio 

 apicali, tarsoruiu anteriorum articulis quatuor ultiniis, tarsis deuique 

 posticis totis ex nigro fuscis. 



Green or green-blue, shining ; the two blackish bands of the wings con- 

 nected in front, shortened behind. 



. Abdomen with broad black bands ; halteres brown, coxje and feet 

 black, the four anterior tibiae and the first joint of the two fore tarsi 

 yellow, the two hind tibise blackish-brown. 



9 The black bands of the abdomen very narrow and indistinct ; hal- 

 teres, fore coxae and feet yellow, the knees of the hind feet and the apical 

 half of the hind tibise, the four last joints of the four anterior tarsi, and 

 the whole posterior tarsi blackish-brown. Long. corp. 0.15 0.20. 

 Long. al. 0.180.20. 



SYN. Psilopus sipho MACQUART, Dipt. exot. II, 2, 119. Tab. XXI, Fig. 1. 

 Psilopus jucundus LOEW, Neue Beitr. VIII, 87, 5. 



Male. Bright green, the head, the hind part of the thorax, the 

 scutellum and the basis of the abdomen more steel-blue in the 

 described specimen. Palpi black. Proboscis yellowish-brown. 

 Face without hairs, moderately dusted with white. Bristles upon 

 the second joint of the antennae and the arista not very long, the 

 latter distinctly dorsal. Front with a scattered white pubescence. 

 Thorax with but moderately long, scutellum with longer black 

 bristles. Pleurae black with a green reflection and rather closely 

 dusted with white. Abdomen with black bands at the basis of 

 the single segments, which are broader on the hind segments than 

 upon the anterior ones. The scattered pubescence of the abdomen 



