216 IKSECTA SAUNDF.]^>STANA. 



Fam. MEGACEPHALT, Meigen. 

 Genus PIPUNCULUS, Latr. 



PlPUNCULUS LATERALIS, MaS. 



Niger^ eanescens, abdominis lateribus cano maculatis, anlemiis pedibuaque 

 fulvis, femoribus serratis, alis limpidis. 

 Nearly allied toP.^ai;i;>es. Black, shining: head and breast adorned 

 with hoary bloom : feelers taivny : abdomen hoary at the base and with a 

 row of irregular hoary spots along each side ; tip tawny : legs tawny ; thighs 

 serrated beneath for half the length from the tips, the teeth black and very 

 small ; tips of the feet pitchy ; tips of the claws black : ivings colourless ; 

 wing-ribs tawny ; veins black, tawny at the base ; poisers lawny. Length 

 of the body 2 lines ; of the wings 5 lines. 



North America. 



Fani. SYRPHICI, Lair. 

 Genus MICRODON, Illiger. 



MicRODON Teochilus, Fcm. 



Cyaneo-viride, purpurea aureoqtie varium, ahdomine cupreo, ventris apice 

 fulvo, antennis nigris, pedibus purpxtreo-cyaneis, alis suhcinereis ad 

 costam subfuscis. 



Bright bluish green : head clothed above with' black hairs and move 

 thickly in front with pale yellow hairs : eyes red ; all the facets very small : 

 mouth pitchy ; feelers black ; bristle pitchy : chest and abdomen clothed 

 with pale yellow hairs : a purple spot at the base of each iving ; scutcheon 

 and hind-chest tinged with purple : disk of the chest golden green : abdo- 

 men bright coppery, golden towards the base which is bluish green ; under- 

 side towards the tip tatvny which hue is divided from the green by a ferru- 

 ginous segment tinged ivilh purple : legs purplish blue, thickly clothed with 

 short black hairs ; shanks and feet tawny towards the tips beneath; claws 

 and foot-cushions bright tawny ; tips of the claws black : wings slightly 

 gray, pale brown along the fore border ; wing-ribs, veins, and poisers pitchy. 

 Length of the body 5^ lines ; of the wings 1 1 lines. 



Mexico. 



