318 SUPPLEMENT. 



elongate, narrowed beyond the base ; shining metallic-green and blue, but the colour modified, as on the 

 mesonotum; first and second segments covered with close-lying yellow pile, a small patch of which is 

 also visible on the hind angles of the third segment. Legs deep resplendent blue, the tarsi deep black ; 

 hind femora much thickened ; inner side of the front and middle tibiae and the underside of the femora 

 with long and abundant bushy black hair ; front coxae and the underside of the middle tibise with similar 

 hair, but white in colour ; hind tibiae on the inner side with abundant, but shorter, black hair. Wings 

 deep brown, uniform in colour. Length 19-20 millim. 



Hob. Mexico, Atoyac in Vera Cruz {Schumann). 



One specimen. The long bushy pile of the legs is probably a sexual character. 

 Is this a Maira X 



4. Laphria marginalis, s P . n. 



$ . Black ; the sides of the third, fourth, and fifth, and the whole of the sixth and remaining segments red. 

 Front and face thinly greyish-pollinose ; facial gibbosity small, with sparse black bristles ; sides of the 

 face with a tuft of white hair. Antennae black ; third joint a little widened distally, about one and a 

 half times the length of the first two joints together. Beard white. Mesonotum shining blue-black, 

 clothed thinly with short, yellow, sparse, more erect, black hair. Pleurae grey-pollinose. Abdomen 

 black, with blue reflections ; the sides and tip red, as described above. Legs thinly white-pilose ; hind 

 femora moderately thickened distally. Wings brownish, more hyaline toward the base and in the 

 interior of the outer cells ; first posterior cell slightly coarctate. Length 10 millim. 



Hab. Mexico, Atoyac in Vera Cruz (Schumann). 

 One specimen. 



LAMPRIA (p. 186). 



Lampria aurifex (p. 187). 



To the localities given, add:— Mexico, Atoyac in Vera Cruz (Schumann), Teapa in 

 Tabasco (H. H. Smith). 



NUSA. 

 Nusa, Walker, Ins. Saund., Dipt. p. 108 (1853). 

 Andrenosoma, Bondani, Dipt. Ital., Prodr. i. p. 160 (1856). 



l. Nusa rubida, sp. n. 



6 2 ■ Front and face thickly yellowish-white-pollinose, with white hair, and on the moderately prominent, 

 shining black, facial gibbosity with long black bristles. Antennas black ; third joint red, a little longer 

 than the first two joints together, slender on the proximal portion, dilated distally. Beard abundant, 

 white. Thorax lilac-red, covered with white pollen, leaving bare on the mesonotum a broad, geminate, 

 median stripe, and two large, partially confluent spots on each side. Scutellum shining red on its 

 margin, and with black bristles; mesonotum with sparse, short, black and white bristles, and without 

 pile. Abdomen dark red, shining, the terminal segments and the hypopygium of the male lighter- 

 coloured, the sides with white hair, the dorsum covered with short black hairs ; near the middle of the 

 lateral margin of each segment with a black bristle, the first segment with two. Legs black, the tibiae 

 for the most part dark red ; hair of the femora and tibia? long, rather abundant, white ; hind femora only 



