224 SUPPLEMENT. 



A single male specimen. Whether the silvery markings on the abdomen are just as 

 they are described I cannot say, as this portion of the body is injured in the Mexican 

 insect. The mesonotum is velvety-black, with a silvery-pollinose spot on each side in 

 front, and sparse golden pubescence. 



CUI1CIDJ3 (p. 5). 

 MEGAKRHINA (p. 6). 



2. Megarrhina haemorrhoidalis. 



Culew htsmorrhoidalis (Fabr.), Wiedem. Aussereur. zweifl. Ins. i. p. 2 \ 

 Megarrhina h&morrhoidalis, O. Sack. Cat. Dipt. 1878, p. 18 2 . 



Hah. Mexico, Atoyac in Vera Cruz (H. H. Smith). — Guiana, Cayenne 1 ; Cuba 2 . 



Three males from Atoyac belong, in all probability, to this species, distinguishable 

 by the entirely black tarsi and the brilliant red hairs at the end of the abdomen. The 

 hairs are confined to the tip of the sixth and the sides of the seventh segments, and do 

 not occur on the fifth segment, as Wiedemann stated. The femora are, for the most 

 part, yellow. 



3. Megarrhina grandiosa, sp. n. 



2 . Antennse brown. Proboscis black. Palpi black, covered with black and violet tomentum. Pace 

 somewhat reddish. Occiput black above, and covered with green and yellow tomentum. Thorax deep 

 red, the ground-colour of the mesonotum mostly concealed beneath a metallic-green tomentum, that of 

 the pleurae more silvery or yellowish-white. Abdomen brown or yellowish-brown, the dorsum concealed 

 beneath green tomentum, like that of the mesonotum. Legs yellow ; dorsal surface of the femora 

 blackish, with green, and violet tomentum ; base and extreme tip of the hind tibiae brown, the remaining 

 portion with yellow hair ; dorsal surface of the front tibiae blackish, with violet tomentum ; front 

 metatarsi, except the tip, blackish, the remainder of the front tarsi light yellow ; hind tarsi blackish, the 

 tip of the third joint, and the fourth and fifth wholly, nearly white ; inner side of the hind metatarsi 

 yellow. Wings tinged with yellowish, the scales dark brown. Length 10 millim., inclusive of proboscis 

 18-20 millim. 



Hah. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 



One specimen. Distinguishable from M. rutila, Coq., by the colour of the legs. 



CHIRONOMID^I (p. 6). 

 CERATOPOGON. 



Ceratopogon, Meigen, in Illiger's Magaz. f. Ins. ii. p. 261 (1803). 



l. Ceratopogon pachymerus, sp. n. 



$ . Head reddish-yellow ; eyes not contiguous above. First two joints of the antennae red ; flagellum yellow 

 the distal joints somewhat infuscate. Thorax robust; mesonotum brownish-red, opaque, somewhat 



