232 DIPTEEA. 



short, yellowish hairs (visible under the microscope only); forceps of the male brown, 

 beset with yellowish hairs; in some female specimens the last two segments are also 

 infuscate. Halteres reddish-yellow, the knob remarkably large. Legs: prevailing 

 colour reddish-yellow, with yellowish hairs and spines; the four anterior femora 

 brown on their proximal half, the brown often occupying two thirds of the femur ; the 

 hind femora sometimes brownish on the upperside ; the tibiae brown at the tip, as 

 well as the single joints of the tarsi (the tarsi in some specimens, and especially the 

 hind pair, might as well be described as brown, with the bases of the joints yellow). 

 Wings uniformly infuscated, including the anal cell and alula; the inside of some of 

 the cells paler (this varies in different specimens). I have before me one male and nine 

 females from the above-mentioned locality. 



Section II. LAPHRINA. 



DOEYCLUS. 



Doryclus, Jaennicke, Abh. Senkenb. Ges. vi. p. 365 (1867) ; Neue exot. Dipt. p. 58, t. 2. f. 3 (1867). 

 Megapoda, Macquart, Hist. nat. des Ins. Dipt. i. p. 288 (1834) (nomen prseocc). 

 Ampyw, Walker, List &c. vii. p. 564 (1855) (nomen prseocc.). 



1. Doryclus varipennis. 



Ampyw varipennis, Walker, List &c. vii. p. 564 \ 



(?) Megapoda cyaneiventris, Macq. Dipt. Exot. Suppl. i. p. 71, t. 7. f. 12 (1846). 



Sab. Guatemala, El Eeposo (Champion).— Amazons, Santarem 1 . 



A single female from Guatemala is identical with the Amazonian specimens of Ampyx 

 varipennis in the British Museum. The extent of the black on the legs, as well as the 

 intensity of the brown on the wings, varies in different specimens. Walker's description 

 being short, I supplement it from the specimen before me. 



Face brownish-red ; palpi reddish ; front and vertex dark reddish-brown, shining ; 

 antennse (broken ; red in the Brit. Mus. specimen) ; occiput reddish-brown ; occipital 

 orbits silvery. Thorax : dorsum black, with a slight bluish opalescent reflection, and 

 with three stripes of greyish pollen — the intermediate one elongate- cuneiform and 

 longitudinally bisected by a black line, the lateral ones nearly reaching the scutellum ; 

 pleurse reddish-brown, mixed with dark brown, shining, which colour encroaches upon 

 the mesonotum on its sides and in front. Abdomen metallic blue, with short, sparse, 

 whitish hairs ; ovipositor black. Legs brownish-red, but with the tarsi, the anterior 

 tibia? entirely, and the four hinder tibia? at the tips, black. Wings with two pale 

 brownish cross-bands, which leave but little subhyaline on the distal half, though, in 

 addition to the ill-defined interval between these bands, there are subhyaline spaces 

 between the second submarginal and the third and fifth posterior cells. 



N.B.— Schiner, Reise d. Novara, Zool. ii. Abth. i. 1, p. 156, recognized the identity 



