114 DIPTERA. 
Hab. Mexico, Venta de Zopilote in Guerrero 2800 feet, Atoyac in Vera Cruz, Teapa 
in Tabasco (H. H. Smith). 
Several female specimens. 
21. Masicera calcarata, sp. n., °. 
Cinereous ; face silvery-white; frontal band, four thoracic stripes, reflecting spots on the abdomen, antenne, 
and legs black; palpi and terminal lips of the proboscis rufous; hind tibie with some long and stout 
bristles. , 
Length 9 millim. 
Allied to M. sordida. The face more retracted, the front somewhat broader and with a yellowish or ochra~- 
ceous tint ; the antennz much longer, and nearly reaching the oral margin, their third joint six times as 
long as the second; the stripes of the thorax not united behind the transverse suture; the abdomen more 
conical, and cinereous with blackish reflections; the hind tibize outwardly with some long and robust 
bristles. 
Hab. Muxico, Cuernavaca (Hl. H. Smith). 
A single female specimen. 
The following species, all from Mexico, are included by their authors in the genus 
Masicera or Ceromasia :— 
Masicera disputans, Walker, Trans. Ent, Soc. Lond. new. ser. v. p. 302. 
gentica, Walker, 1. c. p. 302. 
necopina, Walker, 1. c. p. 303. 
—— expergita, Walker, l. c. p. 304. 
Jlavifacies, Bigot, Ann. Soc. Ent. Fr. 1888, p. 263. no. 51. 
Ceromasia quadrivittata, Bigot, 1. c. p. 261. no. 39. 
zonata, Bigot, |. c. no. 40. 
pictigaster, Bigot, 1. c. no. 41. 
castanifrons, Bigot, l. c. no. 42. 
— chrysocephala, Bigot, 1. c. no. 43. 
spinipes, Bigot, l. c. p. 262. no. 44. 
abbreviata, Bigot, 1. c. no. 45. 
Without an examination of the types it is impossible to say whether these species 
are different or not from those described here; the descriptions or diagnoses of both 
authors are too incomplete for the purposes of identification. 
METOPIA. 
Metopia, Meigen, in Illiger’s Magaz. ii. p. 280 (1803). 
This genus may easily be recognized by the prominent conical front, the very long 
antenne, the bristles on the facial ridges, and the prolongation of the fourth vein at its 
point of curvation. 7 
One species from Central America must be included in it. 
