LEUCOMELINA., 329 
fourth vein is a little beyond the middle and sometimes less evident. The arista is more distinctly 
short-haired. 
Hab. Mexico !, Presidio (Forrer), Patzcuaro (/. D. Godman), Orizaba (H. H. Smith 
and F. D. Godman), Mexico city, Tepetlapa, Chilpancingo, and Xucumanatlan in 
Guerrero, Atoyac and Medellin in Vera Cruz, Cuernavaca in Morelos, Frontera and 
Teapa in Tabasco (H. H. Smith). 
A large series of male specimens. 
3. Leucomelina seva. 
Anthomyia seva, Wiedem. Aussereur. zweifl. Ins. ii. p. 430°. 
Spilogaster seva, Schiner, Reise der Novara, Dipt. p. 300’. 
Limnophora elegans, Macq. Dipt. Exot. ii. 3, p. 165, t. 22. fig. 6°. 
Eyes contiguous (¢); thorax black, with a lateral band and a margin to the transverse suture white; anal 
segment with two blackish stripes. 
Length 4°5—6 millim. 
In the contiguous eyes (¢) this species agrees with both the preceding, and in the white-margined trans- 
verse suture with Z. corvina. On the prothorax, however, the longitudinal white stripes are absent, 
though some traces of them are recognizable in a small projection at the interrupted end of the sutural 
stripe. ‘The abdomen resembles that of the preceding species in shape, coloration, markings, and pilosity ; 
on the anal segment, however, there are two blackish spots, similar to those on the other segments, but 
somewhat smaller and more in the form of a pair of stripes, between which the dorsal line is prolonged. 
The arista is short-plumose at its slightly enlarged base, and for the rest a little pubescent. The wings 
are brownish, especially in the mediastinal cell and along the outer portion of the costa; the neuration is 
exactly like that of L. pica. 
Hab. Mexico, Omilteme in Guerrero, Teapa in Tabasco (H. H. Smith).—Soutu 
Amenrica2, Guiana ?, Brazil 1. 
Three male specimens. 
Wiedemann’s description of Anthomyia seva, as amended by Schiner, who has 
examined the typical specimens, perfectly agrees with the Mexican specimens before 
me. Macquart’s description and figure of Limnophora elegans seem also to be fully 
applicable to this species. 
Two females from Caché and Rio Sucio, Costa Rica (Hogers), probably belong here, 
as they show the two blackish stripes on the anal segment, and are without white 
longitudinal stripes on the disc of the prothorax. 
4, Leucomelina deleta, sp. n., ¢. 
Eyes contiguous (¢); thorax black, with a white lateral band; no white margin to the transverse suture, nor 
white stripes on the prothorax; anal segment with two black stripes. 
Length 5°5 millim. 
Differs from the preceding species (Z. seva) in the less extended white markings on the thorax; the lateral 
bands are narrower; the white margin at the transverse suture is absent ; and the whole thoracic dorsum 
is black, except for two whitish spots at the posterior angles. The abdomen has the black markings more 
extended, and it could be described as black, with cinereous, triangular, lateral spots and a cineréous 
BIOL. CENTR.-AMER., Dipt., Vol. II., December 1896. 2 u 
