280 ‘DIPTERA. 
front (scarcely one-half the breadth of the eyes) and also in the absence of hairs on the 
inner side of the hind tibie. On account of these important differences I should be 
inclined to consider this latter as belonging to a distinct species, if it were not that 
another specimen evidently showed a transition in both these characters, that is, in 
having the front narrower than in the type (but broader than in the first-mentioned 
example) and the hind tibie slightly hairy. For the rest, both these specimens agree 
in their general habitus, colour, and markings with the typical ones. It seems to be 
another example amongst the innumerable forms of the family Muscide in which the 
characters are transitional. | 
A female specimen from the same locality (Chilpancingo) seems to belong to this 
species. In its yellowish-cinereous coloration it agrees with the males, and likewise in 
some particular characters, viz. the rufous tips of the front femora and the row of 
marginal macrochete on the third abdominal segment. It is, however, considerably 
smaller (7-5 millim.). From the females of most of the other species it differs in 
having the abdomen not ovate, but of the same elliptical shape as in the male. The 
front is nearly twice as broad as the eyes; the anus yellowish red. 
22. Sarcophaga claripalpis, sp.n., ¢ 2. 
Cinereous ; frontal band, three thoracic stripes, reflecting spots on the abdomen, and legs black; antenne 
(at least the basal joints), palpi, and anal segment (also the hypopygium in 3) red; hind tibie fringed 
outwardly ; wings not bristly. 
Length 9°5 millim. 
Head pale yellowish-grey ; front rather prominent, longer than the face, on the vertex much narrower in the. 
¢ than the eyes, in the 2 as broad as the eyes; frontal band blackish ; oral margin slightly prominent ; 
inferior part of the cheeks equalling one-half of the longitudinal diameter of the eyes. Antenne inserted 
beneath the median line of the eyes, rufous; the third joint brownish, three times as long as the second ; 
arista plumose nearly to the end. Proboscis shining black; palpi rufous, slender, gradually thicker 
towards the end. Thorax and scutellum cinereous ; dorso-central bristles present ; thorax with three black 
stripes; scutellum obscure on the disc. Abdomen: ( ¢ ) ovate, yellowish-cinereous, the first three segments 
with a black dorsal line and two brown, broader, lateral bands, the anal segment reddish, with grey 
reflections, the hypopygium red and very small; (@) broader, the first three segments cincreous, with 
black reflecting spots, chiefly on the hind borders of the segments, sometimes with a black dorsal line 
becoming more conspicuous, the hind border of the third segment with a rufous tinge, the anal segment 
wholly of this colour; both sexes with marginal macrochete on the third and anal segments. Legs 
slender, black ; tibia with some scattered bristles, the hind pair fringed on the outer side with bristly 
hairs, which in the ¢ are a little longer than in the 9; foot-claws and pulvilli in both sexes short. 
Tegule whitish. Wings greyish-hyaline; no bristles on the veins; small cross-vein under the middle 
of the mediastinal cell and on the middle of the discal cell; curvature of the fourth vein rectangular and 
with a short prolongation ; apical cross-vein very slightly concave ; posterior cross-vein straight. 
Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith), Northern Yucatan 
(Gaumer). 
A male and four female specimens. This is the only Mexican species with rufous 
palpi, all the others having the palpi black. 
In S. rufipalpis, Macq. (Dipt. Exot. ii. 3, p. 102), from Brazil, with which I have 
identified a female specimen from the island of Curacao (‘Notes from the Leyden 
