TETANOCERA.—SEPEDON. 309 
5. Tetanocera plumifera, sp. n., 3. 
Testaceous; front, antenn, and legs rufous; arista densely plumose; wings cinereous; costa and cross-Vvelns 
bordered with brown; posterior cross-vein undulate. 
Length 5°25 millim. 
Closely allied to the preceding species (7. spreta), and agreeing with it in most respects. The median stripe 
on the front is more shining; the plumosity of the arista is shorter, but more dense; the colour of the 
body is generally clearer, and the stripes on the thorax are less distinct. The wings have a brown border 
along the costa, from the mediastinal cell to a little beyond the end of the second vein ; the posterior 
eross-vein is only slightly undulate. 
Hab. Mexico, Ciudad in Durango 8100 feet (Forrer). 
A single male specimen. 
SEPEDON. 
Sepedon, Latreille, Hist. nat. des Ins. xiv. p. 305 (1804). 
Our Mexican collections include three species of this genus, all of which are described 
as new :— 
1. Second joint of the antenne as broad as the third. . . . . . . . . « ~~ relictus. 
Second antennal joint narrower and much longer than the third . . . . . . 2. 
2. Hind femora with a black ring before the tip; wings without markings. . . . migriventris. 
Hind femora without black ring; wings clouded towards the tip . . . . . . nubilipennis. 
1. Sepedon relictus, sp. n.,¢. 
Testaceous ; second joint of the antenne as long and nearly as broad as the third. 
Length 5 millim. 
Front rufous, as broad as the eyes, in the middle deeply excavated; face pale yellow, shining, and with white 
reflections; a black dot on each side next the orbits, beneath the antenne. Antenne as long as the 
head, rufous, at the base separated by a small protuberance of the front; first joint short; second joint 
elongate and rather broad, with black hairs on the upper and under sides; third joint as long as the 
second, lanceolate, blackish at the tip; arista bare, whitish, the base slightly thicker and rufous. 
Proboscis and palpi rufous. Thorax, scutellum, and abdomen reddish-testaceous; thoracic dorsum with 
six brown lines, laterally with a brown stripe extending from the shoulders to the base of the wings ; 
pleurz cinereous, with small brown spots; abdomen flattened, with a brown dorsal band. Legs rufous, 
coxse cinereous ; tibise with a black tip, which is less conspicuous on the middle pair; hind tibie also 
with a blackish median ring; hind femora robust, longer than the abdomen, and with a row of short 
black spines beneath ; hind tibia slightly arcuated. MHalteres rufous. Wings brownish-yellow, near the 
tip with some oblong clouds between the veins; cross-veins infuscated; small cross-vein on the middle 
of the discal cell ; posterior cross-vein curved. 
Hab. Mexico, Mexico city (7. H. Smith). | 
A single male specimen. 
2. Sepedon nigriventris, sp. n.,¢. 
Thorax cinereous; abdomen black; head and legs rufous; hind femora with a black ring; second antennal 
joint narrower and much longer than the third. 
~ Length 5°5 millim. 
Head shining, rufous; front in the middle deeply excavated ; two black dots beneath the antenne, at some 
distance from the orbits; oral margin sharply projecting ; occiput swollen. Antenne longer than the 
