FAMILY MIDASID2. 53 
Species XXIV.—M. pachygaster, Westw. n. sp. (pl. 13, fig. 4.) Rubiginosus, antennarum 
articulo 3tio fulvo, 4to nigricanti, oculis nigris intus sericie albicanti marginatis ; 
thoracis dorso nigro vittato, abdomine thorace latiori, segmento 1mo et ultimo fulvescen- 
tibus, Imo basi obscuro, intermediis nigris margine tenui postico flavo, pedibus rubigi- 
nosis ; alis fuscantibus ad costam melleo tinctis venis obscurius marginatis. Q Long. 
corp. lin. 93. Expans. alar. lin. 20. 
Habitat in Georgia Americana. In Mus. D. Hope. 
Specirs XXV.—M, basalis, Westw. un. sp. Niger, facie fulva, antennis nigris, articulis duobus 
basalibus fulvis, thoracis dorso obscure ferruginoso vitta media nigra, abdomine crasso seg = 
mentis 2—7 flavo marginatis, pedibus fulvis, coxis femoribusque 4 anticis basi nigris, alis 
flavido-fuscanis, venis fulvis. 9. Long. corp. lin. 11. Expans, alar. lin. 20. 
Habitat in Mexico. Tacubaya. D. Coffin. Mus: nostr, 
Obs.—The middle cell near the hind margin of the wing does not 
emit the short transverse vein running to the margin. 
Specirs XXVI.—M. maculiventris, Westw. (in Lond. and Edinb. Phil. Mag. June 1835, 
Pl. 13, fig. 5). Obscure niger ; abdomine testaceo fuscanti ; segmentis apice pallidis et 
(nisi segmentis duobus basalibus) macula triangulari nigra in medio notatis, his maculis 
versus apicem abdominis magnitudine crescentibus, segmento anali fusco ; abdomine toto 
subtus concolori ; alis flavido-fuscantibus, venis in parte postica obscurius marginatis ; 
epistomate nigro hirto, pedibus piceo-nigris. 
Long. corp. lin. 11. Expans. alar. lin. 19. Habitat in Georgia Americana. Mus. Hope 
et nostr. 
Obs.— Abbot's drawings of Diptera, No. 66, represents a probable 
variety of this species, in which the second segment of the abdomen 
has the sides and hind margin (except in the centre, where the 
band is interrupted) fulvous-coloured ; the third segment has also 
a subapical fascia interrupted in the middle of the same colour. 
Species XXVII.—M. incisus, Macquart (Dipt. Exot. Nouv. v.1, pt. ii. p. 1J, pl. 1, fig. 1). 
Niger, abdomine incisuris flavis, segmento basali omnino nigro, alis fuscis, cellulis 4 pos- 
ticis. Long. corp. lin. 9. 
Habitat Carolina. 
Species XXVUL—WM. parvulus, Westw. n. sp. (Pl. 13, fig. 6). Obscure fulvus, antennis 
nigricantibus, basi subluteis, oculis nigris intus sericie alba marginatis, thorace vittis 
4 nigricantibus, 2bus lateralibus antice, intermediis 2 postice, abbreviatis ; abdomine flavo, 
nitido punctato, segmentis 2do et sequentibus nigro fasciatis, fasciis in segmentis posticis 
multo latioribus, pedibus fulvis, alis fuscanis costa magis lutescenti. Long. corp. lin. 63. 
Expans. alar. lin. 11. 
Habitat in America Septentr. D. Doubleday. Mus. Newman. 
Species XXIX.—M. apicalis, Wied. (Mon. Mid. pl. 53, fig. 14.) Niger, abdomine chaly- 
beo, medio niyro, antennis apice rubris, alis sinuato nigris, margine interno flavido ¢. 
Long. corp. lin. 9. 
Habitat in Brasilia. 
Species XXX.—M. virgatus, Wied. (Mon. Mid. pl. 54, fig. 19.) Niger, thorace vittis 
albo micantibus, alis infumatis. Long. lin. 73. 
Habitat in Brasilia. 
Species XXXI.—M. stenogaster, Westw. n. sp. (Pl. 14, fig. 3). Niger, albido setosus, 
facie barba densa albida obsita, thorace maculis duabus parvis in margine antico albo 
squamosis, alterisque duabus versus basin alarum, abdomine valde elongato, segmento 
antico albo-piloso, 2do nigro, 3tio obscure rufo, lateribus nigris albo maculatis ; ceteris 
sanguineis, singulo ad basin utrinque macula parva alba; pedibus piceo sanguineis ; alis 
subhyalinis. Long. corp. lin. 9. Expans. alar. lin. 13. 
Habitat Swan River, Australasia. Mus. Hope. 
Obs.—The veins of the wings of this species agree with those of 
M. viduatus. 
Species XXXII.—WM. bicolor, Westw. n. sp. (Pl. 14, fig. 2). Niger, albo-pilosus, facie barba 
densa albida, abdomine segmentis 5 posticis, pedibusque sanguineo-rufis, tarsis paullo 
obscurioribus, alis hyalinis, venis flavido-fuscanti marginatis. Long. corp. lin. 93. 
Expans. alar. lin. 16. 
Habitat in Australasia Occidentali. Mus. Hope. 
