each side and behind and adorned with a 
ferruginous stripe: abdomen dull, its tip 
beset with a few stout black bristles: legs 
dark tawny, clothed with short black hairs 
and bristles: claws black: wings brown: 
wing-ribs and fore border veins pitchy; the 
other veins dark tawny. Length of the body 
3 lines; of wings 1 lines. 
a. Galapagos. Presented by C. Darwin, 
Esq. 
Ornithomyiu unicolor, n. s. 
Nigro-picea, pedibus piceis, alis fuscis. 
Body, including the mouth and the ap- 
pendages, pitchy-black: head and chest shi- 
ning: head smooth: eyes pitchy: the facets 
rather large: chest finely punctured: abdo- 
men dull: legs pitchy, clothed with short black 
hairs and bristles: claws black: wings brown: 
wing-ribs and fore border veins pitchy; the 
other veins dark tawny. Length of tne body 
3 12 lines; of the wings 9 lines. 
a. On Ephialtes grammicus. b. On Fre- 
gata aquilus. Jamaica. From Mr. Gosses col- 
lection. 
Ornithomyia vicina, n. s. 
Picea, capite humeris abdominis basi et 
segmentorum marginibus posticis apice fulvis, 
pedibus fulvis, femoribus basi coxisque pal- 
lidioribus, tarsis piceis, alis subfulvis. 
Body pitchy, smooth, shining: head, 
shoulders and base of the abdomen dark 
tawny: tip of the abdomen beset with black 
bristles: hind borders of its latter segments 
pale: legs tawny, clothed with black hairs: 
thighs at the base and hips pale tawny: feet 
pitchy: claws black: wings pale brown; veins 
pitchy; fore border veins at intervals, and 
wing-ribs pale tawny: second longitudinal 
vein united to the costal vein long before 
the end of the latter. Length of the body 1 
line; of the wings 4 lines. 
a. Jamaica. On Ephialtes grammicus. From 
Mr. Gosses collection. 
+ 
and appendages tawny: chest ferruginous on | 
Ornithomyia fulvifrons, n. s. 
Picea, capite antice fulvo, thoracis spinis 
apice flavis, pedibus fusco-fulvis, tarsis piceis, 
alis limpidis. 
Body pitchy, smcoth, shining: fore part 
of the head, mouth and all the appendages 
bright tawny, beset with tawny bristles; 
crown dull in the middle, where one longi- 
tudinal and two diagonal furrows meet: a 
large spine, pale yellow towards the tip, 
projecting on each side of the fore border of 
the chest, whose two furrows are obsolete 
at the point of intersection: hind border of 
the scutcheon armed with a row of short 
black bristles: abdomen dull, clothed with 
short black hairs: legs brownish tawny, beset 
with black bristles: feet pitchy: knees and 
claws black; foot-cushions yellow: wings co- 
lourless; wing-ribs and veins pitchy; fore 
border veins black. Length of the body 2 lines: 
of the wings 6 lines. a. Jamaica. On Ortyx 
virginiana. From Mr. Gosses collection. »— 
Rondani, Camillo: Muscaria exotica 
Musei Civici} Januensis Fragmentum IV. 
(Hippob.). 29-30 Marzo 1878: 
«Gen. Olfersia WDM. 
O. Macquartii mihi. — Long. mill. 5.—fusca _ 
Macq. (olim in scheda]. 
Nigricante-picea: proboscide lutescente, 
basi crassiuscula et in linguam filiformem 
elongata. — Palpi elongati, sub-erecti, nigrican- 
tes, sub-conici. —Frons non distincte foveola- 
ta, nec punctis impressis signata, labio supra 
os sub-lutescente: orbitis angustis et areola 
verticis levibus nitentibus; area verticale anti- 
ce in medio incisa, et in specimine nostro paulo 
ferruginante. — Thorax in dorso cum scutello 
nitens. - Abdomen nigricans, opacum, nigro- 
setigerum, laterious et basi pallidis. — Alae 
fuscae, venis obscure sub-luteis, abdomine 
duplo et ulira longiores: vena prima longi- 
tudinale contra transversam interiorem de- 
sinente; secunda costalem attingente sic lunge 
a transversa exteriore circiter ut ab interiore: 
tertia in costale satis remota a secunda et pro- 
xima quartae: transversa interiore dimidiata 
non obliqua.—Pedes fusci, femoribus basi 
