261 
of the ‘Great Lake’ recently discovered by my friends, Messrs. Living- 
ston, Oswell and Murray. 
“Yours faithfully, 
“FRANK VARDON.” 
“* J. O. Westwood, Esq.” 
The various specimens forwarded to me by Captain Vardon have 
enabled me to determine that the insect is a new species of Wiede- 
mann’s genus Glossina, which may be thus characterized :— 
Guiossina MorsITANS, Westw. (Pl. XIX. fig. 1. and details.) 
Luteo-albida, thoracis dorso subcastaneo, griseo subtomentoso, vit- 
tis quatuor longitudinalibus in medio interruptis nigris, scutelli 
apice punctis duobus parvis fuscis ; abdomine pallide lutescenti, 
segmento basali utrinque macula parva laterali nigra, singulo 
segmentorum quatuor proximorum ad basin fascia nigricanti, in 
medio interrupta, notatis ; alis parum infumatis. 
Long. corp. lin. 5; expans. alar. lin. 8}. 
The head is of a dirty buff colour, narrower than the thorax, with 
large eyes; the epistoma is paler coloured and clothed with whitish 
hairs; the proboscis is rather longer than the height of the head ; 
it consists of a slender, horny seta or compound bristle, chestnut- 
coloured in its chief length, but dilated at the base into a large oval 
bulbous horny lobe, and upon maceration I was enabled to withdraw 
from the upper side of the seta (which is consequently grooved), two 
. very delicate styles as long as the proboscis ; the sides of this instru- 
ment are defended by a pair of elongated, slender setose palpi, as long 
as the proboscis itself; these are concave on the inside and blackish 
at the tips, and the setee with which they are clothed are also black, 
as well as the branched setze with which the arista of the antennz is 
furnished ; the outer surface of the arista itself, under a powerful 
microscope, is evidently villose. The antennz are inserted in a de- 
pressed obconic space between the eyes, rounded above, and there 
are two dark spots on the upper part of the epistoma; the two basal 
joints of the antennee are dark in front, and the large third joint is 
dirty buff-coloured. The thorax is chestnut-red, clothed with a very 
delicate grey tomentosity and finely punctured ; it is impressed across 
the middle of the dorsum, and is marked with four longitudinal broad 
black bars, abbreviated in front and behind, the two central ones being 
longest in front, and the two lateral ones longest behind; the two 
former are united in front by a black streak from the front margin. 
The scutellum is dirty buff, with two dark dots at its extremity, from 
which, as well as from various dark dots at the sides, arise long black 
setee ; the halteres are nearly white. The wings are slightly stained 
with dusky ; the veins black, except at the base of the wing, where 
they are dirty-buff. The legs are dirty-buff, with the outside of the 
thighs stained with dark brown. The last two joints of the tarsi are 
black, with large pulvilli. The abdomen is flat, oval in outline, and 
dirty fulvous buff in colour, clothed above with numerous minute 
