8 <) 
Segmentation very pronounced and regular above but convoluted 
ventrally; all the segments, with the exception of the antepenulti 
mate which carries the anterior stigmata, almost covered with ven 
short and rather blunt spines, the majority of which have dark brown 
or piceous tips; these spines are arranged in short straight transverse 
lines, each group consisting usually of from three to five spines, in 
some cases there are but two and in others more than five. The great 
mouth hooks are black; and there is a lateral palmate group of 
external teeth as in the larva of Auchmeromyia luieola (q.v.) 
Posterior stigmata on the last segment, subdorsally placed, and very 
close together. 
Further details cannot be given, as it has been thought well to 
preserve the specimen intact. 
Larvae of a Muscid Fly in a Mule 
The mule illustrated in fig. 16 was brought to us at Kasongo. In 
the centre of a large and very conspicuous oedematous swelling on its 
abdomen was a deep-seated ulcer, some three inches in diameter. On 
inspection, the whole ulcer, below the level of the epidermis, was found 
to be so closely set with the larvae, described below, that it was 
impossible to see any part of its base. 
The mouth parts of the larva were invariably directed inwards and 
the bodies of the parasites were so deeply buried in the tissues of the 
host that their posterior extremities were alone visible. It was found 
that there were two layers, one above the other, of larvae, packed side 
by side closely together. It seems probable that they were able to 
burrow in the tissues of their host, since a few larvae were found in 
the sloughing tissues at a depth of some five centimetres from the 
apparent surface of the ulcer. None of the larvae penetrated into the 
abdominal muscles. About 160 to 180 larvae were taken from this 
lesion, which healed quickly after a thorough curetting and dressing 
with iodoform. A description of the larva is herewith appended : 
Length n mm.; greatest width 2*25 mm. 
Colour, in formol, dull pink, with the anterior segments paler; some 
examples were almost white. Form spindle-shaped, tapering from 
the mid region almost to a point in front, and slightly so posteriorly 
Great mouth hooks prominent, unidentate, and black. Segmentation 
very pronounced, each with a strongly marked ridge forming 
