TWO CASES OF INTESTINAL MYIASIS 
I 2 I 
hairs a short appendage, consisting of three or four spiny processes on a short stalk 
(Fig, 2). They are situate just on the inner side of the lateral processes. The larva 
consists of eleven segments ; the surface of the segments are pitted all over with 
small, almost spherical, markings giving a honey-combed appearance to the surface 
(Fig. 4). The size of these pits is very uniform, but here and there pits of a larger 
size occur. 
On the anterior segment they are so arranged as to give a longitudinal and 
transverse pattern. 
On the inside of the anterior segment these are well seen as elongated irregular 
lozenge spaces. Beside the appendages and the markings of the surface, we may 
consider more particularly the ' lateral processes ' of the anterior segment and the 
structures on the posterior segment. The ' lateral process ' consists of eight radiating 
tentacle-like structures slightly expanded at the tips (Fig. 3). They appear to arise 
directly from the side of the segment, and do not show any visible stalk as in the 
previous larva. Eight can, in favourable conditions, be definitely distinguished. 
Posteriorly, on the dorsal surface, we have the respiratory syphons (Fig. 4), and 
ventrally the anus, situated on a somewhat raised shield-like structure, with its broad 
end posteriorly (Fig. 5). 
The posterior segment is taken to include the area from which six well-marked 
spinous appendages arise. 
The syphons arise from slightly behind the middle of the last segment. They 
are situated on a well-marked stalk with a broad base narrowing to the apex, where 
it expands into three unequal processes, two equal, and one shorter (Fig. 4). 
The honeycombed pattern of the integument can be traced some way up the 
stalk. 
On this segment are some well-marked pits, seven to eight times as large as the 
general pitting. 
The main characteristics of the larva of Homalomyia cankularis are then : — 
1. The pitted surface. 
2. The spinous dorsal ventral hairs and the accessory hairs. 
3. The lateral processes of eight segments on the anterior segment. 
4. The posterior stalked syphons. 
5. The anal markings. 
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