166 
Fannia caniciilaris etc. 
which commences on segment III and is continued posteriorly. These 
flagelliform processes are spiniferous, the spines being well developed 
at the basis of the processes and gradually decreasing in size distally. 
The twelfth or anal segment is provided with three pairs of these 
processes of unequal size; the most anterior pair is the longest on the 
body and the intermediate pair is shorter. 
There is a series of pairs of small, almost sessile branched appendages 
(Fig. 5) situated near and slightly posterior to the bases of the latero- 
dorsal appendages. These were described by Kieffer. Each of these 
processes has three to four branches and they carry a small nucleiform 
organ which Chevril (1909) has also de.scribed. He believes that this 
organ is of the nature of an exuvial gland and correspondent to Verson’s 
gland. 
Fig. 3. Median joints of middle pair of legs (right), posterior aspect. 
a. Fannia scalaris. b. Fannia caniciilaris. 
On the ventral surface of the body and extending posteriorly from 
segment III there is to be found a series of pairs of small spiniferous 
papillae. Between these there is on each segment a transverse row of 
four groups of spines. 
The anterior, or prothoracic spiracular processes (Fig. 4 a.sp.) have 
usually seven finger-like lobes, though the number may vary from five 
to eight, and between the second and third lobes there appears to be 
a small stigmatic organ. The posterior spiracular processes have a 
trilobed appearance, but a close examination reveals their four-1 obed 
character shown in Fig. 6; a stigmatic orifice is situated at the 
extremity of each lobe. 
The spiny character of the flagelliform appendages and body of 
the larva causes particles of dirt to adhere readily to the bodies and 
