LIMNOPHILIDE. 
drawing. The mandibles are black, with a line of dense yellow 
hair on the top edge of the groove: 
Thorax.—The prothorax is light-brown with a slightly oblique 
black mark on each side above the coxa; the top surface has, in 
Sn nn Gann ed Gans Gn | 
CHILOSTIGMA DIFFICILIS. 
106. Larva. Head and thorax. 111. Larva. Frons, 
107. Larva. Distribution of gills. 112. Larva. Front leg. 
108. Pupa. Mandible. 113. Case. 
109. Larva. Lower mouthparts. 114. Pupa. Chitinous plates of left 
110. Larva. Labrum. side of abdomen. 
addition to numerous sete of the ordinary type, many shorter, 
spear-shaped, forward-pointing spines, not shown in the accom- 
panying figure; these are most numerous along the front margin, 
where they project over the base of the head; the dorsal markings 
of the meso- and meta-thorax are shown in figure 106. The legs 
are light-brown, margined and marked with black. Figure 112 
shows a front leg. 
The Abdomen.—The lateral fringe is short and weakly devel- 
71 
