LIMNOPHILID&. 
with a dusky border along the cephalic margin and dark mottling 
on the caudal half; on the under side there is a chitinous plate of 
dark-brown color in front of the caudal margin of the segment. 
NEOPHYLAX CONCINNUS. 
115. Larva. Head and thorax. 119. Respiratory openings of pupal 
116. Larva. Frons. case. 
117. Larva. Labrum. 120. Pupal case. 
118. Larva. Distribution of gills. 
On the mesothorax the chitinous plates above the articulation 
of the coxe extend up to the lateral margins of the dorsal shield, 
with which they are narrowly united; on the under side of the 
segment there is a pair of chitinous plates in front of the caudal 
margin; the dorsal plates, figure 115, have a varying pattern of 
dark-brown on a lighter field. 
Abdomen.—On the first segment the dorsal hump is repre- 
sented by an elongate chitinous plate; the lateral humps are prom- 
inent and of darker color than the surrounding cuticle; on the 
dorsal surface there is a line of sparse sete passing in front of 
the dorsal hump and ending well above the middle of the lateral 
humps; on the ventral surface there is an elevation which bears 
a pair of small chitinous spots, each with a single seta; midway 
between this elevation and each lateral hump there is a thumb-like 
structure of doubtful function. On the ventral surface of seg- 
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