LIMNOPHILIDZ. 
parts of this larva is caused by a coating which can, with difficulty, 
be removed, leaving the skin white and revealing a sparse armature 
of very minute spines. The distribution of this rust-like coating 
Zar e 
LIMNOPHILUS INDIVISUS. 
59. Larva. Head and thorax. 63. Larva. Labrum. 
60. Larva. Distribution of gills. 64. Pupa. Caudal appendage. 
61. Sievenet. Front end of pupal 65. Larva. Frons. 
case. 66. Pupa. Chitinous plates of left 
62. Sieve net. Caudal end of pupal side of abdomen. 
case. 
is nearly uniform in different individuals and seems to be a secre- 
tion from the skin. 
Head.—Marked above as in figure 59; the sides are light-brown 
without sharply defined marks, but, on caudal portion, bearing 
many small, inconspicuous muscle-attachment spots; the ventral 
side is uniformly light-brown, except the extreme caudal portion, 
which is crossed by the area of dark spots extending downward 
from the sides; the antennez are jet black, except an area at the 
base, which is brown; the labrum (figure 63), is light-brown bor- 
dered with dark-brown ; the mandibles are jet black, truncate, with 
fine teeth and a rather sparse brush of light-colored hairs on the 
edge of the groove; of these hairs the most cephalic are shorter 
and thicker. 
4 49 
