LIMNOPHILIDE. 
are bounded on each side in front by an oblique line of black mus- 
cle-attachment marks ; between the oblique line of black attachment 
marks and the mouth parts there is shading of black and brown. 
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PYCNOPSYCHE SCABRIPENNIS. 
88. Larva. Head and thorax. 92. Case. 
89. Case. Cross section. 93. Case. 
go. Larva. Distribution of gills. 94. Case. 
gi. Larva. Frons. gs.. Case. 
61 
