PLATE 4. 
Fig. 1.— Parastacus araucanius Faxon. &@. Corral, Chile,‘ Dec. 18, 1908. Type. M. C. Z., No. 
7,355. i 
Fig. 2.— Epistoma of the same. 
Fig. 3.— Antennal scale from the right antenna, upper face. 
