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CALIFORNIA ACADEMY OF SCIENCES. [PROC. 3D Ser. 



EXPLANATION OF PLATE XXXIIL 



Diaphorus mundus. 



Fig. I. Left view of eighth, ninth, and tenth segments. 



Hydrophorus algens. 



Fig. 2. Left view of eighth, ninth, and tenth segments. 



Liancalus hydrophilus. 



Fig. 3. Left side of abdomen. 



Gnamptopsilopus filipes. 



Fig. 4. Fused lobes of tenth segment. 



Fig. 5. Left side of hypopygium. 



Fig. 6. Left side of genital part of abdomen. 



Hydrophorus algens. 



Fig. 7. Left side of abdomen. 



Liancalus hydrophilus. 



Fig. 8. Left side of genital part of abdomen. 



