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



EXPLANATION OF PLATE XXXL 



Dolichopus ovatus. 

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



Pelastoneurus vagrans. 

 Fig. 2. Left side of abdomen. 



Dolichopus ovatus. 



Fig. 3. Lateral posterior clasping appendages and ventral pos- 

 terior lateral lobe of hypopygium. 



Pelastoneurus vagrans. 



Fig. 4. Median posterior appendages of hypopygium. 



Neurigona superbiens. 



Fig. 5. Lateral posterior clasping appendages of right side of hypo- 

 pygium, inner view. 



Pelastoneurus vagrans. 



Fig. 6. Lateral posterior clasping appendages and ventral pos- 

 terior lobe of hypopygium. 



Psilopus sipho. 

 Fig. 7. Dorsal view of ventral part of penis and its sheaths. 



Neurigona superbiens. 

 Fig. 8. Left side of abdomen. 



Psilopus sipho. 

 Fig. 9. Left side of genital part of abdomen. 



