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



EXPLANATION OF PLATE XXXIL 



Pelastonettrus Icetus. 

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



Psilopus sipho. 

 Fig. 2. Paranal lobes of tenth segment, ventral view. 



Pelastoneurus Icstus. 



Fig. 3. Left view of sheath of penis. 



Fig. 4. Left view of ventral part of penis. 



Fig. 5. Inner view of posterior lateral clasping appendages of right 



side of hypopygium. 

 Fig. 6. Right view of ventral part of penis. 



Tachytrechus vorax. 



Fig. 7. Posterior lateral clasping appendages of hypopygium. 



Fig. 8. Sheath of penis. 



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



Fig. 10. Lateral hooks of penis. 



