EXPLANATION OF PLATE XLI. 



Fig 1. — AiJelocephala bisecta, genital armature; <7, elasper; s, specialized, toothed end of suranal plate; }), penis; p', 



penis sheath. 

 Fig. 2. — Si/ssphinx molina. genital armature, side view, showintr penis; 2'/, end view of the same, showing the elasper 



and doubly mucronate suranal plate. 

 Fig. 3. — Anisota rirginien.sis, deeply forked suranal plate, below which is the penis and its sheath. 

 Fig. 4. — Anisota stigma, dorsal view of genital armature, show-ing the deeply divided, specialized end of the suranal 



plate; -in, the same seen from beneath; 4h, side view of the same. 

 Fig. 5«. — Anisota senaioria, genital armature, elasper; 56, side view of the armature. 

 Fig. 6. — Atiisota ruhicunda, deeply bilobed end of suranal plate (.<') ; 6c(, inner view, showing the penis and its sheath; 



6h, the same from Ijeneath; s', the specialized bilolied extremity of the .suranal plate. 

 Fig. 7. — Eacles impcrinlis, side view of elasper; 7(i. suranal plate from above; 7b, genital armature seen from tlie side, 



p/, pleural meml)rane; 7c, a minute adjunct of the penis sheath. 

 Fig. 8. — Portion of male antenna of Eacles imperialis. 

 Note. — Lettering as on Plate XL. 



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