340 ME. P. H. GOSSE ON THE CLASPING-OKGANS 



Fig. 15. 0. Remus.— The end of the abdomen, both valves removed, arid the walls of the segments in 



part broken away, to show the scapliiura-curtain. 

 Fig. Kb 0. Remus. — The uncus and scaphium, from above. 



In figs. 16, 17, 18, and 19 the small letters have tbe following signification :— a, the uncus; 

 b, the chitinous lamina of the scaphium ; c, its cheek ; d, the sulcus ; e, the aristae ; /, the pentagon j 

 g, the keel; h, its lobes; i, its groin. 

 Fig. 17. 0. Remus. — The same, from the right and somewhat from above. 

 Fig. 18. 0. Remus. — The scaphium, from the front. 

 Fig. 19. 0. Remus. — The scaphium and its keel, from beneath. 

 Fig. 20. 0. Remus. — The penis, extracted. 



Plate XXVIII. 



Fig. 1. Papilio Memnon.— The interior of the right valve, with its harpe in situ. 



Fig. 2. P. Memnon.— The terminal portion of harpe, shown laterally, more magnified, and viewed as a 



transparent object on the stage of the microscope. 

 Fig. 3. P. Memnon.— The abdominal organs. The right valve having been detached, the left and its | 



harpe indicated in outline. 

 Fig. 4. Papilio Mayo. — The interior of the right valve, with its harpe in situ. 

 Fig. 5. P. Mayo. — The harpe detached, and more magnified. 

 Fig. 6. P. Mayo.— The abdominal organs in situ, from the right, the valves having been removed., and 



the segments denuded of hair-scales. 

 Fig. 7. P. Mayo. — The scaphium, more magnified, seen from the front. 

 Fig. 8. /'. Mayo. — The scaphium, seen from the right. 

 Fig. 9. Papilio Erechtheus.— The interior of the right valve and its harpe. 

 Fig. 10. P. Erechtheus— The harpe, more magnified, and viewed from the ventral side. 

 Fig. 11. P. Erechtheus.— The uncus and its abdominal origin, denuded of scales, viewed vertically from 



above. 

 Fig. 12. P. Erechtheus. — The same, seen laterally from the right. 



Fig. 13. P. Erechtheus.— -The organs in situ, with the right valve removed, the left with its harpe, deli- 

 neated in faint outline. 

 Fig. 14. Papilio Rhetenor. — The interior of the right valve, with its harpe in situ. 

 Fig. 15. P. Rhetenor.— Expanded extremity of harpe, further magnified. 

 Fig. 16. P. Rhetenor. — The abdominal organs. 



Fig. 17. Papilio Deiphontes. — Tbe interior of the right valve, with the harpe in situ. 



Fig. 18. P. Deiphontes. — The harpe removed from its attachment, viewed from the ventral side, and 

 further magnified, the terminal portion alone being depicted. 



Fie,-. 19. P. Deiphontes.— The uncus, scaphium, and penis in situ, viewed from the right side, both valves 

 being removed. 



Fig. 20. Papilio Schmeltzi. — Interior of right valve, with the harpe in situ. 



Fig. 21. P. Schmeltzi. — Interior of left valve, with the harpe. 



Fig. 22. P. Schmeltzi.— The extremity of the right harpe, showing the teeth, magnified 140 diameters. 



Fig. 23. Papilio Polymuestor.— The interior of the right valve, with the harpe in situ. 



Fi°". 24. P. Polymnestor. — The harpe further magnified. 



Fig. 25. Papilio Protenor. — The interior of the right valve, with the harpe in situ. 



Fig. 26. P. Protenor. — The harpe further magnified. 



Fig. 27. Papilio Ascalaphus. — The interior of the right valve, with the harpe. 



Fig. 28. P. Ascalaphus.' — The harpe further magnified. 



