448 



MR. LUBBOCK ON THE THYSANURA. 



EXPLANATION OP THE PLATES. 



Fig. 1. Smynthurus Buskii. 



•^* 33 35 



4. 



•'• ■) 33 



6. 



7. 



8- 



9. „ „ 



10. „ „ 

 Il- 

 13. 

 14. 



15. Papirius cm 

 16. 



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Plate XLV. 



Mandible, x 60. 



Tip of the same, x 250. 



Mandible of other side, x 60. 



Tip of the same, x 250. 



Maxilla, x 60. 



Tip of the same, x 250. 



Labrum, x 250. 



Palpus, X 250. 



Second maxilla, x 250. 



Leg of third pair, x 60. 



Foot, X 250. 



Spring, X 60. 



Part of the same, x 250. 



Anal appendages, x 250. 

 Antenna, x 60. 

 Tip of the same, x 250. 

 17- „ « Upper lip, X 250. 



18. „ „ Tips of the two mandibles, X 250. 



19. „ „ Palpus, X 250. 



20. „ „ Maxilla of the second pair, x 250. 



21. „ „ Leg of the thu'd pair, x 60. 



22. „ „ Foot of the first leg, X 250. 

 2.3. „ „ Foot of the third leg, X 250. 



Plate XLVI. 



24. „ „ Spring, x 60. 



25. Gregarina oi P. cursor. 



26. Papirius Saundersii. Upper lip, x 250. 



27. „ „ Tip of first maxilla, X 250. 



28. „ „ Tip of second maxilla, x 250. 



29. „ „ Palpus, X 250. 



30. „ „ Lower lip, x 250. 



31. „ „ Foot of anterior leg, x 250. 



32. „ „ Foot of posterior leg, x 250. 



33. „ „ Anterior abdominal appendage, x 250. 



34. „ „ Anal hairs, x 250. 



35. Ventral tentacles retracted, Smynthurus Buskii, x 60. 



/. Point of attachment of basal muscle. 



g. Branch of basal muscle. 



h. Apical muscle. 



i. Papillae turned outside in. 



a. Orifice of tube. 



b. Basal part of tentacle. 



c. Apical part of tentacle. 



d. Point of attachment to dorsal surface. 



e. Basal muscle. 



Fig. 36. Ventral tentacles, Papirius purpureus, partially extended, x 60 



Fig. 37. Female generative organs, Smynthurus Buskii. 



Fig. 38. Male generative organs, Papirius Saundersii, x 60. 



Fig. 39. Spermatozoa, x 250. 



Fig. 40. Earlier stages of spermatozoa, x 250. 



Fig. 41 . Greenish cellules occurring in considei-able numbers in the male generative organs, x 250. 



Fig. 42. Large transparent cells occurring in considerable numbers in the male generative 



organs, x 250. 

 Fig. 43. Pajiirius Saundersii. 



