Plate VII. 



Fio, 



^^a. rip of bristle of Pcctiiuniii ctifcii^is, Pallas. X 150 diam. 



35b. Tip of an injured bristle fiom the same region. X 150 diam. 



36. Hook of tlic same species in lateral view. X Zeiss oc. 2, obj. D. + 3 in draw- 



tube. 



37. Hoolc of TIiclcpiis—? X As in tlic fore.ijoing. 



3S. I'piper bristle of Polniiiillii rciiif'oniiis, O. F. M. X As before. 



3g. Tip of upper spalliulate bristle of the same species, x As in tlie forecjojn.tj. 



40. Tip of a lower spathulate bristle of the same form. X As before. 



41. Hook of the same form. X As in the previous example. 



42. Tip of a bristle from the posterior region of the same species. Similarly 



niagnilied, 



