41. The caudal fin has a strong ventral lobe and undulations on the dorsal lobe margin. 42. The undulations on the route would allow the horse to ride on the downhill sections: 43. Further classification can be made depending on the smoothness and undulations of the solid surfaces. 44. Caudal luring is not merely tail undulations , but must specifically be attractive to prey. 45. The best character for field identification are the undulations along the tergal-scutal margins. 46. The landscape is flat with some undulations and contains a wide range of vegetation types. 47. The undulation between veins two and three is filled in by a dark brown blotch. 48. After 41 years at Augusta, Gary Player still marvels at the undulations of the greens. 49. Small, firm greens with undulation ? 50. No place has quite the undulations or is as hilly, but many are coming close.