(1) 20 (2, 550): 1-24, pls. 22-27 (1911); (1) 20 (2, 556): 25-48, pls. 28-32 (1912); (1) 20 (2, 557): 49-72, pls. 33-38 (1912); (1) 20 (2, 560): 73-104, pls. 39-44 (1912); (1) 20 (2, 563): 105-136, pls. 45-50 (1913 ; (1) 20 (2, 565): 137-152, pls. 51-56 (1913); (1) 20 (2, 567): 153-176, pls. 57-62 (1913); (1) 20 (2, 570): 177-200, pls. 63-68 (1913); (1) 20 (2, 574): 201-216, pls. 69-74 (1914); (1) 20 (2, 576): 217-236, pls. 75-79 (1915).