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Show Text-fig. 50. Text-fig. 49. 1 9 0 4 .] EARTHWORMS FROM NEW ZEALAND. a - - - Text-fig. 52. Text-fig. 49. Rhododrilus edulis.- A nephridium, shown in its natural relation to the wall of the body, as seen when spread out in the normal way. A , B, C, D [«, b, c, d in the text], the position of the four chagtae of this side ; P, nephrostome; V . L., ventral loops or coils of tubules ; D.L., long dorsal loop extending nearly to chajta D ; C.M.,muscular caecum; N.C., nerve-cord; M.L., dorsal mid-line; N .D., nephridial duct. Text-fig. 50. Rhododrilus edulis.- The prostate of the left side (enlarged). It occupies five segments and is provided with a muscular duct, which thickens as it penetrates the body-wall just below and behind the arcuate muscles (AIL). The penial chaital sac has been removed. Text-fig. 51. Rhododrilus edulis.- A penial cliaeta (X 8 0 . Zeiss oc. 3, obj.3, camera. Text-fig. 52. Rhododrilus edulis.- The tip of a penial chseta (X48 0). |