OCR Text |
Show 1900.] EARTHWORMS OF THE GENUS AMYNTAS. 637 pores. Gizzard-septa both present. Sperm-sacs x.-xii. Spermiducal gland occupying 6 segments. Spermathecae almost globular, with duct not so long as pouch. Hab. Christmas Island. 67. Amyntas agrestis. Goto & Hatai. Perichceta agrestis, Goto & Hatai, Ann. Zool. Japon. iii. p. 17. 160 mm., 96 segments. Seta? 36-40. Papillae to inside of spermathecae on vii., viii. Caeca seven pairs. Spermiducal glands entirely absent. Diverticulum of spermathecae long. Hab. Japan. In some specimens there are a pair of papillae upon xviii. 68. Amyntas birmanicus Bosa. Perichceta birmanica, Bosa, Ann. Mus. Civ. Genova, (2) vi. p. 164. 130 mm., 112 segments. Setae 70 on each segment, 15 between male pores. Spermiducal glands in three segments, with bent duct. Spermathecal diverticulum coiled. Hab. Bhamo (Irrawaddi). H. Spermathecae 1 pair in viii. 69. Amyntas zebra Benham. Perichceta zebra, Benham, Ann. Nat. Hist. (6) xviii. p. 442. Amyntas zebra, Michaelsen, Jahrb. Hamb. wiss. Anst. xvi. p. 73. 200 mm., 146 segments. Setae 62 on vi., 78 on xxvi.; 10 setae between male pores. Papillae, one pair between male pores. Spermiducal gland in xvi.-xviii., with curved duct. Diverticulum shorter than pouch, coiled. Hab. Celebes. I. Spermathecae 1 pair in ix. 70. Amyntas pataniensis Mich. Perichceta pataniensis, Michaelsen, Abh. Senck. nat. Ges. xxiii. p. 222. 40-110 mm., 78-120 segments. Setae 40 on v., 54 on xxvi. Male pores and spermathecal pores close together. Papillae present anteriorly as well as posteriorly. Sperm-sacs in xi. Hab. Batjan, Patam, Halmahera. Michaelsen divides this species into two subspecies, of which the first has the species name, the second he terms labuensis. The former has really two pairs of spermathecae, but the anterior pair are small and in process of disappearance. The resemblance of this species to A. halmaherce is considerable, especially in the approximation of generative pores and in the papillae. P R O C . Z O O L . Soc-1900, N o . XLII. 42 |