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Show 1900.] EARTHWORMS OF THE " SKEAT EXPEDITION." 899 The spermathecce, like those of A. stelleri and of a number of other species, are present in several pairs in the segments in which they occur. These segments are the vith to the ixth ; in each there is on either side of the nerve-cord a group of smallish spermathecae up to 8 or 9 in number, each of course with its own diverticulum as usual. Hab. Aring, Kelantan. The species may be thus defined :- Amyntas polytheca, n. sp. Small, slender worm. Setae on anterior larger than on posterior segments. Clitellum xiv.-xvi., with setae on ventral surface of all segments. Genital papillae paired on xvii., xix., xx. Male pores further apart than genital papillae. Gizzard-septa absent; no caeca. Last heart in xii. Sperm-sacs in x.-xii. Spermiducal glands xvii.-xx., lobate, with not long curved duct and no end-sac Spermathecae several pairs in each of segments vi.-ix. Hab. Malay Peninsula. (9) Amyntas aringeanus, n. sp. (Fig. 3, p. 901.) This species has a superficial likeness to A. posthumus by reason of the fact that the xviith and the xixth segments are provided with papillae which lie exactly in the same line as the male pores upon the xviiith segment. A closer examination of these papillae, however, shows that they are not in the least like those of A. posthumus. This species measures up to 115 m m . in length. A specimen which is of that length has 142 segments, a disproportion which is not usual in this genus, where there is generally a very close connection between the number of segments and the number of millimetres in length. The setce show no differences in size in the anterior segments. They appear to be totally absent from the clitellum. The clitellum occupies all of segments xiv.-xvi. The most characteristic feature of the new7 species concerns the genital papillce (see fig. 3, p. 901). These occur both in the neighbourhood of the male pore and more anteriorly. The latter are somewhat unusual in arrangement and position: they commence as early as the fifth segment and there are altogether four pairs of them, the last pair being situated upon segment vii. O n segment vi. there are two pairs of papillae. They are rather large and not very conspicuous and are placed in front of and just overlapping the line of setae. The additional pair of segment vii. are behind the line of setae. The two papillae of segment v. are rather closer together than those of subsequent segments, and there is a slight progressive increase in the distances separating them from first to last. Occasionally two or three pore-like depressions are to be seen like those of the posterior papillae. The posterior genital papillae are upon segments xvii. and xix. They correspond exactly in position to the male pores and are of considerable size. Each papilla is in P R O C . Z O O L . Soc-1900, N o . LIX. 59 |
