1900.] EARTHWORMS OF THE " SKEAT EXPEDITION." 899 



The spermatlieew, 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. 



Hah. 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 seta? 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. 



Sab. Malay Peninsida. 



(9) Amjmtas 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 mm. 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 seta; 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 new species concerns the 

 genital papilla (see fig. 3, p. 901). These occur both in the neigh- 

 bourhood 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. On 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. Occa- 

 sionally 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 



Pboc. Zool. Soc— 1900, No. LIX. 59 



