1900.] EARTHWORMS OF THE " SKEAT EXPEDITION." 897 



Amyntas. The pouches are not large and have but a short duct ; 

 they taper gradually towards the free csecal extremity, which gives 

 to them a pear-shaped outline. 



The diverticulum of each spermatheca is considerably longer 

 than the pouch ; it is tubular in form, and the greater part of it is 

 coiled into a tight knot-like coil. This, however, could be un- 

 ravelled, though I have not done so. There is no external sheath 

 enclosing the whole coil such as exists in A. peguanus. The end of 

 the diverticulum is only very slightly dilated to form the sac-like 

 extremity. 



Hah. Malay Peninsula 1 . 



"We may thus define 



Amyntas perichceta, n. sp. 



Length 170 mm. ; number of segments 110. Setae of anterior 

 segments not enlarged. Clitellum xiv.-xvi., without seta?. No 

 genital papilla?. Male pores far apart. Gizzard-septa missing. 

 Caeca present. Last hearts in xiii. Sperm-sacs in xi., xii. Spermi- 

 ducal gland in xvii.-xix., with not long, horseshoe-shaped duct 

 and terminal sac. Spermatheca? 3 pairs in vi.-viii., with much- 

 coiled diverticulum, much longer than the pouch. 



Hab. Malay Peninsula. 



(8) Amyntas polytheca, n. sp. (Pig. 2, p. 898.) 



The same tube which contained the numerous specimens of 

 A. helantanensis contaiued a single example of a small Amyntas 

 which differed from these by its pale (light brown instead of violet) 

 coloration. It proved to be the representative of a distinct new 

 species. The single example was imperfect and I do not therefore 

 give accurate measurements ; it is a slender worm and can hardly 

 have been more than two inches in length. 



The setce on the anterior segments are larger than on those 

 which follow. 



The clitellum occupies the usual three segments and has seta? 

 very plainly present upon the ventral side of all of them. 



The male pores (see fig. 2, p. 898) are exceedingly prominent 

 as large round protruding discs, which are widely apart. 



On the segment in front of that which bears the male pore and 

 upon the two segments following are a pair of genital papilla of 

 much smaller size than the porophores and rather closer to the 

 middle ventral line of the body. 



The alimentary canal of this species has the usual strong gizzard, 

 which is rather elongated in form and not so globular as is often 

 the case. The usually missing gizzard-septa are often absent in 

 the present species. The intestine begins in the xvth segment and 

 has not any cceca. The typhlosole is quite conspicuous. 

 The last pair of hearts are in segment xii. 



The arrangement of the sperm-sacs is rather different from that 

 which usually obtains in this genus. There are large pairs in 



' I have not seen a label indicating the exact locality. 



