AKT. 10 EARTHWORM FAUNA OF BURMA — GATES 33 



The prostomium is prolobous, large. 



On segments iv-xii, inclusive, there is a deep secondary furrow 

 posterior to the setae of the segment. On segments vi-xii there is a 

 second deep furrow posterior to the setae of the segments. On viii 

 there are two slight tertiary furrows, one on the anterior third and 

 one on the posterior third of the segment. On ix there are two slight 

 tertiary furrows on the anterior third and one on the posterior third 

 of the segment. On x there is a single tertiary furrow on the ante- 

 rior third of the segment. Posterior to the clitellum there are two 

 secondary furrows per segment, one just anterior to and the other 

 just posterior to the setae. 



The first dorsal pore is in 10/11. Pores are also present in 11/12, 

 12/13, 13/14, 17/18 and posteriorly. There is a nonfunctional pore- 

 like depression on 16/17. 



The setae begin on ii, and are paired. Posterior to the clitellum 

 ab is less than cd which is less than he, aa is greater than he, dd is 

 greater than one half of the circumference. 



The clitellum begins just anterior to the setae of xiii and extends 

 to 17/18. It is interrupted ventrally on xvii by the male papillae. 

 Intersegmental furrows are lacking. All setae are present in normal 

 positions except ah on xvii. 



The male apertures are on xvii, just external to h. Two dark red 

 setae project through each aperture. 



The female pores are on xiv. The right pore is just anterior to 

 seta a, the pore on the left side is anterior to and very slightly 

 internal to a. 



The spermathecal apertures are in 7/8 in line with c. 



The paired male papillae are oval, sharply delimited, and slightly 

 slantwise so that the anterior ends point toward each other. Each 

 papilla extends from just internal to a, nearly to c. On the poste- 

 rior part of the marking is a slight conical elevation bearing at the 

 tip the male pore. Two sharply delimited oval papillae lie in aa on 

 xviii. 



Internal anatomy. — Septa 4/5 and 5/6 are present and thickened; 

 6/7 and 7/8 are absent; 8/9, 9/10, and 10/11 are thickened and dis- 

 placed posteriorly, close together; 11/12 is very thin and attached to 

 the parietes ventrally and laterally close to 10/11, dorsally the 'two 

 septa are in contact so that the seminal vesicles appear to be in con- 

 tact with 10/11 ; the remaining septa are thin and attached normally. 



The gizzard nearly fills segments vi-viii. There are calciferous 

 glands in the wall of the alimentary canal in xii. The intestine 

 begins in xv. 



There are nephridial masses on the parietes in the region of seg- 

 ment iii. 



