^RT. 10 



EARTHWORM FAUNA OF BURMA GATES 



17 



The clitellum begins at 12/13 and extends to 16/17(4). Interseg- 

 mental furrows and dorsal pores are lacking. 

 The male apertures are not visible externally. 



The female pores are minute paired slits on an oval whitish area 

 just anterior to and internal to the setal lines aa. 



The spermathecal apertures are minute openings in 6/7 and 7/8 

 in line with a. 



The only genital marking is a deep depression on xvii and xviii 

 between the setal lines hh. Furrows on the lateral walls of the 

 depression mark off an oval area on each side on which is the seminal 

 groove. These grooves are crescentic in shape with the concavity 

 facing anteriorly and outwardly. 



Internal anatomy. — Septum 5/6 is present, thin; 6/7, 7/8, 8/9, and 

 ■9/10 are thickened; 10/11 and 11/12 are slightly thickened. 



The gizzard is slightly elongate in vi. Paired calciferous glands 

 are present at the sides of the alimentary canal in segments ix, x, xi, 



and xii. The intes- 

 tine begins in xiv. 



The last pair of 

 hearts is in xii. 



The testes and 

 male funnels are free 

 in X and xi. The 

 funnels are large. 

 The seminal vesicles 

 of xi are large, filling 

 all of the available 

 space in the segment 

 and coming into contact over the dorsal blood vessel. A small 

 rudiment of a seminal vesicle is present on the posterior face of 9/10 

 on the right side of the alimentary canal. The prostates extend 

 through segments xvii-xx. The prostatic duct is short, thin, slightly 

 flattened, and passes straight down into the parietes. 



The ovaries and oviduct funnels are in the usual positions but in 

 segment xii. The posterior pair of spermathecae is in vii and the 

 anterior pair in vi. 



Distrihution. — Maymyo, F. S. S. 



Remarks. — The length of other specimens varies from 155-205 mm. 

 and the diameter from 3-4 mm. posteriorly to 4-6 mm. anteriorly. 



The prostomium is epilobous but without the transverse furrow at 

 the posterior edge of the tongue on segment i, in all specimens in 

 which it is visible. 



The first dorsal pore of all the specimens is in 9/10. 

 The clitellum begins at 12/13, or just behind the setae of xii, and 

 ends just posterior to the setae of xvi or on 16/17. 



Figure 8.— Notoscolex lunatus. 

 Genital region 



Figure 9.— Notoscolex luna 



TUS. SPERMATHECA X ABOUT 



15 



