ART. 10 



EARTHWORM FAUNA OF BURMA — GATES 



29 



Figure 16.— Eutyphoeus 



C0N3TRICTUS. SPERMA- 

 THECAL DIVERTICULUM 

 X ABOUT 14 



portion of xvii where it is interrupted by the male area. Setae are 

 present except ah of xvii. Intersegmental furrows are lacking. 

 The male apertures are transverse slits in ab on xvii. 

 The female pores are paired diagonal slits on xiv anterior and just 

 internal to seta a. 



The spermathecal pores are in 7/8, large. The body wall around 

 the pore is swollen and fissured. 



The only genital marking is a slight, dumb-bell shaped elevation 

 on xvii, in cc. Much of the anterior edge is straight, the posterior 

 edge impinges on the anterior 

 portion of xviii. In ab on each 

 side is a slight conical elevation 

 on which are located the male 

 apertures. 



Internal anatomy. — Septa 4/5 

 and 5/6 are thickened, especially 

 5/6; 6/7, and 7/8 are missing, 

 8/9, 9/10, 10/11 are thickened 

 and displaced backwards to- 

 gether; 11/12 is missing or represented only by a 

 ventral vestige. 



The gizzard is wider than it is long. Calciferous 

 glands are embedded in the wall of the alimentary 

 canal in segment xii. The intestine begins in xv. 

 There are three pairs of commissures in the giz- 

 zard segment, one pair anterior to the gizzard and 

 two pairs posterior to the gizzard under 8/9. The 

 last pair of hearts is in xiii. The supra-intestinal 

 glands are in six successive segments about 55 mm. 

 from the anterior end of the worm. The last pair 

 of glands is much enlarged and very dark red in 

 color. 



There are tufted masses of nephridia adherent to the parietes of 

 segment iii. 



The testes and male funnels are enclosed in a median testicular 

 chamber. The seminal vesicles extend from 10/11 to 12/13, pushing 

 12/13 and 13/14 into contact with 14/15. There is a small pair of 

 male funnels on the anterior face of 10/11. The prostates extend 

 through xvii and xviii. The duct is short and looped twice. The 

 vasa deferentia come into contact in xiii and run posteriorly side by 

 side without fusion, into xviii. The fused deferent duct is enlarged 

 as it passes into the parietes immediately behind the penial setae. 



The ovaries and oviduct funnels are in the usual positions in xiii. 

 The spermathecal ampulla is firm and stands erect in the segment. 

 The duct is short and practically confined to the body wall. There 

 are two diverticula, one on each side of the duct. 



Figure 15.— Eutyphoeus 



CONSTRICTUS. PeNIAL 



seta, drawn from a 

 microphotograph 



