Aa,T. 10 



EARTHWOBM FAUNA OF BURMA — GATES 



15 



Figure 6.— Notoscolex depressus. 

 Genital region 



The only genital marking is a horseshoe-shaped ridge on xvii and 

 xviii. The opening of the horseshoe is directed posteriorly. The 

 arms of the horseshoe are in the region he, nearer h than c. The 

 seminal grooves lie in this ridge, except anteriorly, where they turn 

 off from the ridge and bend inwardly to end blindly on the anterior 

 wall of the depression. The region within 

 the ridge is depressed, the depression slop- 

 ing more deeply anteriorly. 



Internal anatomy. — Septa 6/7, 7/8, 8/9, 

 9/10, and 10/11 are thickened, 11/12 and 

 12/13 are slightly thickened. 



The gizzard is slightly elongated in vi. 

 Paired calciferoiis glands are attached to 

 the alimentary canal in segments ix, x, xi, 

 and xii. The intestine begins in xiv. 



The last pair of hearts is in xii. Paired 

 commissures are also present in segments 

 vi-xii. 



The testes and male funnels are free in 

 segments ix and x. The seminal vesicles are small paired structures 

 in X and xi on the posterior faces of the septa at the sides of the ali- 

 mentary canal. The prostate extends through segments xvii-xxiv on 

 the left side and xvii-xxiii on the right side. They lie at the sides 



of the alimentary 

 canal and cover the 

 dorsal surface of the 

 intestine only in 

 xxiii and xxiv where 

 the posterior end of 

 the gland is bent up- 

 ward so as to come 

 into contact with the 

 dorsal blood vessel. 

 The prostatic duct 

 is nearly straight, 

 about three millimeters long, and slightly flattened. The prostates 

 are rather thick and are slightly flattened laterally. 



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

 segment xii. Both pairs of spermathecae are in segment vi. The 

 ducts of the posterior pair pass back through 6/7 and vii and into 

 the body wall in 7/8. The ducts of the anterior pair^'pass into the 

 body wall in 6/7. 



Distribution. — Maymyo, F. S. S. 

 27799—29 3 



Figure 7.— Notoscolex depressus. Spermathecae X about 15 



