ART. 10 



EARTHWORM FAUNA OF BURMA GATES 



31 



The male pores are in line with or very slightly external to h at 

 the center of white glandular areas at the bottom of the depression 

 on xvii. 



The female pore is single, anterior and very slightly internal to a, 

 on the center of a small, oval, whitish area on the left side of xiv. 



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



The genital markings are the deep depression on xvii and two 

 bluntly oval, large, median papillae on 14/15 and 15/16. These 

 papillae are whitish, smooth-surfaced, slightly concave areas which 

 extend externally to just beyond the line b, and antero-posteriorly 

 nearly to the setae of the segments concerned. The posterior papilla 

 is slightly smaller than the anterior, and both are delimited by sharp 

 circumferential furrows. On xvii is a trans- 

 versely elongate slit in cc opening into a 

 depression in the parietes 2-3 mm. deep. 

 The body wall around the aperture is swollen, 

 especially around the ends of the slit. On the 

 anterior and the posterior walls of the depres- 

 sion, in the region bb, are pau'ed smooth-sur- 

 faced glandular areas. Columnar porophores, 

 present in closely related Burmese species of 

 the genus, are entirely lacking here. 



Internal anatomy. — Septa 4/5 and 5/6 are 

 present and much thickened, especially 5/6; 

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

 are thickened and displaced backwards togeth- 

 er; 11/12 is absent or is represented only by 

 the connective tissue forming the wall of the 

 testicular chamber. This chamber is in the shape of a U inverted 

 over the alimentary canal. 



The diameter of the gizzard is slightly greater than the length; 

 there is a slight rim on the posterior end. There are calciferous 

 glands in the wall of the alimentary tract in xii. The intestine begins 

 in XV. 



There are large tufted masses of nephridia adherent to the parietes 

 of segment iii. 



The dorsal blood vessel ends with the more anterior of the two 

 pairs of commissures under 8/9. The last pair of hearts is in xiii. 



The testes and male funnels are in the testicular chamber. The 

 seminal vesicles are large, extending from 10/11 to 12/13 which is 

 pushed back into contact with 13/14. The tubular prostates extend 

 through xviii-xx and xviii-xxi. The duct is long and looped in xvii 

 and xviii. 



The vas deferens passes under the prostatic duct, turns in toward 

 the nerve cord, and is enlarged as it passes into the parietes. 



Figure 17.— Eutyphoeusexca- 

 VATus. Genital region 



