ART. 10 EARTHWORM FAUNA OF BURMA GATES 21 



numbers are v; 40, ix; 48, xii; GO, xix; 68, xxxiv; 70. There is a 

 slight dorsal and ventral break in the setal circles. 



The clitellum extends from 13/14 to 16/17(3). Dorsal pores and 

 intersegmental furrows are lacking. 



In the setal circle of xviii are two very slight conical swellings. 

 Between these swellings there are 20 setae. At the tip of the swelling 

 is a small round opening into a small concavity in the body wall. 

 The lumen of the concavity is practically filled by a single, smooth- 

 surfaced, cylindrical papilla which projects slightly beyond the edge 

 of the opening into the concavity. At the tip of the papilla is the 

 minute male pore. On the conical swelling there are four more or 

 less complete concentric furrows, equidistant from each other and 

 from the edge of the opening into the concavity. 



The female pore is a single small opening at the center of an oval 

 whitish area on xiv. 



The spermathecal pores are in 7/8 and 8/9 about one-half of the 

 circumference apart. There are 25 setae on segment viii between the 

 lines of spermathecal pores. 



The only further genital markings on this specimen are a pair of 

 papillae on segment xviii. These structures are the same in size and 

 appearance as those bearing the male pores. Each papilla is located 

 on the edge of the conical swelling internal to the male pore and 

 slightly anterior to the setae. Each has at the free end a small pore; 



Internal anatomy. — Septa 5/6, 6/7, and 7/8 are thickened; 8/9 is miss- 

 ing; 9/10 is not attached normally to the parietes, but is represented 

 by a delicate sheet of tissue lying against 10/11 in such a way as to 

 inclose a small medio-ventral space containing the anterior testis-sacs 

 and the vascular commissure of segment x. Septa 10/11, 11/12, 12/13, 

 and 13/14 are thickened. 



The gizzard is nearly spherical and occupies the spaces of segments 

 vii, viii, and ix. The intestine begins in xv. The intestinal caeca 

 extend from xxvii into xxiii on the right side and into xxii on the 

 left side. 



There are two pairs of commissures in the combination gizzard 

 segment. The anterior pair passes to the gizzard. The right com- 

 missure of the next pair is atrophied. The commissures of x are not 

 visible until 9/10 is dissected off. The last pair of " hearts " is in xiii. 



There are large nephridial masses dorso-lateral to the alimentary 

 canal in v and vi. 



The anterior testis-sacs are on the anterior face of 10/11 covered 

 over by the rudiment of 9/10. The posterior pair of testis-sacs are in 

 the usual positions in xi. The pau'ed seminal vesicles are in xi and 

 xii, those of xii smaller than the ones in xi. The vesicles are not 

 very large and are well down on the sides of the alimentary canal. 

 The prostates are small and confined to xvii and xviii. Each gland 



