CHINESE EARTHWORMS GATES 409 



Material examined. — From Dr. Graham : 6 aclitellate or partially 

 clitellate specimens and 1 clitellate specimen labeled "Suifu, Sept. 

 1924." 



External dxaracteHstics. — Length, about 55 mm. Diameter, 4 mm. 



The setae begin on ii and are closely paired ; aa about equal to or 

 slightly greater than 6c. 



The clitellar coloration (reddish) extends over segments x-xiii 

 and onto the posterior portion of ix. 



The spermathecal pores are tiny transverse slits or rounded pits 

 on 7/8, halfway between h and c. The female pores were not identi- 

 fied. 



The male pores, small apertures in 6(?, nearer to h than to c, are 

 on slightly protuberant porophores, which are not, on some speci- 

 mens, clearly delimited. In those specimens on which the preserva- 

 tion of these structures is the best, the male pore is at the ventral 

 tip of the protuberance and in line with intersegmental furrow 

 10/11, the latter ending blindly on the lateral and median sides of 

 the porophore. The anterior margin of the porophore may be indi- 

 cated by a slight transverse groove, which does not pass into the 

 intersegmental furrow. The posterior margin of the porophore is 

 marked off by a short transverse furrow that passes laterally and 

 mesially into 10/11. 



The genital markings are transversely oval to circular, convex 

 areas of grayish translucence ; the margin sharply delimited by a 

 slight circumferential furrow. The epidermis immediately around 

 each marking may be specially whitened, but a definite rim such 

 as characterizes the markings of Z>. japonica seems to be lacking. 

 The markings are located on segments vii-xiii as follows: 



1. Segment viii — middle annulus, both sides, in 6c; ix — middle annulus, both 

 sides, in be; x— middle annulus, left side, in 6c; xi— middle annulus, both sides, 

 in he. 



2. Segment ix— presetal, both sides, about in line with the spermathecal pores ; 

 xi— middle annulus, both sides, in 6c; xii— presetal pair in aa; xiii— presetal 

 pair in aa. 



3. Segment vii — presetal, both sides, in 6c and a postsetal median ; x — poste- 

 rior annulus, both sides, in 6c; viii — middle annulus, both sides, in ah; ix — 

 posterior annulus, both sides, in 6c; xi — middle annulus, both sides, in 6c; 

 xiii — presetal, median pair. 



4. Segment viii — presetal, left side, in 6c; ix — presetal, both sides in 6c; 

 xii — middle annulus, both sides, in 6c; xiii — presetal, median pair. 



5. Segment vii — anterior annulus, both sides, in a 6 and a posterior median; 

 viii — anterior annulus, left side, in 6c; ix — presetal and median; x — postsetal 

 and median ; xi — middle annulus, left side, in 6c and one presetal median ; 

 xiii — one presetal median. 



6. Segment vii — postsetal, left side, in 6e, and one slightly to the right of the 

 midventral line; viii— presetal, right side. In 6c; ix— presetal, left side, in 6c; 



