CHINESE EARTHWORMS — GATES 411 



japonica (note that Chen gives the number of gizzards as two or three 

 and compare with statements regarding number of gizzards in gra- 

 hami supra and japonica infra; also compare Chen's comments on the 

 ovisac appendages with the account given below). Chen failed to 

 notice the characteristics of the prostates, which is indeed "unfortu- 

 nate," as these organs are of first importance in systematic discrimina- 

 tion in the genus Draioida. 



DRAWroA JAPONICA (Michaelscn) 



1892. Moniligaster japonicus Michaelsen, Archiv fiir Naturg., vol. 58, p. 232 



(type locality: Japan). 

 1927. Drawida japonica f. typica Michaexsen, Boll. Lab. Zool. Portici, vol. 21, p. 



85 (Yunnan-fu). 

 1931. D)-amida japonicus Michaelsen, Llngnan Scl. Journ., vol. 8, p. 157 (part) 



(excluding f. siemsseni) ; Peking Nat. Hist. Bull., vol. 5, pt. 3, pp. 1, 7 



(part) (excluding f. siemsseni) ; Zool. Jahrb. (Abt. Syst.), vol. 61, p. 



523 (part) (excluding f. siemsseni and in the synonymy D. willsi). 

 1935. Drawida japonica Gates, Smithsonian Misc. Coll., vol. 93, no. 3, p. 3. 



Material exatnined. — From the Hamburg Museum: 3 specimens 

 labeled "V 1194. Drawida japonicus Mich. f. Typ. Dr. Chen F. Wu c. 

 Dr. Michaelsen a. Nanking, China." From Dr. Graham : 2 clitellate 

 specimens labeled "Suifu, Szechwan, 1929"; 2 clitellate specimens la- 

 beled "Near Yueh Shi, 6,000-8,000 feet, August 11, 1928"; 1 specimen 

 with slight clitellar coloration labeled "Near Mupin, July 8, 1929"; 1 

 clitellate specimen labeled "Tatsienlu, 8,300 feet, July 16, 1930." 



External characteristics. — Tiie length varies from 39 to 65 mm, the 

 maximum diameter from 1 to 2 mm. 



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

 to or slightly less than he. 



The clitellar coloration varies from pink to red and extends over 

 segments x to xiii and onto the posterior portion of ix. 



The spermathecal apertures are tiny circular pores or short trans- 

 verse slits on 7/8, on or just median to c. The female apertures are 

 minute, grayish spots, each pore at the bottom of a transversely slitlike 

 depression on the anterior margin of xii close to 11/12, in ah. 



The male pores are readily recognizable or scarcely visible and are 

 located on segment x on the ventral faces of more or less protuberant 

 porophores in 5c, nearer to h than to c. Intersegmental furrow 10/11 

 passes behind the porophores and is slightly displaced posteriorly in a 

 concave fashion just behind each porophore. The anterior margin 

 of the porophore may be demarcated by a slight transverse furrow, 

 which does not pass at either end into furrow 10/11, or the furrow may 

 be lacking, the porophore represented only by a slight parietal pro- 

 tuberance on which the male pore is located. The median margin 

 of the porophore is at h or very slightly lateral to h. 



