488 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 85 



tionships. In at least two specimens the presence of unpaired testis 

 sacs has been definitely determined. In one specimen in which sep- 

 tum 10/11 is recognizable only in its ventral portion, the part on 

 which the testis sac of x is located is invaginated into xi, while the 

 portion of 11/12 on which the testis sac of xi is located is invaginated 

 into xii. In one of the broken specimens the seminal vesicles of xi 

 appear to extend anteriorly at the sides of the gizzard. 



The only important difference between the account above and that 

 of Chen is in the number of spermathecal setae on viii, 13-20 on 

 the U. S. National Museum specimens, 22-30 on Chen's worms. 

 Some of Chen's specimens are larger and longer than the National 

 Museum specimens and have a slightly more extensive clitellum. 



The genital markings are variable as regards number, location^ 

 shape, and size. 



PHERETIMA TSCHILIENSIS Michaclsen 



1903. Pheretima asiatica Michaelsen, Mitt. Naturhist. Mus. Hamburg, vol. 19, 



p. 11 (part) (Tibet). 

 1928. Pheretima tschilierisis Michaelsp;n. Arkiv fiir Zool, vol. 20, no. 2, p. 13 



(type locality: 50 Cbinese miles east of Hsnan-Hua-Hsien, Chihli ; types 



in the Stockholm Museum). 



1930. Pheretima kianrjsuetisis Chen, Sci. Rep. Nat. Cent. Univ. Nanking, ser. B, 



vol. 1, p. 24 (type locality: ?; types ? Nanking and Soochow). 



1931. Pheretima asiatica (part) + P- tschiliensis Michaelsen, Lingnan Sci. 



Journ., vol. 8, pp. 158, IGO (iiicludiug part of or all the Tibetan forms of 

 asiatica). 

 1931. Pheretima (Ph.) tschilicnsi.s -j- P. lihctana Michaelsen, Peking Nat. Hist. 



Bull., vol. 5, pt. 3, pp. 2, 13 (type locality of tihetnua: River Dracu, 



Tibet; types in the Hamburg Museum). 

 1931. Pheretima tibetana Michaelsen, Zool. Jahrb. (Abt. Syst.), vol. 61, p. 508. 

 1931. Pheretima (Ph.) kiangsuensis Chen, Contr. Biol. Lab. Sci. Sec. China, 



zool. ser., vol. 7, p. 119 ( Szeehwan ; specimens in the Museum of the 



Science Society of China ) . 

 1933. Pheretima tschiliciisis Chen. Contr. Bi<il. Lab. Sci. Soe. China, zool. ser., 



vol 9, p. 250 (Kiangsu, Chekiang, and Anhwei). 

 1935. Pheretima tschilieSnsis Gates, Smithsonian Misc. Coll., vol. 93, no. 3, p. 10. 



THE following DOUBTFULLY PLACED IN SYNONYMY : 



1933. Pheretima yamadai Chen, Contr. Biol. Lab. Sci. Soc. China, zool. ser., vol. 

 9, p. 255 (forms with simple intestinal caeca). 



Material examined. — From the Hamburg Museum: 2 softened 

 specimens (A) labeled "V 10579. Pheretima tschiliensis Mich. 

 China, Prov. Chihli. Pro. Anderson leg. Michaelsen ded. 50 chin. 

 Meilen ostlich von Hsuan Hua Hsien"; 3 specimens (B) labeled 

 "V 5890. Pheretima asiatica (Michlsn) Tibet. Koznakov Dracu" 

 and "jetzt Pheretima tibetana Mich." From the U. S. National 



