450 PROCEEDINGS OF THE NATIONAL MUSEUM \ol. 85 



Both hearts of ix are present. The hist pair of hearts is in xiii. 

 All hearts of ix-xiii pass into the ventral vessel. 



The testis sac of x is U-shaped; the limbs of the U passing dorsally 

 at the sides of the esophagus contain the hearts of x. The testis sac 

 of xi is also U-shaped and the limbs of the U contain in addition to 

 the hearts of xi the seminal vesicles of that segment. The prostatic 

 ducts are C- or S-shaped. 



The last two pairs of spermathecae are in viii, one pair opening 

 to the exterior posteriorly. The spermathecal duct is shorter than the 

 ampulla, the coelomic portion stoutish and rather definitely marked 

 off from the ampulla. The parietal portion of the duct is much nar- 

 rower than the coelomic portion. The diverticulum passes into the 

 duct in the parietes. When the spermatheca is pulled out from the 

 parietes the ectal ends of the duct and diverticulum are surrounded 

 by soft whitish tissue, which can be easily dissected off. Tlie di- 

 verticulum is much longer than the combined lengths of the duct 

 and ampulla and comprises a short, firm, glistening, slenderly tubu- 

 lar stalk, which is a trifle longer than the duct and a much longer 

 and wider seminal chamber with a thin, wrinkled wall. 



There is softish glandular material in the parietes dorsal to each 

 of the genital markings, but this material does not project con- 

 spicuousl}' into the coelomic cavity and is not visible until after the 

 removal of connective tissue. 



Reinarks. — The original material has not been examined. 



In the original descri[)tion the spermathecal pores were said to be 

 two pairs on 7/8-8/9. In the 1899 paper, after reexamination of the 

 original material this was corrected to three pairs on 6/7-8/9. 



According to Chen (1931) the spermathecal pores are on the inter- 

 segmental furrows, but behind each pore and on the anterior margin 

 of the segment is a "bun-shaped papilla." If Chen's specimens are 

 like the Haip.burg worm the spermatliecal pore is in reality on the 

 papilla. Chen found "about 10" setae on viii between the spermathe- 

 cal pore lines. 



PHERETIMA IGNOBILIS Gates 



1935. Phcretima iguohiUs Gates, Smithsonian Misc. Coll.. vol. 93, no. 3, p. 11 



(type locality: Ningynenfu, Szechwan ; type in the U. S. National 

 Museum). 



1936. Pherctima igriobilis Chex, Contr. Biol. Lab. Sci. Soc. China, zool. ser., vol. 



11, p. 299 (after examination of type). 



Material examined. — From Dr. Graham: 1 aclitellate specimen 

 labeled "Near Ningynenfu, 7,000 feet, July 28, 1928." 



External characterhfie^. — Length, .55 mm. Diameter. 3 nun. 



The setae begin on ii, on which segment there is a complete circle. 

 Setal formula: vi/17, vii/16, viii/l(), xvii/l'), xviii,'9, xix/16. 



The first dorsal nore is on 11/12. 



