456 



PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 85 



xviii-xxii. The prostatic duet, which extends through several seg- 

 ments, is elongate : the entalmost portion thin, whitish, with one small 

 kink; the middle portion about 4 mm in length, thick, almost straight f 

 the ectal portion thinner and curled or twisted. 



The spermathecal duct is shorter than the ampulla and is narrowed 

 in the parietes. The diverticulum is elongate and looped in a more or 

 less zigzag fashion. 



There are stalked glands in x anterior to 10/11 and in xviii. The 

 stalks of these glands are slender but firm and longer than the stalks 

 of somewhat similar glands in P. hcuwayana and P. diffnngens. 



Remarks. — The account above agrees, on the whole, with that given 

 by Chen for his var. omeimonth. One of Chen's worms lacks tlie char- 

 acteristic patch of genital markings on xi, but it does have genital 

 markings in the region of the spermathecal pores. The variant 

 specimen may be abnormal or possibly specifically distinct. 



As has already been noted on a previous page, Fang's P. para- 

 glanduJaris is a synonym of P. aspergUlum. The Szechwan wonns 

 are clearly distinguished from aspergillum by the presence of a patch 

 of closely crowded genital markings on xi. Var. omeimonti'i must 

 accordingly be raised to the status of a species. 



PHERETIMA PAETA Gates 



1935. Pheretinia pacta Gates, Smithsouiau Misc. Coll., vol. 93, uo. 3, p. 13. 



(type locality: Song Pan, Szechwan; types in the U. S. National 

 Museum ) , 



1936. Pheretinia paeta Chen, Coutr. Biol. Lab. Sci. Soc. China, zool. ser., vol 11, 



p. 300 (after examination of types). 



Material examined. — From Dr. Graham : 4 specimens labeled "Song 

 Pan, mouth of the Yellow Dragon Gorge, July 26, 1924" ; 1 specimen 

 labeled "Yellow Dragon Gorge near Song Pan, 12,000-13,000 feet. 

 July 25-26, 1924." 



External characteristics. — ^Length, 75-136 mm. Diameter, 5-6 mm- 

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

 The ventral setae of ii-ix are slightly enlarged. A mid ventral gap 

 in the setal circles is lacking or very slight, a middorsal gap of vari- 

 able width present. The setal numbers are as follows : 



