428 



PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 85 



THE FOLLOWING PLACED DOUBTFULLY IN SYNONYMY : 



1896. Perkhaeta sandvicensis Beddard, Proc. Zool. Soc. London, 1896, p. 203 



(Hongkong). 

 1931. Pherethna hcsperidum Michaelsen, Llngnan Sci. Journ., vol. 8, p. 159 



(excluding Amyntas loehri Michaelsen). 

 1931. Pheretima (Ph.) hesperidum Michaelsen, Peking Nat. Hist. Bull., vol. 5, 



pt. 3, p. 2 (excluding Amyntas loehri). 



Material examined. — From the Hamburg Museum : 1 specimen 

 labeled "V 10423. Pheretima modesta Mich. Yi Leang, SW. China. 

 F. Silvestri leg. 24.2.1925"; 4 specimens (A) labeled '-'Pheretima 

 kiangensis Mich. (= Ph. kiangsuensis Chen) China, Soochow, Biol. 

 Anst. Soochow 1/." From the U. S. National Museum: 3 specimens 

 (B) labeled '"''Pheretima hesperidum., Nanking, China. Ident. by Y. 

 Chen." From Dr. Graham: 5 specimens (C) labeled "Szechwan, 

 7,000 feet, August 29, 1928" ; 2 clitellate specimens labeled "At Lo-Gu 

 in the Ningyuenfu prefecture, 6,500 feet, July 22-23, 1928"; 1 

 clitellate specimen labeled "Suifu, 1,200-2,000 feet, October 30- 

 November 1, 1928"; 1 clitellate specimen labeled "Suifu, 1929." 



External characteristics. — The setal numbers of several specimens 

 are as follows : 



' Oapsin setal rows, setal pits present in gaps, setae possibly pulled out in removing cuticle. 



The apertures of the copulatory chambers are transversely slit- 

 like, the margins of the apertures minutely lobulated. The copula- 

 tory chambers are completely everted in the type of modesta. The 

 apertures of the copulatory chambers may gape open so that the male 

 pores are visible. 



Inteimal anatomy. — The intestinal caeca are simple, the ventral 

 margins usually with several slight incisions. The typhlosole begins 

 just behind the intestinal caeca and extends into the gut lumen as 

 a low but thin and bladelike ridee. 



