CHINESE EARTHWOR]MS GATES 453 



segment there is also a heartlike commissure passing from the dorsal 

 blood vessel to the ventral vessel. The commissures of x pass from 

 the supraesophageals to the ventral trunk. In viii there is a pair of 

 large vessels passing from the dorsal trunk to the gizzard, but no 

 commissures to the ventral vessel were found. The last pair of 

 hearts is in xiii. 



The testis sacs of x and xi are unpaired and ventral. The seminal 

 vesicles are small and lateral in position. The prostates are confined 

 to xviii. The prostatic duct is about 21/0 mm in length, bent into a 

 sort of C-shape, the eotal half thicker than the ental half. 



The spermathecae are large relative to the size of the worm in the 

 clitellate specimen, obviously but partially developed in the aclitel- 

 late worm. The duct is long aiid slender, longer than the ampulla. 

 The diverticulum is longer than the combined lengths of duct and 

 ampulla and passes into the duct close to the parietes. The diver- 

 ticulum comprises three regions: a slender, smooth, ectal portion, 

 A\ hich has a very narrow lumen ; a shorter but slightly wider middle 

 portion that is bent into 2-3 very short loops and in which the lumen 

 is slightly Avidened ; and an ental, ovoidal, thin-walled, seminal 

 chamber. 



In the ])arietes dorsal to each genital marking is a whitisli mass, 

 that does not project into the coelomic cavity. 



Remarks. — Neither of the specimens is in good condition; the 

 aclitellate specimen is softened ; the clitellate specimen very brittle — 

 in spite of considerable care the worm broke into two pieces, the 

 bi-eak slightly in front of the clitellar region. 



Chen (1936, p. 273) places the gizzard in ix (presumably a typo- 

 graphical error) and the male pore (p. 272) lateral to the tubercle 

 in the male pore invagination. 



P. JimelJa is distinguished from P. soysixie Chen, 1933, by the 

 presence and muscularity of sej>ta 8/9-9/10 and by the presence of 

 genital markings. 



PHERETIMA MORRISI (Beddard) 



1892. Perichacta inorrisi Beddard, Proc. Zool. Soc. London, 1892, p. 160 (typo 



locality: Penang ; t.^-pe in the British Museum). 

 1890. Perichaeta insitlae Bkudard, Proc. Zool. Soc. London, 1890, p. 204 (tyjx' 



locality: Hongkong; type in the British Museum). 

 1912. Pherctiwn hroirni Stkphenson, Rpc. Indian Mns., vol. 7. p. 273 (part) 

 (exeluding quadrithecal forms with spermathecal pores on 7/8-8/9; 



Tengyueh. Yunnan). 

 1931. Phefetinia (Ph.) hairaiiaiw Michaei>sen, Lingnan Sci. Journ., vol. 8, p. 



159 (part) (excluding sexthecal forms) ; Peking Nat. Hist. Bull., vol. 



5, pt. 3. p. 3 (part) (excluding sexthecal forms). 

 1931. Pheretima (Ph.) niorrisi Chen, Contr. Biol. Lab. Sci. Soc. China, zool. 



ser., vol. 7, p. 148 (Szechwan). 



82345 — 39 4 



