NO. 3 NEW EARTHWORMS FROM CHINA GATES 15 



setal on xviii ; markings on xviii in line with male pores, on xii-xiii 

 about in ab. 



Intestinal caeca simple. Testis sacs of x and xi unpaired and ventral. 

 Spermathecal diverticulum with a short, muscular stalk and an elon- 

 gately tubular seminal chamber, the latter twisted into a ball-like mass 

 of loops. 



Type. — U.S.N.M. no. 20105, from Suifu, Szechuan. 



Distinguished from P. planata Gates, 1926, by the posterior loca- 

 tion of the spermathecal pores, the absence of copulatory chambers, 

 and the locations of the genital markings. 



PHERETIMA PRAEPINGUIS, n. sp. 



Length 207-(357?) rn"''> diameter 16 mm. Setae: vii/23, viii/24, 

 xvii/20, xviii/9-f, xix/22, xx/93. First dorsal pore in 12/13. Sper- 

 mathecal pores on tiny tubercles located in parietal invaginations with 

 transversely slitlike apertures, three pairs, in 6/7-8/9. One circular 

 genital marking on the anterior wall of each invagination. Male pores 

 on tubercles in the lateralmost portions of deep parietal invaginations 

 with crescentic apertures, lateral walls of the invaginations thin and 

 nonsetigerous. Just median to each male pore tubercle a single genital 

 marking; on the median wall of the male invagination a transversely 

 oval, presetal genital marking. External genital markings paired, 

 presetal.on vii, viii and ix. 



Intestinal caeca simple. Testis sacs of x and xi unpaired and ventral. 

 Spermathecal diverticulum with a short, muscular stalk and an elon- 

 gately tubular seminal chamber, the -latter with several slight 

 constrictions. 



Type. — U.S.N.M. no. 20106, from Mount Omei, Szechuan. 



Distinguished from P. tschiliensis by the spermathecal invaginations 

 and the genital markings therein. 



PHERETIMA ROBUSTA (E. Perrier), 1872 



In the synonymy of this species there must now be placed the fol- 

 lowing: P. siemsseui Michaelsen, 1931 (in part), P. fokiensis 

 Michaelsen, 1931, P. lauta Ude, 1932. P. lohri (Michaelsen), 1899, 

 can be distinguished from P. robust a only by the small size. The types 

 of P. lohri may be dwarfed forms of P. robusta, the dwarfing the 

 result of a heavy infection of parasitic protozoa. P. lauta Chen, 1933, 

 is probably in large part, if not entirely, synonymous with P. robusta. 

 Chen does, however, dififerentiate between " coast " and " inland " 

 forms, and possibly some of one or both groups may be referable to 



