426 PROCEEDINGS OF THE NATIONAL MUSEUM vol.85 



The intestine begins in xv. The intestinal caeca are elongate, 

 simple, with 6-8 very definite but short and stumpy, rather broad 

 lobes on the ventral margin, length of lobes less than dorsoventral 

 diameter of the main portion of the sac. 



There is a pair of hearts belonging to ix. The last pair is in xiii. 

 The hearts of x are large, filled with blood, and not held against 

 septum 10/11. All hearts of ix-xiii pass into the ventral vessel. 



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

 vesicles of xi and xii are medium-sized vertical bodies, in contact 

 transversely over the dorsal blood vessel. There is a pair of small 

 club-shaped pseudo vesicles in xiii. The prostates extend through 

 xvii-xviii. The prostatic duct is about 4 mm in length, bent into a 

 U -shape, the ectal half thicker than the ental half. 



The spermathecal duct is rather slender, about equal in length to 

 the ampulla from which it is not sharply marked off, only slightly 

 narrowed within the parietes. The diverticulum passes into the 

 anterior face of the duct close to the parietes and is short, slender, 

 the ental portion bent in a regularly zigzagged fashion, the loops 

 all in the same plane. The diverticula are rather small and may 

 possibly not be fully developed. 



In the parietes dorsal to each genital marking is a glandular mass 

 that projects conspicuously into the coelomic cavity, the dorsal face 

 of the mass rather conical. 



Remarks. — In the coelomic cavities, the seminal vesicles, and the 

 walls of some of the blood vessels there are numbers of parasites, 

 which may have been responsible for a retardation in the develop- 

 ment of the spermathecae and in particular of the spermathecal 

 diverticula. Other organs appear to be normal. 



The male parietal invaginations are very similar to those of 

 P. tschiliensis, P. praepinffuis, and P. pacta. 



P. hiLCcnlenta is distinguished from other octothecal Chinese 

 species of Pheretima by the combination of superficial spermathecal 

 pores and deeply invaginate male pores. 



P. fangi is distinguished from hncculenta^ according to Chen 

 (1936, p. 278), by the larger size of the genital marking in the male 

 pore invagination, the larger size of the male pore invagination, 

 the stout hearts of x, the coiling of the spermathecal diverticulum, 

 and "many other characters." Slight differences in size of genital 

 markings or of hearts, in depth of the male pore invaginations (even 

 if existent) as well as coiling of a spermathecal diverticulum are 

 not acceptable criteria of specific distinctness in the genus Pheretima. 

 The "many other characters" (of specific value) are nonexistent so 

 far as can be discovered from the description given by Chen. As 

 was noted above, the type of hucculenta was heavily parasitized and 



