1921.] J. Stephenson: Indian Oligochaeta. 757 



There were no genital papillae or other markings. 



Internal Anatomy. — Septum 5/6 is very thin; blj—i^jij^ are 

 all present and all slightly thickened, the first few perhaps a little 

 more than the rest. 



The gizzard in segment v is large, firm, elongated, and l^arrell- 

 shaped. . There is a slight swelling of the oesophagus in segment 

 xii, with close-set transverse vascular striations. The intestine 

 begins in xv. 



The last heart is in xii. 



The excretory system consists of rather small meganephridia. 



The testes and male funnels are free in segments x and xi. 

 Seminal vesicles occupy segments xi and xii ; they are small, those 

 in xi smaller than the posterior pair, are much divided up into 

 small lobules and thus have a racemose appearance ; in both seg- 

 ments they are arranged in the form of a transverse band, contin- 

 uous across the middle line, on the posterior surface of the septum 

 (10/11 and 11/12). 



The prostates are relatively large ; the twisted tuljular glandu- 

 lar portion occupies segments xviii-sxi or xviii-xxii. The duct is 

 very thin, and much shorter than the gland ; it is confined to 

 segment xviii, and pursues a twisted course to pierce the body wall 

 in line with setae b. There are no penial setae. 



The female orsjans have the usual situation. 



The sperm athecae are two pairs, in segments viii and ix (fig. 

 8). The ampulla is of an oval or inverted pear-shape. The duct 

 is about as long as the ampulla, moderately stout, of an equal 

 diameter throughout, and either straight or rather twisted in its 

 course. The single diverticulum is tubular, as long as the main 

 pouch (ampulla plus duct), and arises from the ectal end of the 

 duct ; in one of the four spermathecae its ental half is rather 

 twisted, and showed three small rounded seminal chambers as 

 irregularly arranged swellings; this is the organ illustrated in the 

 figure, which I take to be the fully developed form. Of the other 

 three spermathecae, one appeared to have no diverticulum, and 

 in the remaining two the diverticulum was simply tubular and 

 transparent. 



Remarks. — This species bears a considerable resemblance to 

 P. indicHS, Mich. ; the latter differs however in having the setae 

 cd paired in the preclitellar region, the posterior spermathecal 

 apertures in groove 8/9, the seminal vesicles in ix and xii, a straight 

 prostatic duct, and a shorter spermathecal diverticulum with a 

 single seminal chamber. 



Gen. Megascolides, McCoy. 



Megascolides annandalei, sp. nov. 



(PI. XXVIII, fig. 9)- 



13owlaishvveram, Godaveri Disi. 29viiiigi8. N. Annandale. Five 

 specimens, all sexual. 



