186 BEDDARD. 



more correct than that which I have first made with respect to 

 Pheretima benguetensis, for the section of the gut which lies 

 in the XVIth segment, although much narrower than that which 

 ensues and thus more Hke the preceding section of oesophagus, 

 is of the same brown tint as is the large intestine. The large 

 intestine has a shallow typhlosole and a pair of long caeca. 

 These appear to arise in the XXVth segment and, when fully 

 extended forward, to reach as far as the XXth segment. They 

 are thus rather long. 



The testes are contained within the testicular sacs, to be 

 described presently in connection with the sperm sacs, and can 

 be brought readily into view by opening those sacs and washing 

 away the adhering masses of sperm. It is noteworthy that the 

 anterior testis is the smaller and that its position is a little dif- 

 ferent from that of the posterior male gonad. The anterior 

 testis lies nearer to the middle ventral line of the body. It is, 

 also, to be noted that the posterior testis does not lie around or 

 quite close to the vas deferens as it emerges from the Xth seg- 

 ment, as is frequently the case among earthworms. This testis 

 is distinctly farther from the middle line ventrally than is the 

 anterior testis and is thus not in contact with the vas deferens 

 belonging to the anterior testis. 



The sperm-duct funnels of this Pheretima are represented in 

 Plate I, fig. 2. It will be seen that the two of one side of the 

 body, anterior and posterior, are equisized. Furthermore, it is to 

 be noted that they do not hang from the septa into the interior of 

 their respective segments, as is the case with many earthworms. 

 The funnels lie flat upon the ventral body wall and their mouths 

 look directly upward. The periphery of the funnel is regularly 

 folded. The 2 sperm ducts are very distinct on each side of the 

 body as two ducts to the actual point of their connection with 

 the duct of the spermiducal gland. It is important to notice this 

 fact since in several species the two ducts of one side fuse im- 

 mediately behind the posterior funnel. The posterior of the 2 

 sperm ducts, that is, the one which arises from the funnel of 

 segment XI, runs outside. 



There are 2 pairs of sperm sacs situated in segments XI and 

 XII. The posterior pair is very distinctly larger than the an- 

 terior pair and is made up of twice as many tubes. The lobate 

 structure of the sperm sacs is very characteristic of this species, 

 and on a more minute examination each lobe is seen to be 

 divided into tiny lobules. Dorsally, each posterior sperm sac 

 (that is, of segment XII) is capped by a lobe of different ap- 

 pearance, which is not subdivided into minute lobules and is 



