BY J. J. FLETCHEK, M.A., B.SC. 569 



Of generative organs there are firstly two pairs of testes, a pair 

 in each of segments xi and xn. Each testis is a white, racemose 

 body, independent of its fellow, those of each pair being attached 

 to the anterior mesenteries of the segments in which they lie. Both 

 pairs are of about the same size : they overlie the intestine, those of 

 each pair touching in the median line. The anterior ciliated funnel- 

 shaped portions of the vasa deferentia lie on either side of the 

 nerve cord in segments x and xi, just in front of the mesentery 

 which bounds each of these segments posteriorly. I have not 

 been able yet to make out the posterior portions of the vasa 

 deferentia, nor under what circumstances they join the prostatic 

 ducts. The prostates are two long (7 mm.), and wide (4 mm.), 

 flattened, lobulated bodies extending over about nine segments 

 from xvni or xix to xxviii, lying on either side of the intestine. 

 The prostatic duct comes off from the anterior inner end of the 

 gland, and is very long and much coiled. The prostates in this 

 species are much larger, and the ducts longer and more coiled than 

 in any other that I have examined. The two ovaries are in the 

 usual position in segment xiii. The oviducts commence opposite 

 these, and open to the exterior in the next segment. There are 

 four spermathecae, a pair in each of segments vm and ix, opening 

 anteriorly • they are pear-shaped with a rather long duct, which 

 gives off a short and rudimentary csecum, wider than high. The 

 spermathecae were distended with fully developed spermatozoa. 

 The vascular system presents a dorsal trunk which is single, and 

 in segments vi to xiii is connected with the sub-intestinal trunk 

 by seven pairs of transverse " hearts," of which those in the last 

 three or four of the segments containing the vascular intestinal 

 pouches are the largest. The usual branches pass to the intestine, 

 and anteriorly vessels are given off to the gizzard and pharynx, 

 but the details require further examination. The segmental 

 organs consist of tufted glandular masses, which are large, stalked, 

 and dendriform in some of the most anterior segments, but smaller 

 and inconspicuous elsewhere. A detailed account of these will 

 be given later. 



Hab. — Mt. Wilson only at present. 



