CALIFORNIA EtrHRILIP.E. 51 



of tlu' chambers sliiiid alsd in coiuicctioii willi each other as at SI s/i. />. and cSM. 

 In tlicse chainhers are .stored the sperinhalls proper, one in (^aeh, rarely occnpy- 

 ing the whole spaec; of the ehami)er, hut leaving considerable, of the laennary room 

 enijity, it never containing any free spermatozoa, only agglomerations or sperinballs. 

 These spermlialls mav also he seen as while o[ia((ue glohnles from llic outside ol the 

 spermatheca as represented in figs. 81 .1 and /)', s/i. h. 



Teates (figs. 1)4, 95, !)''>.) There are two pair of testes, one in somite x, one in 

 xi, as usual post-septal. The anterior testes are enclosed in the sperm-sac, the jxts- 

 terior ones are generally free. Cross-sections sliow the testes to be deeply multilolied, 

 with the lobes spreading. As regard the enclosing of the anterior testes it may be 

 remarked that it is more or less complete, evidently depending on the size of the 

 sperm-sac. Tu some specimens the testes were entirely enclosed, in others only the 

 posterior ai)ex was invested in the sperm-sac. Tn most sjieeimens the testes were 

 found pressed close ^o the body-wall and projecting backwards, the point of adherence 

 to tile anterior septum being immediately above and adjoining the ciliate<l funnel of 

 the nephridium in line with the ventral setne. 



iSperiu-s(ii-fi. There are three sperm-sacs, more or less Init generally paired in 

 somites x, xi and xii, the one in the latter somite being much more lobed than the 

 anterior ones, and more fre(]uently paired. The two anterior sperm-sacs are much 

 the largest (fig. 96 and 97). They fill the whole somites, are not always paired, l)ut 

 the lobes connect all along the dorsal body-wall. The anterior sac closel}' invests the 

 testes and ciliati-d rosettes in x and furthei'more often encloses the ventral ganglion (fig. 

 9() and 97). The sperm-sac in xi is also often closed on the dorsal side, but it does not 

 invest the testes nor the sperm funnels of that somite (fig. 98). The sperm-sac in xii 

 differs from the other by being deeply lobed in the plane of the trabeculse which are 

 arranged in a fan-like shape from the alimentary canal. This sperm-sac which is 

 seldom paired, does not extend below the alimentary canal as the anterior ones do, 

 but so to say rests entirely on the intestine (figs. 8(5 and 99). The anterior sperm-sacs 

 are also traversed by numerous trabecuUe, which however are irregularly arranged 

 (fig. 100). The sperm-sacs are frequently infested with parasitic coccidise of round 

 shape and with from one to three germ cells (fig. 100, coc) In size the sperm-sacs 

 are so large that they i)usli far l)ackwartls, the one pair covering the other, the 

 whole mass often reaching as far back as to touch the prostate, thus entirely covering 

 the ovary and ovidncts. This is especially evident in transverse sections when the 

 ovary, oviduct and the three sperm-sacs may be seen at once. 



The ovnry is, as usual, found in xiii and offers no great peculiarities. It is 

 generally deeply lobed, and in cross-section shows the same projecting lobes us the 

 testes. 



The ocidud is rather thin and characterized by a thick and long npper lip 

 (fig. 103 u. L), which generally is bent to one side. In one instance the upper lip 

 was forked (as in fig. 103, c). The muscle attaching the upper part of the oviduct to 

 tlie body-wall is unnsually strong (fig. 103, vi. s.). 



