'96 



ON" THE CH^TOSOMATIDyE, 



pearance of being a solid cord, but the dense, finely granular 

 substance filling it, is probably a spermatic fluid, which has 

 become coagulated in the fixing. It is impossible to examine it 

 in the living state, owing to the difiiculty of keeping the actively 

 moving worm in the field, under a high power. Posteriorly, the 

 sperm-duct diminishes in width. There are two, equal, penial 

 seta3 (PI. xlvi.; Text-fig.'2Q, p.s.), and an accessory organ. The 

 setie are long, and are curved into a bow-shape, with enlarged, 



club-like, proximal ends 



^~vs 



Fiq.fJ. 



Figs 42-44.— CA. Imf^wclll, ir Fig.45.— CA. Aa.s/re//«.t 



The female genital pore (Figs. 46, 47, 9 9-V) i^ ^ transverse 

 slit, with prominent lips, situated on the ventral surface just 

 about the middle of the trunk. There are two, large and well- 

 developed ovaries (Fig. 46, a.ow, jy.ov.) situated, one anterior and 

 one posterior to the genital pore. The end of each, furthest 

 from the pore, is roughly conical in shape, about 0*074 mm. long, 



* Series of sections through the trunk; ( x 630). The sections have been 

 laterallj^ compressed, and the internal structure somewhat distorted. 

 Fig. 42 — A section through the anterior part of testis. Fig. 48, through 

 the vas deferens. Fig. 44, through the sperm -duct, in the region of the 

 ventral setae. 



t L.8. through male genital tube, in region between the vas deferens 

 and the vesicula seminalis, showing the finelj^ granular matter in which 

 tlie sperms are embedded at the junction; ( x 680). 



