ON A NEW ECH1UROID. 



to a conclusion that this female specimen is full grown and had passed 

 the spawning season. 



The single unpaired oviduct [ovd) is found on the right side (if, 

 and very close to, the ventral nerve-cord (Fig. 7). Being very small 

 (8 mm. long and 2 mm. thick) and completely hidden under the 

 large pharynx, it can be seen only when the pharynx is removed. 

 It consists of an elongate thin-walled sac and a short, narrow and 

 thick-walled neck. It opens to the exterior by a pore situated, as 

 already stated, about 8 mm. behind the anterior end of the body 

 proper. A small fimbriated funnel {of) with a long stalk is present 

 near the junction of the neck to the sac. No eggs are found in the 

 oviduct. As wc know in other Echiuroids, the small size of the 

 oviduct indicates that this specimen was taken between breeding 

 seasons. 



Three males (Fig. 8) were found in the vesicular portion of the 

 oviduct. They appear somewhat like a Nematode curled like S. The 

 surface seems quite smooth to the naked eye. All are of the same 

 size, being 4 //////. long and 0.173?///«. in maximum diameter. The 

 entire surface is thickly and uniformly covered with short cilia. As 

 in the female, no ventral hook is present. 



The internal organization of the males is represented in Fig. 8 

 which is drawn from a borax-carmine preparation. The coelom is 

 quite spacious throughout the greater part of the body (about 0.36 //////. 

 long), excepting the two terminal portions where the parenchyme fills 

 up the cavity. 



The most conspicuous organ in the coelom is the spermatic reservoir 

 (.sv), a relatively long (2.3 //////.) and thick tubular sac filled with sper- 

 matozoa. Anteriorly the sac abruptly passes over into a narrow vas 

 deferens (vd) which makes its way straightly forwards through the 

 parenchyme to open to the exterior a little posterior and ventrad to 

 the tip of body. Posteriorly the reservoir ends with a small, short- 

 stalked, ciliated funnel (sf) which opens into the coelom. 



