128 



s. GOTO. 



canal swollen l)y the .sporin mnss wliidi it oontiiins ; and is tlioroforo 

 siiltjcct to considérai )lo variations in size. 



Tn FjpUt.lcUn tlie ])osition of the external oponini;- of the vagina, 

 is very similar to that in Trixlomini) : in /•.'. fxltihainn' it is only a short 

 distance hehind the common geiiital ])i)re. hut in K. nnihi it is situated 

 ahout midwav l)etween the ])oste.rior end of the pharynx and the 

 anterior end of the ovary, a little internally to the left intestinal 

 trnid-:. and is surrounded hy the compact, refractive tissue alre;idy men- 

 tioned in descrihing other genera (PL XXVI I, figs. 1, o. 4, ä 6). In K. 

 Jslnl.-dinir the vaginal canal makes mimerons windings in its course, 

 and finally opens into the yolk -reservoir ; hut in E. orata it is nearly 

 straiu'ht, and after a short course <^])ens into the yolk-re^ervoir as in 

 t]\e other species. In this genus [ have not ohserved any reccpiinnihiiu 

 semiN/s, hut this mav ])ossil)ly he owing to the ahsence of any s])erm 

 mass at the particular time or in the particular s]->ecimens [ have 

 examined. \ on Linstow'^ does not mention any vagina in Vlijil- 

 Jinr Hcmlorlfii, hut what he describes as the rcceptacuhiui srnriiiis is 

 ]»rol)al)lv nothing else th-in the proximal end of the vaginal canal, com- 

 ])aral)le to the seminal receptacle of Tristoinuiu. Tn V]njl]oui'Jht solene 

 also, the vagina lias not heen descrihed; hut to judge from tlie figure of 

 file worm given hy C u n n in glia m ,-' I helieve it is present likewise 

 in this species. Tlie convoluted dark tuhe drawn hy that writer on the 

 leftside (right side of figure) of the yolk-reservoir in fict re])resents, 

 in mv opinion, the pr<iximal portion of the vaginal canal. 



The wall of the vaginal canal consists in most species of a thin, 

 refractive memlirane similar to that of the larger yolk-ducts ; and 

 T have never ohserved any nuclei in it. Tn ( V///('of///r. however, the 



1). V. liinstow — Beitrage 7.\\v Auatomio von Pliylline Hendovffii. Arclnv f. mile. Anatomit». 

 PkI. 33, 188'J, p. 173. 



2). .7. T. Cnnnincfham — .\ Treatise on tlie Oomiiion Sole, 1890. p. 93. 



