new Cypriaodont Fish from Johore. 



553 



the walls of the duct are thick and glandular, and from its 

 narrowed anterior end it emerges and runs with one or two 

 loops into the priapium at the posterior end of its junction 

 with the body, and then backwards and downwards near the 

 surface of the aproctal side of the priapium to above the base 

 of the ctenactinium, when it passes to the proctal side and 

 coils round in a complete circle before opening to the exte- 

 rior; this terminal coil has very thick muscular walls. 



Fig;. 4. 



JV J 



Pkattostethus dunckeri. Dissection of female and male (partly recon- 

 structed). The pectoral arch and muscles of the left side have been 

 removed ; also the liver, which occupies nearly all the space between 

 oesophagus and intestine and almost surrounds the stomach. 



a?., oesophagus ; st., stomach ; i., intestine ; mi., anus ; «., air-bladder ; 

 u., ureter; u. ', urinary opening; o., ovary; g., opening of oviduct; 

 t., testis ; v.d., vas deferens ; pv., pelvis ; ch, priapial process of cleithra. 



The intestine enters the priapium a little in front of the 

 vas deferens and runs downwards and obliquely across to the 

 anus; the kidney-duct accompanies the intestine and opens 

 to the exterior just behind it. 



Immediately in front of the intestine a bony process runs 

 downwards from the cleithral symphysis to just in front of 

 the vent, and is produced forwards as a bony rod that forms a 



Ann. & Mag. N. Hist. Ser. 8. Vol. xii. 39 



