216 DR. W. B. BEKHAM ON 



the same thing. In P. maJamaniensis the sperm-duct crosses 

 the great glandulo-muscular bulb, as ordinary dissection shows, 

 and passes apparently into the narrow duct of the gland (a, 

 fig. 6 a); but in reality the two sperm-ducts together run along- 

 side this penial duct for some distance, then unite together, 

 and the single sperm-duct accompanies the duct of the gland 

 throughout the whole length of the penis, only opening into the 

 gland-duct close to the tip of the latter, where it undergoes a 

 slight dilatation. The conjoined duct now opens by two pores, 

 just below the tip of the penis. 



The epithelium of the sperm-duct and gland-duct are quite 

 different, as can readily be distinguished in section. In P. Arturi 

 precisely the same thing occurs (text-fig. 3); but, owing to poor 

 condition of preservation, the difference in the lining is not so 

 readily recognized, and if it were not for the observation in 

 jP. malamaniensis might have been overlooked. 



The spermatheca (PI. 16. fig. 6 h) is of considerable size and 

 lies iu segment viii. The sac is large and globular, with a 

 thick muscular duct, nearly as long as itself; into it there opens 

 a small diverticulum, consisting of a slightly undulating muscular 

 duct, terminally dilated to form a small oval sac. 



The present species may be diagnosed thus : — 



Pekich^ta malamanieksis, Benham. 



Brown ; 100 mm. X 5 mm., with lOl segments. Male pores 

 slit-like, separated by 10 chaetse ; no copulatory papillae ; a 

 single pair of spermathecse opening between segments Yii./viii., 

 consisting of an enormous globular sac, with long stout duct, 

 receiving a small diverticulum, terminally dilated. Dorsal pore 

 xii./xiii. Chsetal ring with dorsal gap ; 50 chsetge in front of 

 and 60 behind the clitellum. Spermiducal gland in two distinct 

 lobes ; a glandulo-muscular duct, containing a distinct tubular 

 penis. 



Hah. Malamani, Philippine Islands. 



Ferichceta Floioeri and P. Madelines. 



I take this opportunity of describing two other species of 

 Perichata which appear to be new to science. Both were 

 received through the courtesy of Prof. P. J. Bell, for identi- 

 fication, and have been returned to the National Collection. My 



