16fi MR. F. V. BEDDARD ON -WORMS [Feh. 16, 



siriflllness nf the atria and the spermathecse as a characteristic of the 

 species. Each speruiatheca consists ol' a globular portion communi- 

 cating with the exterior by a narrow duct, to which is appended a 

 small diverticulum consisting also of a swollen terminal portion and 

 of a narrow duct. 



Perich^ta morrisi, n. sp. 



I name this species, of which I obtained several living examples 

 from Kew, after Mr. Morris, Assistant Director of the Royal Gardens. 

 Three or four specimens were forwarded to me, of which only one 

 was sexually mature ; the following description is based upon that 

 specimen. 



The species comes from Penang. 



The accompanying coloured sketch by Mr. Smit (Plate IX. fig. 1^ 

 represents the natural colours of the worm and shows its distinctness 

 from PericJicEta sinensis, with which species, however, it caimot be 

 confounded, as will be seen in the course of the following description. 



The worms during life protruded the buccal cavity, as apparently 

 all species of PerichcBta do. 



The length of the specimen (after preservation in weak, followed 

 strong, alcohol) is 52 mm. ; the number of segments in the body 

 is 93. 



The setcB, as in other species, form continuous rows. 



The clitellum begins abruptly with the commencement of segment 

 xiv., but does not terminate exactly at the posterior boundary of 

 segment xvi. ; the glandular substance ends at the level of the setae 

 which are present on the last segment of the clitellum, as in Peri- 

 chteta bermudensis (see p. 160) ; the setae of this segment, as in the 

 species with which I have compared Perichceta morrisi in this 

 particular, are only present upon the ventral surface. 



The oviducal pore occupies the usual position. 



The atrial pores open on to the xviiith segment, and are not 

 separated by a very wide interval ; they are in the line of setae, but 

 the setae cease for a short space on either side of each pore. 



The spermathecal pores lie between segments v./vi. and vi./vii. 



There are no pnpillee in the neighbourhood of the male pores, 

 although on a subsequent dissection of the worm I noticed some 

 minute white glands in the xviiith segment. Papillae, however, are 

 present upon certain of the anterior segments in the neighbourhood 

 of the spermathecal apertures. 



Upon each of segments vii. and viii. is a single circular disk occu- 

 pying the median ventral line of the segment and lying just in front 

 of the circle of setae belonging to the segment. 



Tlie gizzard lies in segments viii.-x., the mesenteries which should 

 divide those segments being absent. 



The usual pair of cceca are present. 



The oesophagus in segments x.— xiv. is much thickened and of 

 a whitish appearance. This region doubtless corresponds to the 

 calciferous glands of other Earthworms, which do not appear to be 

 developed as distinct pouches in the genus PerichtEta. 



