BY E. J. GODDARD. 323 



middle of its length, tapering towards the anterior and posterior 

 -ends. The anterior extremity is slightly wider than the " neck " 

 in the preserved specimens, but this may be due to contraction. 



The length of adult individuals when fully extended is about 

 15mm,; in a state of contraction about 10mm. The width in 

 the middle region of the body is about 5 mm. 



The body in a state of contraction is concavo-convex in section. 

 The surface is rough and devoid of papillae when viewed macro- 

 scopically. In section, however, the skin is seen to be covered 

 by a large number of papillae due to outpushings of the cuticle 

 with the underlying epidermis and subepidermis. 



I am not in a position to say whether these papillae are inner- 

 vated or not, or whether they are of any segmental significance 

 in connection with somite-limits. 



Unfortunately as I have been unable to procure living specimens 

 I cannot make any detailed remarks concerning the colour and 

 pattern-ornamentation of the species. The preserved specimens 

 were of a flesh colour, and Dr. Hill informed me that they differed 

 in no way from the living specimens as regards colouration. 

 The body is quite opaque, and this feature prevented me in the 

 first place from regarding the species as Glossiphonia heteroclita, 

 which it closely resembles in other features, unique among which 

 is that of closely approximated genital apertures which in G. 

 heteroclita are said to be actually united. 



The annuli are distinct and well marked off from one another. 

 The total number is seventy, sixty-three of them lying behind 

 the anterior sucker. The annuli are of greatest extent in the 

 middle region of the body, gradually diminishing in size as they 

 approach the anterior and posterior regions of the body. 



As in all species of Glossiphonia, the total number of somites 

 is thirty-four. This I have determined in the species under 

 description by making a count of the number of nerve-capsules 

 The first, second, and third somites are uniannulate, the fourth 

 biannulate, and most of the others triannulate. 



Eyes six in number; the first pair, which are situated on the 

 second annulus, being much smaller and closer together than the 



