708 



MR. F. F. LAIDLAAY ON THE POLYCLAD 



[June 19, 



Leptoplana pallida (Quatrefages), 



Leptoplana pallida Lang [1884J pp. 459-492, Taf. iv. figs. 2-3. 



One specimen " from a bucketful of the incrustations of rocks 

 exposed to surf." Port Sal Rei, Boa Vista Is. (W. 9.) 



The specimen is about 15 mm. long and has the uteri crowded 

 with eggs. 



Leptoplaxa graffii, sp. n. (Text-fig. 111.) 



" Found amongst nodules of nullipores dredged in from 5-10 

 fathoms. Ribbon-like and a strong swimmer. Light colour, only a 

 broad sandy longitudinal mark centrally and ramifying lines. 

 Contracted on killing." (3.) 



Text-fio-. 111. 



Leptojilana graffii. X 5. 



This species, represented by a single specimen, has a body 

 relatively longer and narrower than is found in any other 

 Leptoplana. 



Length 25 mm. 



Breadth 3*5 mm. 



Brain 3 mm. behind the anterior margin. 



Buccal opening 8 mm. behind the brain. 



(S aperture 6 mm. behind the buccal opening. 



