Manchester Memoirs, Vol. xlviii. (1904), No. 15- 3 



eyes are considerably larger than those lying over 



the brain or about the anterior margin. (See Fig. i.) 



The dorsal epidermis contains large numbers of the 



" Schleimstabchen " which are characteristic of the genus. 



i\s in other species the walls of the prostate are strongly 



folded. 



LEPTOPLANID/E. 



Leptoplana AUSTRALIS, sp. n. 



" Port Phillip. Presented by Dr. R. v. Lendenfeld." 

 Six specimens. 



Dimensions of the largest specimen. Length about 

 30 mm. Breadth about 15 mm. 



The arrangement of the eye-spots is shown in the 

 accompanying text-figure (see Fig. 2). Colour a dark 



Fig. 2. 

 Leptoplana atistralis x 3. 



chocolate-brown, deepest on the margin, ventral surface 

 rather lighter, Two of the specimens have lost their 

 colour to a great extent. Penis armed with a long, nearly 

 straight stylet, about 2 mm. in length, directed backwards 

 and downwards. Prostate divided into some six or seven 

 longitudinal chambers. The lower part of the vagina is 

 modified to form a large muscular bursa copulatrix. One 

 of the specimens shows distinctly traces of nuchal tentacles. 

 I believe that Leptoplana alcinoi, an allied species, occa- 

 sionally exhibits a similar feature. 



Leptoplana drcebachensis. Oersted. 



Leptoplana droebacJieiisis., Lang ['84], Jensen ['78], 

 Gamble ['93]. 



