lO Laidlaw, Marine Tjirbellaria from Torres Straits. 



Family PSEUDOCERIDyE. 

 PSEUDOCEROS REGALIS, Haddon (in MS.), sp. n. 

 A single specimen from Mer Reef, January 8th, 1889. 

 Length about ----- 17 mm, 



Breadth „ 11,, 



Mouth opening from anterior margin - 6 „ 

 $ aperture behind mouth - - - r5 „ 

 $ „ „ c? - - - I „ 



Sucker behind ? aperture- - - r5 „ 

 Brain-eyes from anterior margin - - i "5 „ 

 Colour a rich brick-red, becoming intense toward the 

 margin, which is lined with a very fine black line. As in 

 the following species, the tentacles are small, and the eye- 

 spots difficult to distinguish owing to the dense pig- 

 mentation. The cluster of brain-eyes is very small. 

 Colour of the under surface dull yellow. Penis single. 

 Evidently somewhat closely allied to Ps. kentii, von 

 Graff [8]. 



PSEUDOCEROS HADDONI, Sp. 11. 

 Planaria nigrocincta, Haddon, in MS. (nom. preocc.) 



One specimen, immature, Mer Reef, January 12th, 1889. 

 Length about - - - - - 17 mm. 

 Breadth „- - - - -12,, 

 Mouth opening from anterior margin 5 „ 

 Sucker from mouth - - - 4 „ 



The marginal band is about I'S mm. deep. 

 Colour dull orange-yellow, with a fairly broad marginal 

 band running completely round the body, black. This 

 black band is edged on its outer side by a very narrow 

 yellow border. Tentacles small ; brain-eyes few, in a 

 minute circular cluster ; pharynx large, much folded. 



In addition to the foregoing species, Prof. Haddon 



