1906.] POLYCLAD TURBELLARIA OF THE CAPE VERDE ISLANDS. 705 



is very interesting. I do not know of any other fresliAvater 

 Oorophiiclfe. 



I S O P O D A. 



Pakanthura nigeo-punctata (Lucas). 



Paranthura costcma Thomson, Trans. IST. Z. Inst. xiv. p. 230 ; 

 Index Faunae N. Z. p. 262. 



Paranthura nigro-punctata Stebbing & Norman, Trans. Zool. 

 Soc. xii. p. 129, pi. xxvi. fig. 11. 



A small specimen, about 6 mm. long, from "VVaikare Lake, taken 

 at a depth of 5 feet, must, I think, be referred to the species found 

 on the New Zealand coast, which was long ago identified with this 

 European species by Mr. Thomson. The specimen is immature, 

 the seventh segment of the pereion being small and lacking 

 appendages. It possesses large distinct black eyes, the colour is 

 pale yellow with markings of black on the back, and it is evidently 

 a surface form. Another specimen from the same locality was 

 dissected and drawn by Dr. Brady, who kindly sent me the 

 drawings he had made. 



So far as I am aware, this is the only freshwater species of the 

 Anthuridse known, with the exception of the subterranean form 

 Cruregens fontanus from the underground waters of the Canter- 

 bury Plains, and it is of especial interest for this reason, though it 

 is quite distinct from Cruregens fontamis. 



The species to which I have referred it, Paranthura nigro- 

 punctata, was first taken by Mr. Thomson among some seaweed 

 washed up on the beach near the mouth of the Taieri River ; I 

 have several specimens taken at different localities on the East 

 Coast of Canterbury, which agree closely with the description and 

 figures given by Stebbing and ISTorman. 



6. On the Marine Fauna o£ the Cape Verde Islands, from Col- 

 lections made in 1904 by Mr. C. Crossland. — The Polyclad 

 Turbellaria. By F. F. Laidlaw, M.A. Cantab. 



[Received June 8, 1906.] 



(Plate LIL* and Text-figures 111-113.) 



Contents. 



i. Introduction : p. 705. 



ii. Notes on the Specimens in Mr. Crossland's Collection : p. 706. 

 iii. Literature : p. 718. 



i. Introduction. 



The collection of Polyclads made by Mr. Crossland is of interest 

 not only on account of the hitherto uadescribed species represented 

 in it, but also because it is the first collection which makes it 



* For esfjlanatiou of the' Plate, see p. 719. 



47* 



