100 PROF. A. DENDY AND MR. E. HINDLE : ADDITIONS TO 



localities. It appears to be by far the most common Holothurian occurring 

 in the New Zealand area. The examples that we possess were obtained 

 from the following localities: — Waitangi, Chatham Islands (collected by 

 Prof. H. B. Kirk) ; Ouenga, Chatham Islands (collected by one of ourselves) ; 

 Akaroa Harbour (collected by Mr. Henry Suter) ; Great Barrier Island 

 (collected by Mr. Chas. Cooper) ; Stewart Island (collected by Prof. 

 H. B. Kirk). 



The examples from Ouenga were found living underneath stones on the 

 beach between tide-marks. They were clinging to the stones with the aid 

 of their tube-feet. 



The specimens vary in size from 0'85 cm. by O'S cm. up to as much as 

 2-4 cms. by I'l cms. There is a very marked difference in appearance between 

 the large specimens and the small ones, the large possessing a much darker 

 and rougher integument than the small animals. This latter feature is 

 probably due to the fact that the large calcareous nodules, which are common 

 in the integument of the large ones, only occur very sparingly in the small 

 specimens. 



This difference is at first sight so marked that it was thought necessary to 

 erect a new species (C. calcarea) for the reception of the small specimens ; 

 but after subsequent examination we consider that there is not sufficient 

 justification for this course. We therefore concur with Ludwig in including 

 C. calcarea under C. brevidentis. 



We also agree with Perrier in referring this species to the genus Cucu- 

 maria, though we must admit that the distinction between these two genera, 

 Cucumaria and Colochirus, appears to us to be not very satisfactorily defined. 



This species has also been recorded, by Ludwig, from Juan Fernandez, on 

 the other side of the Pacific Ocean — a very interesting case of agreement 

 between the marine fauna of New Zealand and that of South America. 



Cucumaria ocnoides, Dendy, sp. 



1897. Colochirus ocnoides, Dendy, Journ. Linn. Soc, Zool. vol. xxvi. p. 36. 



1898. Cucumaria ocnoides, Ludwig, Hamburg. Magalhaen. Sammelreise, Holotliurien, 



p. 30. 

 1901. Ludwigia ocnoides, Reiften, Zeitsch. f. wissencb.. Zool. vol. Ixix. p. 598. 



1904. Cucumaria ocnoides, R. Perrier, Bull. Mus. d'PIist. Nat. vol, x. p. 13. 



1905. Cucumaria ocnoides, R. Perrier, Ann. Sc. Nat., Zool. 9^ ser. i. (1905) p. 96. 



There are in the collection six examples of this remarkable Holothurian 

 from New Brighton, near Christchurch. They vary in length from 8'5 cms. 

 up to 14 cms. In the larger specimens the tube-feet are entirely restricted 

 to the three ventral radii, where they are arranged in four somewhat irregular 

 longitudinal rows along each radius. In the specimens before us the dorsal 

 surface exhibits neither tube-feet nor papillae. 



The integument of the middle of the body seems to have the power of 



