190 ME. H. FAEQUHAE ON" NEW ZEALAISTD ECHIKODEEMS. 



arm-plates are squarish, with rounded angles. The upper arm- 

 plates are oval, broader thiau long. The side arm-plates bear 

 four blunt, stout, somewhat flattened, subequal arm-spines, about 

 3 mm. in length. There are two small leaf-like tentacle-scales to 

 each pore. The colour of the disc is greyish, brown, and the rays 

 are blackish, grey above, slightly variegated with yellowish and 

 lighter grey beneath. 



This form may be readily distinguished from all the other 

 species of the genus OpMopeza by the small number of arm- 

 spines (4) and their large size. One specimen of this species 

 was found by Mr. Danby at Eaoul Island, 



The diagnosis of the genus OpJiiopeza, as defined by Lyman 

 (' Challenger ' Eeport, vol. v. p. 30), will have to be slightly 

 modified to admit this species. 



Ophiopeza ctlikdeica, Hutton. (Plate 14. figs. 4, 5.) 

 The disc is subpentagonal, with slight indentations at the 

 bases of the arms. The arms are short, about three or three and 

 a half times the diameter of the disc ; they taper evenly to a fine 

 extremity. There are sis or seven mouth-papillae on eacla side of 

 the mouth-angle, the outermost one is small and narrow, the 

 next large and broad ; then follow three or four small, rounded, 

 bluntly-pointed ones, and the pair at the apex are somew^hat 

 longer and sometimes broader than these. The mouth-shields 

 are rather large and shield-shaped. The side mouth-shields are 

 small and narrow. The under arm-plates are slightly longer than 

 broad, convex without. The upper arm-plates are oblong, with 

 rounded angles broader than long. The side arm-plates bear six 

 or seven short, blunt, compressed arm-spines. There are two 

 leaf-like tentacle-scales to each pore, the outer one smaller than 

 the other. The colour of this species varies very much ; some 

 specimens are dark grey, the disc slightly variegated or spotted, 

 and the rays banded with white or pale grey ; others are yellowish 

 white variegated with grey, or the rays banded and the disc 

 variegated wdth bright reddish brown. 



Pectinuea mactjlata, Verrill. 



This species seems to be distributed all round the New Zealand 

 coasts. Mr. H. B. Kirk informs me that it is abundant at 

 Stewart Island, on the sandy bottoms of the inlets and sheltered 

 coves. Mr. Lukins has sent me a specimen which he found at 



