Farquhar.— On Netv Zealand Echinoderms. 207 



collected by him at Taylor's Mistake (Te Onepoto), a small, 

 open bay near Lyttelton, where they are not by any means 

 uncommon. They are not easily found, however, but need to 

 be carefully searched for at low water, as they hide them- 

 selves away between large boulders, or in the crevices and 

 under the projecting ledges of rock, and their colour corre- 

 sponds well with the dark-grey rock on which they live. Col- 

 lected by Mr. H. B. Kirk at Stewart Island. 



Type specimens are in the Canterbury Museum, Christ- 

 church. 



Tarsaster neozelanicus, sp. n. Plate XII., figs. 15-23. 



Eays 8, sometimes 7. E = 36mm. ; r = 5mm. Breadth 

 of a ray near the base, 4mm. or 5mm. 



Disc small, usuallv ovate, rather convex. Bavs narrow, 

 elongate, w 7 ell rounded above, almost cylindrical, tapering 

 very gradually from the base to the extremity. Interbrachial 

 arcs acute. Madreporiform plates very small, usually nu- 

 merous — 3 or 4 — situated nearer the edge of the disc than 

 the centre, surrounded by a wreath of spinelets. The plates 

 on the rays consist of a dorsal median series of rather large 

 plates, followed on either side by a series of intermediate 

 plates about the same size as those of the median series ; 

 there are sometimes two series of intermediate plates on the 

 basal part of the ray. These are succeeded by a series of 

 very large, broad, lateral plates. Between these lateral 

 plates and the adambulacral plates there is a single series of 

 rather large marginal plates, and sometimes a series of very 

 small intermediate plates, on the basal part of the ray, be- 

 tween the marginal plates and the adambulacral plates. The 

 armature of the abactinal and lateral plates consists of exceed- 

 ingly small, short, obtuse, subequal spinelets with granular 

 summits. On the plates of the median series there is either 

 an irregular group or an acutely angular line of from 3 to 8 

 spinelets, usually with a larger one situated in the middle. 

 On the intermediate plates there is a group of 2 or 3 spinelets. 

 On the large lateral plates there is a group or an oblique line 

 of 3 or 4 spinelets on the abactinal part of each plate and one 

 or two spinelets on the actinal margin. The plates of the 

 marginal series are armed with 2 or 3 rather long, blunt, 

 cylindrical or slightly oar-shaped spinelets, which form an 

 oblique line. The adambulacral plates bear two blunt, cylin- 

 drical spinelets, which form two regular divergent rows along 

 the edge of the ambulacral furrow. There is usually but one 

 large papula (sometimes a large one and a small one) to each 

 papular area ; the pores are large, arranged in regular longi- 

 tudinal rows. The pedicellarias on the abactinal and lateral 

 surfaces are very numerous, scattered, rather large, sessile, 



