SEA LILIES, STARFISHES, ETC.—CLARK. 111 
Genus PARECHINUS, Mortensen. 
PARECHINUS NOTIUS,! sp. nov. 
(Plate xli., fig. 1-3.) 
Test 28 mm. h.d. and 18 v.d.; height, therefore, is .64 h.d. 
Coronal plates thick, rough, though not actually sculptured, 
20 in a column, each with a primary tubercle whose areola is. 
about half the height of the plate (in midzone) and on each 
side of which are two secondary tubercles, not much smaller 
than primary; the 5 tubercles form a horizontal series ; 
above midzone on a few plates the secondary tubercles are 
somewhat more numerous and less regularly arranged, but 
the uppermost 4 or 5 plates have only 3, 2, 1 or 0; inter- 
ambulacra about 12 mm. broad at ambitus. Ambulacral 
plates 22, but little lower than the interambulacral, each 
(in midzone) with a primary and | large secondary tubercle ; 
the latter is near the inner end of the plate and disappears 
abactinally ; ambulacra 7 mm. wide at ambitus ; poriferous 
zones narrow (1 mm. wide), the arcs of pores vertical. 
Abactinal system small and compact, 7.5 mm. across; all 
oculars exsert but I nearly in ; anal system large (4 mm. across) 
nearly circular, covered by numerous (about 30) plates, 
among which the nearly circular suranal is very distinct and 
much the largest ; each genital plate carries 3 or 4 secondary 
tubercles, each ocular, 1. Actinostome rather large, 11 mm. 
across ; gill slits very slightly indicated ; buccal membrane 
thin and perfectly bare, except for the 5 pairs of primordial 
ambulacral plates, which are very near the mouth, but do not 
form a closed ring; they are densely covered with ophi- 
cephalous pedicellariz. Primary spines 7-8 mm. long, abruptly 
and not sharply pointed, each with about 10 longitudinal 
ridges, low, rounded and close together ; secondary spines 
similar but not so long and often somewhat swollen at tip ; 
miliary spines very few, most of the relatively few miliary 
tubercles bearing pedicellariz. Globiferous pedicellariz fairly 
common, very similar to those found on the New Zealand 
form (albocinctus) of P. magellanicus ; the blade is narrow, 
slightly widened near tip, with a long and conspicuous end- 
tooth and a smaller and more slender tooth on the left side, 
below tip ; base of valve wider than in Mortensen’s figure of 
P. albocinctus ; tridentate pedicellariz very rare or wanting, 
for I failed to find one; ophicephalous pedicellarie very 
abundant ; the valves are broadly rounded at tip and not at 
all constricted. Colour of test, very pale brown; spines 
white. 
l. vottos=southern; in reference to its geographical position. 
