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4, CrDARIS SPINULOSA. 
Interambulacral tubercles small, very far apart; spines elongate, 
fusiform, red-brown, with close squamose longitudinal ridges and 
scattered subverticillate acute and small spines; the dorsal spines 
truncated, cupped and spinose at the end; ambulacral spinules 
narrow. 
Hab. 2 
Genus ASTROPYGA. 
5. ASTROPYGA DEPRESSA. 
Shell depressed, very thin; ambulacra swollen ; interambulacral 
area with a very wide smooth band in the middle and on each side 
of the upper part ; the lower part of the centre of each area with 
three oblique series of larger tubercles; ovarian plate broad, trian- 
gular. 
Hab. ? 
Genus GARELIA. 
Ambulacra broad ; the pairs of pores crowded, so as to form two, 
or rarely three, series ; ambulacral area narrow, upper part with four 
series of small, and lower part with two or four series of rather larger 
tubercles; spines of ambulacral area bristle-like, very slender ; in- 
terambulacral area with several oblique series of larger tubercles, 
without any smooth band on the back near the crown; ovarian 
plates moderate, triangular. 
* Ambulacra convex, area linear, spines elongate, subulate, hollow, 
covered with whorls of lanceolate scales. 
6. GARELIA #QUALIS. 
Ambulacra convex ; ambulacral area with two series of tubercles, 
the outer series rather the largest, rather narrowed below ; upper 
side of ambulacral area with 5:5 oblique series of larger tubercles ; 
ovarian plate elongate trigonal; spines purple, or purple and white 
ringed. 
Var. a. With spines pale, white-ringed. 
Var. (3. Spines purple; underside obscurely pale banded. 
Var. y. Spines purple, not banded. 
Hab. Mauritius. 
** Ambulacra flat ; area wide, with four or five series of spines, 
near vertex narrow, with two series of tubercles below ; spines 
subulate, tapering, longitudinally striated. 
7. GARELIA CLAVATA. 
Interambulacral area with four oblique series of larger tubercles ; 
ambulacra slightly raised ; the upper part of the area near the crown 
broad; each side with two or four or six series of small tubercles ; 
the lower part narrow, with a single series of rather larger tubercles. 
