288 Mr. J. E. Gray’s Synopsis of 
1. Mithrodia spinulosa. Asterias clavigera, Lam. n. 29? Penta- 
dactylosaster reticulatus, Linck, t. 6. and 10. f. 16? Asterias reti- 
culata, Blainv. Man.? not Linn. nor Lam. Arms 5 times as long as 
the width of the body, with a series of large spines on each side. 
The series of spines next to those on the edge of the ambulacra 
are sometimes hatchet-shaped. 
e. The ambulacra with 2 or 3 series of equal equidistant filiform 
blunt spines on each side. 
52. Uniopuora, Gray. 
Body rather depressed ; rays broad, blunt; skeleton formed of 
series of transverse oblong ossicula, each bearing a large unequal 
sized subglobular articulated spine placed in longitudinal series ; 
dorsal wart convex, complicated. 
1. Uniophora globifera. Rays short, broad, rounded with glo- 
bular tubercles. 
Inhab. Van Diemen’s Land. Ronald Gunn, Esq. 
See also Asterias granifera, Lam. n. 24, 
Fam. 4. AsTERINID&, Gray, Syn. Mus. 62. 
Body discoidal or pyramidical, sharp-edged ; skeleton formed of 
flattish imbricate plates; dorsal wart single, rarely double. 
1. Paumrirss, Linck. 
Body flat, thin, nearly membranaceous ; margin radiately striated ; 
the dorsal ossicula with a radiating tuft, and the oral ones with a 
transverse line of many thin mobile spines; ambulacral spines in ob- 
lique rounded groups. 
1. Palmipes membranaceus, Linck, t.1.f.2.2. Ast. membranacea, 
Retz. and Lam. Ast. placenta, Pennant. Ast. cartilaginea, Fleming. 
Ast. rosacea, Lam. a broken specimen ?—Rays 5 broad. 
Inhab. British Ocean, Plymouth Sound. Mediterranean ? 
2. Palmipes Stokesii. Rays 15, acute. Mus. Mr. Stokes. 
See also Asterias pulvillus, Muller, Zool. Dan. t. 19. f. 1,2; Ast. 
eqguestris and Ast. militaris, Muller, of the North Sea; and Asf. 
Luna, Linnzeus, from India. All species I have not been able to see. 
2. Porania, Gray. 
Body pyramidical, thick, five-rayed, skin above and below var- 
nished, spineless ; dorsal ossicula irregular ; the margin with 2 series 
“of large ossicula, the lower ones produced sharp- edged, and each fur- 
nished on the edge with a series of mobile spines; the ambulacra 
with 2 series of mobile spines, each pair on a separate ossicule ; the 
upper marginal ossicula trigonal, imbricate; the dorsal ones un- 
equal, irregular, the central of the lower marginal ossicula with 4 
and the apical ones with a pair of spines.—Allied to Gymnasteria. 
Porania gibbosa. Asterias gibbosus, Leach, Brit. Mus. 1817. 
