372 A. EF. Verrili—Marine Fauna of North America. 
also to the upper surface. Margin of disk without distinct 
spines, but with irregular rudimentary tubercles, covered by 
the skin. dambulacral spines forming an inner row, two, 
united by a basal web, on each plate, and an outer series 
arranged in oblique transverse groups of about three; these are 
shorter and covered by the skin, which is everywhere finely 
granulose. No interbrachial spines, except one or two rudi- 
mentary ones, close to the mouth. 
Two large and fine specimens of this species were taken on 
trawl-lines on the eastern slope of George’s Bank, in about 220 
fathoms, and presented by Capt. Anderson and the crew of the 
schooner Alice G. Wonson, August, 1878. 
Asterina pygmca, sp. nov. 
A small species, perbaps young, with a rather flattened pen- 
tagonal disk, with edges concave, and very short obtuse rays. 
Upper surface covered with small, sub-acute, stoutish spines on 
Cashe’s Ledge, Gulf of Maine, fifty-two to ninety fathoms. 
Dredged by Dr. Packard and Mr. Cooke on the “ Bache,” in 1878. 
Archaster Flore, sp. nov. 
Five rays; greater radii, 85 to 88™: smaller, 15 to 18™; 
breadth of arms at base, about 20™; in middle, about "5 
paxilligerous portion in middle, 7 to 9™, or about twice as wide 
as upper marginal plates. Disk moderately large, flat, with the 
central opening raised on a slight eminence. Arms elongated, 
flat above, regularly tapered to slender acute tips. Dorsal sur- 
face with the paxillze evenly and regularly arranged, mostly with 
