372 THE VOYAGE OF H.M.S. CHALLENGER. 
Chorology of the Genus Lasiaster. 
a. Geographical distribution :— 
ArLantic : Two species between the parallels of 58° and 75° N. 
Lasiaster hispidus, off the Lofoten Islands, and between Spitz- 
bergen and the Scandinavian Coast. Lasvaster villosus, from the 
Faerde Channel. 
8. Bathymetrical range: 107 to 542 fathoms. 
Lasiaster hispidus does not extend below the Continental zone ; whereas 
Lasiaster villosus has only been found in the Abyssal zone, at least so far 
as at present known. 
y. Nature of the Sea-bottom: Lasiaster hispidus was dredged on Greenish clay, 
Stones, and Clay, during the Norwegian North Atlantic Expedition. The 
nature of the ground inhabited by Lasiaster villosus is not recorded. 
Chorological Synopsis of the Species. 
| Ocean, Range in Fathoms. Nature of the Sea-bottom. 
Lasiaster hispidus . 5 Atlantic. 107 to 300 Greenish Clay, Stones and Clay. 
Lasiaster villosus . ‘ Atlantic. 542 
1. Lasiaster villosus, n. sp. (Pl. LVIII. figs. 7-10). 
Rays five R= 105 mm.; r=6mm. R=175,r. Breadth of a ray between the 
first and second infero-marginal plates, 5°25 mm. 
Marginal contour stellato-pentagonal. Rays broad at the base and tapering gradually 
to the extremity, the interbrachial arcs being subacute. Abactinal area subplane or very 
slightly convex, with a faint indication of carination along the median radial line. Actinal 
area plane or slightly convex, the latter character probably dependent on the posture of 
the rays. Margin rather thick. 
The abactinal area is covered with small subcircular or oval plates imbedded in 
membrane, on which are borne numerous small, cylindrical, equal, cilia-like spinelets, 
which have the appearance superficially of being indistinctly separated into confluent 
groups or tufts. Large, single, isolated papulz are distributed at wide intervals apart 
over the area. There is a distinct narrow channel along each median interradial line. 
