702 THE VOYAGE OF H.M.S, CHALLENGER. 
C.—NATURE OF THE SEA-BOTTOM 
On which the Asteroidea collected by the Challenger were found, with an enumeration of 
the Species occurring on each deposit. 
I. TERRIGENOUS DEPOSITS. 
a. GRAVEL, STONES. 
BATHYMETRICAL ZONE. 
Occurrence on other Deposits. 
Littoral, | Continental, | Abyssal. 
ARCHASTERIDA. 
PARARCHASTERIN &. 
Pontaster hebitus . ‘ 5 : + wee oie aidelacs 
PsEUDARCHASTERIN &. 
Pseudarchaster intermedius. F + ees cade Pe Metres 
ASTROPECTINIDA. 
ASTROPECTININE. 
Leptoptychaster arcticus, var. elongata + ae aa Also Blue mud. 
PENTAGONASTERID. 
PENTAGONASTERINAE. 
Pentagonaster granularis . . : + sed sel A (NO aR 
ANTHENEIDA. 
Hippasteria plana . - . . + 
STICHASTERIDA. 
Stichaster albulus . : ; + ate Sex ee- MWe omen 
PTERASTERIDA. 
PTERASTERINE. 
Pteraster militaris . F 5 + ee Seco MEI a UMD BU Moes oso 
ECHINASTERID. 
ECHINASTERIN®. 
Cribrella oculata . A : F + AeA AX Also Rock and Blue mud. 
ASTERIIDA. 
Asterias (Leptasterias) compta . : + ts 205 Ae ek scchco 
b. CoaRSE GRAVEL. 
BATHYMETRICAL ZONE. 
Occurrence on other Deposits, 
Littoral. | Continental. | Abyssal. 
PENTAGONASTERIDE. 
PENTAGONASTERINZ. 
Gnathaster meridionalis . : 2 + ae es Also Voleanic mud and 
Gnathaster elongatus : 3 + \ Greenish Volcanic mud. 
GYMNASTERID. 
epic ariculata } mn a Hi { Also ae mud and Volcanic 
mud, 
