694 
At or greater than 
THE VOYAGE OF H.M.S. CHALLENGER. 
Occurrence in other 
Greatest 
Depth 
recorded 
| Zones. 
500 | 750 | 1000 | 1500 | 2000 | 2500 
PTERASTERIDE. 
PTERASTERIN EZ. 
Hymenaster pullatus ; . : oe | +. OTOL]: Heaeeere 
Hymenaster membranaceus 5 6 || oc ae | (ooe Dall eabane 
Hymenaster coccinatus , a 5 + fe WON yee cere 
Hymenaster prxcoquis . 3 . +] + 5a LG OOM AES AN Recetas 
Benthaster wyville-thomsont 5 ee Fo 2900 RIS Mier ears 
Benthaster penicillatus C + OTOU Fe ty Mitte 
PyTHONASTERIN 2. 
Pythonaster murrayt 3 5 etl aeatalecdss + UG}OO) || caaaae 
ECHINASTERIDA. 
EcHINASTERIN#. 
Cribrella oculata . ; 5 oF ees + 1350 | Also Littoral. 
Cribrella suflata . : . + 0 5205 act st 
ASTERIIDA. 
Asterias vesiculosa . sEatiliee. SOON i tesa 
Asterias (Hydrasterias) ophidion + L250 eee 
BRISINGIDE. 
Labidiaster annulatus + |... 800 | Also Littoral 
Brisinga verticillata . 6 +]. SSO Oe Washes 
Brisinga armillata wee ek IRS RO | Ss Sseeon 
Brisinga membranacea me + | + TGOOM I 2 ee RES es 
Brisinga discincta Sa e710) 010) seria 
Freyella pennata tes + SHON |e een eoeere 
Freyella polyenema . + ee 600 
Freyella echinata\ +) +) + PAGO cdacnie 
Freyella fragilissima 5 +e] + OTH a eee 
Freyella bracteata . , i + TS5OR I Passes 
Freyella dimorpha ore + AO OM i ri bees 
Freyella remex + PHENO  aepoce 
Freyella tuberculata . + 2400-2 Ta wanda 
Freyella benthophila. =f ZO OOM seer 
Freyella heroina 5 ARNO) I hance 
Freyella attenuata : é + P00) |] began 
Colpaster scutigerula 5 5 . - VD25 | MSA eee 
The above table comprises 109 species and varieties found in the Abyssal Zone. 
the Continental Zone, and 9 into the Littoral Zone. 
ZONE. UNKNOWN. 
Of these, 3 pass into 
The depth at which the following species collected by the Challenger were dredged is not recorded. Those 
marked with an asterisk have been found previously in the Littoral Zone. 
Pontaster venustus, var. robusta. 
Pseudarchaster tessellatus, 
Psilaster cassiope. 
Psilaster putagiatus, 
*Tuidia africana. 
* Pentagonaster semilunatus. ‘ 
* Pentagonaster astrologorum. 
Nymphaster albidus. 
* Pentaceros dorsatus. 
* Asterina folium.. 
*Linckia guildingit. 
* Narcissia canariensis. 
Narcissia trigonaria. 
* Asterias (Stolasterias) glacialis, 
