144 «> 
THE VOYAGE OF H.M.S. CHALLENGER. 
south of the tropic of Capricorn, and those taken north of the tropic of Cancer. In the 
foregoing lists (pages 1277-1429), as previously stated, the letter T after a name 
indiciites that the species was taken within the tropics ; N in like manner indicates the 
northern, and S the southern great zone of latitude. An examination of these lists 
with reference to the animals occurring north and south of the tropics, but not 
within the tropics, brings out some interesting results. 
The following 91 species were taken by the Challenger to the South and North of 
the tropics, and not within the intervening tropical zone, but 11 of these species 
(marked thus *) are recorded from other 
tropics : — 
Kkkatosa : 
PsammojDemma densmn, Marshall. 
Monaxonida : 
* IlaUchondria panicea, Johnston. 
*Tedania digitata (Schmidt). 
Tentorium semisuherites (Schmidt). 
Hkxactinellida : 
Aulocalyx irregidaris, n.g., n.sp. 
Chonelasma lamella, n.g., n.sp. 
Actiniaria : 
Cereus spinosus, n.sp. 
Liponema multiporum, n.g., n.sp. 
Corals : 
Caryophyllia communis (Seguenza). 
Cladocora arhuscula, M. -Edwards and 
Haime. 
Flahcllum apertum, n.sp. 
IIydroida : 
Ilalecium heanii, Johnston. 
Perisiphonia filicula, n.g., n.sp. 
Crikoidka ; 
Antedon ahyssicola, n.sp. 
.Astkroidka : 
IhjtasU-r exilis, n.g., n.sp. 
PontasU r forcipatus, n.g., n.sp. 
sources as having been obtained within the 
Ophiuroidea : 
Ophiacantha rosea, n.sp. 
Ophiernus vallincola, n.g,, n.sp. 
Ophiocten hastatum, n.sp. 
Ophioglypha hullata, n.sp, 
,, confragosa, n.sp. 
Echinoidea : 
* Echinocardium australe, Gray. 
Echinus norvegicus, Diiben and Koren. 
Phormosoma hoplacantha, n.sp. 
*Schizaster fragilis (Diiben and Koren). 
Holothurioidea : 
Euphronides depressa, n.g., n.sp. 
Holothuria lactea, n.sp. 
„ thomsoni, n.sp, 
Kolga nana, n.sp. 
Lastmogone wyville-thomsoni, n.g., n.sp. 
Psolus operculatus, Pourtales. 
Trochostoma albicans, n.sp. 
Nemertea : 
Cerehratulus macroren, n.sp. 
Pelagonemertes rollestoni, n.g., n.sp. 
Annelida : 
Eunice oerstedi, Stimpson, 
,, vittata, Delle Chiaje. 
Eupista damvini, n.g., n.sp. 
Placostegus ornatus, Sowerby. 
Terehellides strcemi, Sars, 
