i4r)0 
THE VOVAGE of H.M.S. CHALLENGER. 
CoR.^LS : 
Stylaster gemmascens, M. -Edwards and 
Haime. 
„ sanguinevs, M. -Edwards and 
Haime. 
.\STER0IPF.A : 
Pycnopodia helianthoides (Brandt), 
Stimpson. 
CiRRIPEDIA : 
Acasta spongites (Poll). 
PolUcipes polymerus, Sowerby. 
Pycnogonida : 
Achelia laevis, Hodge. 
Pycnogonum litorale (Strom). 
The following 106 genera are represented in the Challenger collections by species 
taken only to the north and south of the tropics, and not in the intervening tropical 
zone, but 1 4 of these genera (marked thus *) are known from other sources to occur in 
the tropics : — 
1 )eep-Sea Ker.atosa : 
Ilolopsamma. 
.Monaxonida : 
* Tedania. 
Teiitorium. 
Hexactinellida : 
Aulocalyx, n.g. 
Bathydorus, n.g. 
Caulophacus, n.g. 
PoUopogon, n.g. 
.\lcyonaria ; 
* Syrnpodium. 
I’ennatulida ; 
■ Anthoptilum, n.g. 
Virg^daria. 
.\ctiniaria : 
Cerrus. 
Corticifera. 
Liponema, n.g. 
Paradis. 
Porponia, n.g. 
Sicyonis, n.g. 
Hvdroida : 
Halecium. 
Pensiphonia, n.g. 
Asteroidea : 
*Cribrella. 
^ Crossaster. 
Leptoptychaster. 
Pseudar chaster, n.g. 
* P ter aster. 
Solaster. 
Stichaster. 
Ophiuroidea : 
Ophiernus, n.g. 
Ophiocten. 
*Ophiomyces. 
Echinoiuea : 
Echinocardium. 
Spatangus. 
* Strongylocent rotus. 
Holothurioidea : 
Achlyonice, n.g. 
Ankyroderma. 
Elpidia. 
Euphronides, n.g. 
Kolga. 
Lsetmogone, n.g. 
*P solus. 
Trochostoma. 
Nemertea ; 
Pelagonemertes, n.g. 
Annelida : 
Amphicteis. 
Eupista, n.g. 
Eusyllis. 
Euthelepus, n.g. 
Evame. 
Lanassa. 
Lesena. 
Leanira. 
Lumbriconereis. 
Nicomache. 
