S42 
THE VOYAGE OF H.M.S. CHALLENGER. 
Station 2H. GASTEROPODA (Watson, Zool. pt. 42). 
Trochus (Marganta) stre 2 )to 2 )horus, n.sp. Obtained at no other locality. 
Pleurotoma (Sureula) dissimilis, n.sp. One specimen ; obtained at no other locality. 
Scc( 2 Jhandcr niveus, n.sp. One specimen ; obtained at no other locality. 
Cephalopoda (Hoyle, Zool. pt. 44). 
Cirrotexithis meangcDsis, n.sp. One specimen ; obtained also at Station 171. 
PoLYZOA (Busk, Zool. pt. 30). 
Bifaxaria Ixvis, n.g., n.sp. Obtained at no other locality. 
Fishes (Gunther, Zool. pt. 57). ' 
Macrunts villosus, n.sp. One specimen ; obtained also at Station 232, 345 fathoms. 
Bathygadns nndtijilis, n.g., n.sp. One specimen ; obtained at no other locality. 
Sterno 2 )tyx diaphana (Herm.). Six specimens; for distribution see Station 101. 
Xannohrachiiini nigrum, n.g., n.sp. One specimen ; obtained at no other locality. 
Only species of the genus. 
Omosudis lowii, n.g., n.sp. One specimen ; obtained at no other locality by the 
Challenger. Recorded from Madeira. Only species of the genus. 
Malacosteus indicus, n.sp. One specimen ; obtained at no other locality. Recorded 
subsequently from Indian Ocean (“ Investigator ”). 
Synrqdwhranchus pinnatus (Gronov.). Two specimens; for distribution see 
Station 125. 
In addition to the foregoing, the following are recorded in the Station-book : — 
Actinian on shell inhabited by Pagurus, several small urchins, Peltogaster in Ophiurid, 
Lrrnseonema, valve of Ilinnites, and seven much injured specimens of Coccia ovata (?). 
Excluding Protozoa, nearly 200 specimens of invertebrates and fishes were obtained 
at this Station, belonging to about 73 species, of which 59 are new to science, including 
representatives of 15 new genera ; 37 of the new species and 3 new genera were not 
obtained elsewhere. 
Willemocs-Suhm writes : “ The trawl brought up many Pentacrini, having as parasites 
(1) Lepadid and (2) Balanid external on the branches, and (3) Myzostoma in cysts of 
the arms, sometimes three together. Very likely the young Myzostoma bores itself 
in (how ?) and grows there, damaging the arms of the Pentacrinus so much that they 
break most easily at tlie jilace cho.sen by the parasite. Tlicsc parasitic forms probably 
never lead a free life, but discharge their eggs in.side the cyst, from which they escape 
