l:]14 
THE VOYAGE OF H.M.S. CHALLENGER. 
Ilijmenoilora rmtraia (deep tow-net). 
Nematocarciu us j>roxi mat us. 
Peiueus i'eUitinus. 
Parnjxujunis atryssonim. 
Amussium cuneeUatum. 
Ervilia casfanea. 
Lima ir.ulticostata. 
Venus {ChameJita) mesodesma. 
Of the 277 species taken only in this 
species (or 74 per cent.) are new to scien 
represented by a single species), were taken 
lanfhina rotundata (surface). 
Mitmlana unnnaia. 
Pliiline quadrata. 
CateniceUa elegans. 
ScrupocpMana macandrei. , 
M agasella jlexuosa. 
Sternoptyx diapliana (surface). 
zone between 1000 and 1500 fathoms, 204 
:e, and the following 19 new genera (each 
only in this zone of depth : — 
Nauphanla. 
Periis. 
Aphroditopfer. 
Ophiambix. 
Ophiotrochus. 
Knyjmiastes. 
Euphronides. 
' Carinina. 
Crossophortts. 
Camacho. 
Onesimotdes. 
Ptatamon. 
Anuropus. 
Leiopus. 
Orphania. 
Paraxias. 
Stochasmus. 
Acanthonus. 
Aphyonus. 
Notes on the Geographical Distribution . — An examination of the foregoing list shows 
that of the 508 .species taken in this zone between 1000 and 1500 fathoms, 231 species 
(or 44 per cent.) were taken south of the southern tropic, 194 species (or 38 per cent.) 
were taken within the tropics, and 267 species (or 53 per cent.) .were taken north of the 
northern tropic ; while 38 species (or 8 per cent.) were found to be common to all those 
three areas, 29 species (or 6 per cent.) were common to the southern and northern areas, 
27 species (or 5 per cent.) were common to the southern and tropical areas, and 49 
species (or 10 per cent.) were common to the tropical and northern areas. 
5. Axi-Mals obtained in the Dredgings and Tra wrings in Depths between 500 
AND 1000 Fathoms. 
The Challenger dredged or trawled at 23 Stations where the depth was between 500 
and 1000 fathoms, about 2000 specimens of invertebrates and fi.shes being procured, 
l»elonging to about 710 species and about 425 genera. The total number of species and 
genera actually described and recorded in the Zoological Reports from the zone between 
these depths amounts to 631 species and 363 genera, of which 501 .species (or about 80 
per cent.) and 95 genera (or 26 per cent.) arc new to science, as shown in the following 
li.it. Tho.se species taken by the Challenger in this zone only (numbering 406 .species or 
64 per cent.) arc indicated by an asterisk tbus.* The geographical distribution of the 
.•'IKJcies is indif^ated by tlic heavy letters, S, T, and N, used to denote that the .species 
I 
