13-JS 
THE VOYAGE OF H.M.S. CHALLENGER. 
Xotes OH the (ideographical Distnhntion . — An examination of the foregoing list shows 
that of the G31 species taken in this zone between 500 and 1000 fathoms, 356 species 
(or 56 per cent.) were taken south of the southern tropic, 282 species (or 45 per cent.) were 
taken witliin the tro})ics, and 164 species (or 26 per cent.) were taken north of the 
northern tropic ; while 30 species (or 5 per cent.) were found to be common to all those 
three an-as, 23 species (or 4 per cent.) were common to the southern and northern areas, 
57 species (or 1) per cent.) were common to the southern and tropical areas, and 32 
species (or 5 per cent.) were common to the tropical and northern areas. 
6. Antmals obtained in the dredgings and trawlings in depths 
BETWEEN 100 AND 500 FATHOMS. 
The Challenger dredged or trawled at 40 Stations where the depth was between 100 
ainl 500 fathoms, about 6000 specimens of invertebrates and fishes being procured, 
belonging to about 2050 species and about 865 genera. The total number of species and 
genera actually described and recorded in the Zoological Reports from the zone between 
these depths amounts to 1893 species and 776 genera, of which 1296 species (or 68 per 
cent.) and 168 genera (or 21 per cent.) are new to science, as shown in the following list. 
Those species taken by the Challenger in this zone only (numbering 1408 species, or 74 
|K-r cent.) are indicated by an asterisk thus.* The geographical distribution of the 
.sjxjcies is indicated by the heavy letters S, T, and N, used to denote that the species was 
taken .iouth of the tropic of Capricorn (S), between the tropics of Capricorn and Cancer 
('!’), or north of the tropic of Cancer (N.) 
Kkf{atu.sa: j 
Caeospungia intermedia, n..sp. T j 
,, b'vis, n.sp. T 
,, spinifera, n..sp. T 
StrlnHjHiugos longispintis (Fonbressin and 
Michelotti). T 
Vtnmgia tenuisxima, 1 1 vat t. T 
■ 
.Monax«»nida : 
ArtuiUn rri'cta (Carter). S 
rhah na inaiwhorfita, n.sp. S I 
* Desmacella annexa, Schmidt. T 
* Desmacidon fmticosa (Montagu). S 
,, (?) ramosa, n.sp. S 
EchinoelathHa carteri, n.sp. S 
* Esjwriopsis pulchella, n.sp. T 
* ,, symmeti'ica, n.sp. S 
* (jelliu.s (mgulatus (Bowerbank). N 
,, carduus, n.sp. S 
,, ,, var. magellanica, uov. 
* ,, glaeialis, n.sp. S 
* ,, ,, var. nivea, nov. 
