NO. 1608.] NEW SPECIES OF CRINOIDS—CLARK. / 211 
THatassoMerrip® (Thalassometra; Stylometra, Charitometra,; 
Pactlometra) ; West Indies and coast of Portugal southward to Cape 
Colony and the Crozet Islands, eastward to Australia, the Meangis 
Islands, the Galapagos Islands, Panama, and the Hawaiian Islands, 
and northward to Japan and the western Aleutian Islands; 52 to 1,600 
fathoms. 
Tropromerripm (Tropiometra; Ptilometra, Asterometra; Calo- 
metra); West Indies and coast of Brazil; Madeira south to Cape 
Colony; Red Sea and east Africa eastward to the South Sea Islands, 
northward to Japan, and southward to the southern coast of Aus- 
tralia; mainly littoral and sublittoral, but in the Caribbean Sea, 
extending down to 278 fathoms. 
ANTEDONID®, as restricted (Antedon,; Thysanometra,; Coccometra, 
Heliometra; Promachocrinus, Trichometra,; Adelometra,; Psathyro- 
metra; Zenometra; Hypalometra, Isometra; Bathymetra; Thauma- 
tometra; Hathrometra, Leptometra; Compsometra,; TIridometra; 
Nanometra, Erythrometra, Perometra) ; practically cosmopolitan ; 
littoral down to 2,900 fathoms. . 
Himeromerrp® (Oligometra, Cyllometra, Himerometra, Pon- 
tiometra) ; Caribbean Sea at Panama; East Africa and Madagascar 
eastward to the Marshall and Society islands, southward to New 
South Wales and northward to Japan; mainly littoral and sublittoral, 
but possibly extending down to 255 fathoms. 
ZYGOMETRIDE (Zygometra); northern Australia northward to 
Japan; sublittoral, and down to 152 fathoms. 
ComasrerIDEH (Comaster; Comatula); South Carolina and the 
Bay of Biscay, south to southern Brazil and Cape Colony; east 
Africa and Madagascar; eastward to the Society Islands and Peru, 
northward to Japan and southward to southern Australia; mainly 
littoral and sublittoral, but extending down to 830 fathoms in the 
Caribbean Sea. 
It must be emphasized that the collection undoubtedly represents 
but a very small fraction of the entire number of species inhabiting 
the area under consideration, but, on the other hand, it is probable 
that further investigation will not radically alter the general con- 
clusions. 
Crinoids were found only between 136 and 1,000 fathoms, 
although the investigations were carried on from the exposed reefs 
down to 2,629 fathoms. The following families were not represented : 
Thaumatocrinide, Himerometride, Tropiometride, Zygometride, 
and Comasteridee, while representatives of the families Atelecrinide, 
Thalassometridee, Kudiocrinide, and Antedonidee were secured. 
This is very significant, for the four families which, by their great 
abundance in the region from east Africa eastward to Oceania and 
northward to Japan (to which one of the families and seven of 
