186 
but specimens from Zanzibar and Mauritius examined have all 
== 
= 
been entirely violet, while those from the East Indies are a 
entirely white. 
Family Thalassometridæ. 
Sub-family 7'halassometrinæ. 
Genus Stenometra A. H. Clark. 
Stenometra 1909. A.H.Clark, Proc. Biol. Soc. Washington, Vol. 22, p. 14. 
Stenometra dorsata sp. nov. 
Thalassometra quinquecostata 1908. A. H. Clark, Proc. U. S. Nat. Mus. 
Vol. 34, p. 310. 
Stenometra conifera 1909. A. H. Clark, Proc. Biol. Soc. Washington, 
Vol 22 115: 
Eastern Sea, near Nagasaki;32922' N.lat., 1289242" 
E. long.; 170 fathoms; Suensson, November 23, 1901. 
Two specimens, agreeing with others from the same general locality 
in the United States National Museum collection. The arms are 
about 80 mm. long, nineteen in one specimen, twenty in the other; 
the cirri are 45 mm. to 50 mm. long, with about seventy joints. 
Though somewhat broken, both specimens are remarkably well 
preserved for such a brittle species. 
"Hastern Asia”; Suensson, July 29, 1900. … One 
smaller specimen with twenty arms. 
Il at first considered this species the same as the earlier 
quinquecostata of Carpenter; but it is certainly true that the 
number of cirrus joints in Japanese specimens is considerably less 
than in those from the Ki Islands, and, as this appears to be per- 
fectly constant, there seems to be no doubt that I was in error, 
and that the two are in reality perfectly distinet. This form ap- 
peared to me to be covered by the name conifera of Hartlaub; but 
a personal examination of the unique type of that species, which 
is in the Berlin Museum, showed me that conifera is in reality a 
species of Cosmiometra, allied to C. crassicirra of Hawaii. 
