On attaching (c Authorities ” to Scientific Names. 347 
Holoquiscalus caymanensis (Cory). 
Quiscalus caymanensis Cory, Auk, iii. pp. 499-502; Ridgw. 
Proc. U.S. Nat. Mus. 1887, p. 574. 
Holoquiscalus caymanensis Ridgw. Proc. Wash. Ac. Sci. 
iii. p. 151 (1901). 
Three males and two females. 
This is a smaller bird than H. gundlachi, which is found in 
Cuba, and the contour-feathers in the male exhibit a bluish 
or violet-blue gloss as compared with a more purely violet 
gloss in Cuban birds. The quill-feathers have a beautiful 
bluish purple sheen, while the wing-coverts are shiny bluish 
green. 
Female (previously undescribed). Similar to the male, 
but distinctly smaller and duller and lacking the rich bluish 
purple gloss; the black of the upper parts has a greenish 
hue, while the lower parts have a dull brownish tint, with 
hardly any gloss. 
Female examples of this genus which hail from the 
Greater Antillean Islands do not exhibit the brown coloration 
which obtains in those from the Lesser Antilles and further 
south. 
I append measurements of four males and two females. 
Wing. 
Tail. 
Exposed 
culmen. 
Tarsus. 
mm. 
mm. 
mm. 
mm. 
Ad. <J . 
. . 133 
115 
29 
32 
Ad. . 
. . 133 
115 
29 
32 
Ad. S . 
. . 133 
114 
32 
35 
Ad. $ . 
. . 136 
113 
32 
35 
Ad. 2 . 
. . 119 
100 
25 
29 
Ad. ? . 
. . 114 
101 
25 
29 
XIV. —Remarks on the Practice of attaching “ Authorities” 
to the Scientific Names of Animals. By P. L. Sc later, 
D.Sc., F.R.S. 
Linn^us, as we all know, was the founder of the Binomial 
System of nomenclature for animals and plants. Before his 
time authors had invented a Genera,” but had generally 
