A new owl from Costa Rica

VOL._XVIII, PP.

217-218 OCTOBER

_17, 1905

PROCEEDINGS

OFTHE

BIOLOGICAL SOCIETY OF WASHINGTON

A NEW OWL FROM COSTA RICA.

BY ANASTASIO ALFARO,

Director of the Costa Rican NationalMuseum.

Cryptoglaux ridgwayi

sp.nov.

Type from

La

CandelariaMountains, nearEscasu, Costa^Rica. No.149,709, U.S.National

Museum. March

29, 1903. Presented

by

^{AnastasioAlfaro.}

Young

^{male. Similarto}the corresponding stage of^C.acadicusbutlatero- frontal region

and

_generalcolorofunderwing-coverts

wood brown

instead of white,

and

without

any

^{white on}outer surface ofwings ^oron_tail,

and

toes unfeathered (except ^basal halfof the _outer).

Above

_plain

warm

sepia brown,^or between_sepia

and

pealbrown,inclining

on

hindneck to

Vandyke

^or

mummy

^{brown, the tail darker} (between ^clove

brown and

seal brown),^the remiges grayer

brown

_{(between sepia}

and

hairbrown), narrowlyedged withpaler; notraceofwhite markings on^{outersurfaceof} wings, except anarrow edging ^tooutermost feather of_alula,nor ontail

;

but inner

webs

of innermost secondaries with _{irregular spots} of dull whitish near the margins; latero-frental region

wood brown

_; anterior portion of suborbital region similarbut rather_paler,deepening

on

auri cular region ^intodark

brown

(ratherdarkerthancolorofpileum)^: bristly feathersofloral region blackish; throat deep brown,^like pileum,with a

band

of dull buffy whitish immediately below; ^rest of underparts plain cinnamon-buff_{or claycolor,}deeper anteriorly,

where

_passing into russet on sides of _breast,decidedly paler

on

_legs

and

undertail-coverts; under wing-coverts

wood

_brown,tinged with deeper brown,especiallyon under primary^-coverts; under surface of remiges plain deep ^hair brown, the innermostsecondarieswithirregular dullwhitish_spotstoward edge^{of inner}

web

; billblackish_; toes(except^basal half of the_outer) naked, light col ored;clawsdarkhorn_{color; length(skin),}185;wing, 143;tail,64;

culmen

(from anterioredge^ofcere), 13; tarsus,25_; middle_{toe, 20.}

High

^mountainsof Costa Rica (CerrodelaCandelaria, near Escasu).

I

name

this small owl in honor of Professor Robert Ridgway, ^as a

"souvenir"ofhisrecent explorationsⁱⁿCosta Rica.

42 PROC. BIOL.Soc. WASH.,VOL. XVIII,1905. (217)