PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 337 



(Eastorn Mexico), Panama, Bogota, and Eastern Pern, I am unable to 

 detect differences other than what apj>ear to be chiefly of an individual 

 '"haracter, though there is much variation both in size aad colors among 

 the different specimens. 



DESCRIPTBOi'V OF A 1VE\%^ Fff.Y-CATCIIKR AIVIW A SUPPOSTD NEW 

 PETCiEli FBOM TBiE SA1VI>\VJ€EI ISI^AiVUS. 



By ROBEIRT RIDG^ AY. 



Chasiempis sclateri, sp. no v. 



Sp. ch. — Above dull ferruginous, more umber on the back, more ru- 

 fescent on the rump and upper tail coverts ; sides of head and neck, 

 cliiu, throat, and breast bright ochraceous-rufous ; rest of lower parts 

 pure white, the sides tinged with rufous ; wings and tail dusky, the 

 middle and greater coverts tipped with pale ferruginous, producing two 

 distinct bands; secondaries edged with pale dull rusty ; inner Avcbs of 

 rectrices (except middle pair) tipped with white, this about .40 of an 

 inch wide on the lateral pair and decreasing in extent towar<l the inner 

 feathers. Wing, 1».70; tail, 2.70-LM5 ; tarsus, .95-1.(10; middle toe,'.4r). 



Types, Nos. 41955 and 41956, coll. U. S. Xat. Mus., A\ aimeu Kaui, 

 Sandwich Islands ; Y. Knudsen. 



Although I have been unable to compare the specimens described 

 above with either C. sandtciclieyms (Gm.) or C. dimidiata (Haiti. & 

 linsch), I am satisfied, from reference to the descriptions of these in 

 Sharj)e's catalogue of the Musdcapkke ("Catalogue of the Binls in 

 the British Museum," vol. iv), pp. 231-233, that it is quite distinct spe- 

 cifically. The former is described as having the "wing-coverts black, 

 tipped with white sjiots," the " under wing-coverts white," the cheeks 

 and throat white, the tail only 2.15 inches in length, and the tarsus only 

 .So long ; while the latter is still more different both in jjroportions and 

 colorations. 



Cymochcrea cryptoleucura, sp. no v. 



Sp. ch. — Adult: Uniform fuliginous, the head and upper surface more 

 slaty, the greater wing coverts and outer webs of tertials paler, inclin- 

 ing to dull ash-gray; remiges and rectrices dull black, the latter (except 

 mid<lle paii) white at the base; u})per tail-coverts white, the longer 

 feathers broudty tipped with hlachinh (as in Frocellaria pclogica); anal 

 region mixed with white, and white of the up])er coverts extending 

 laterally to the sides of the crissum. Tail (mly slightly forked or emar- 

 ginated, the outer feathers being only about .20-30 of an inch longer 

 than the middle i>air. Bill, legs, and feet (including webs) deep black; 

 wing, 5.S0-G.30 ; tail, 3.00-3.15 ; bill (measured in straight line fi om base 

 of (ndmen to point of the maxilla), .00; tarsus, .85-90; middle toe, with 

 claw, .85-.90. 



Proc. Nat. Mus. 81 22 JUarch 29, 1883. 



