BIOLOGICAL SOCIETY OF WASHINGTON. 



Of C. superciliosa (vera), the Museum possesses specimens from 

 Demerara, Trinidad, Isthmus of Panama, and Costa Rica. These 

 all have the outer webs of the secondaries either entirely im 

 maculate, or else marked with very minute specks of dull fulvous. 

 These markings are wanting in the two Demerara examples, are 

 barely indicated in two from the isthmus, and are rather distinct 

 (though still deep fulvous in color) in the one from Costa Rica 

 rendering it, therefore, probable that specimens from intermediate 

 points might complete the transition from one to the other. It 

 should be remarked, however, that the Costa Rican example (No. 

 64,666) is much more like South American skins than those from 

 Yucatan, upon which the new race (possibly species) is based. 



Types, Nos. 39,297, $ , and 39,206, 9, Sisal, Yucatan, May, 

 1865; Dr. A. Schott. 



NOTE ON PSALTRIPARUS GRINDS, BELDING. 

 BY ROBERT RIDGWAY. 



(Read February 23, 1884.) 



In my description of this species, on p. 155, vol. 6, of the Pro 

 ceedings of the United States National Museum, I inadvertently 

 made an erroneous comparison between this species and P. me 

 lanotis, as follows : "From the latter [P. plumbeus} it differs in 

 much whiter throat and decidedly clearer, more bluish, shade of the 

 upper parts, in both of which respects there is a close resemblance 

 to P. melanotis. ' ' I wrote from memory, not having a specimen 

 of P. melanotis before me at the time. Upon actual comparison I 

 now find that while the statement is essentially correct so far as the 

 coloration of the lower parts is concerned, I was greatly in error re 

 garding the coloration of the upper parts. The difference is very 

 great, P. melanotis having the pileum and nape fine light plumbe 

 ous-gray, exactly like the back of P. grinda, while the back, etc. , 

 are bright brownish drab, much like the pileum and nape of P. 

 grinda, only more olivaceous. The relative position of the two 

 colors is, in fact, exactly reversed in the two species. 



