gohelocoma •unicolor unicolor (Du Bus) 



Cyanocorax unicolor Du Bus TYPE 



Bull. Acad. Roy. Sci. Belg. , lU, pt. 2, 1847, seance 

 de 7 aout, p. 103. 



No. 5211. Brussels. IVing 172, tail l6p, exp. culmen 

 29.5, xroa nostril 22.1^ depth at nostril 11.5, tarsus 

 43.0, iniddle toe minus clav/ 24.0, tail grad. 27.4, 

 = [Ghiesbrecht] "Tabasco". 



Mounted bird in good condition; pale blue eyes; 

 plumage spring or early suir:ner by vdng Sc tail abrasion; 

 rully adult; sex not indicated; probably [Eale. 



By comparison v^ith available specimens from Vera Paz, 

 Guateii:ala, this specimen is, definitely, of the race nov; 

 knoT.n as coebestis Ridg-aay. This might have been pre- 

 dicted on the published measurements alone J i 



The original description Tvas ncn-determinable on the 

 basis of subspecific status - the only locality was 

 "ilexique"; theiB ;vas no indication of restricted locality 

 and only the introductory statement that '^ the various 

 species there described were in the Brussels Museum. Bow- 

 ever, in the text of Esquire Omith. , pi. there is 

 plenty of good evidence, not only as to number of speci- 

 mens but of the various localities from v/hich Du Bus had 

 seen exairoles. These are "Tabasco, and San Pedro, near 

 0a:>:a.ca, in the cold country, and Tepitongo in the 

 temperate country. I have also seen specimens from Vera 

 Paz, Guatemala". There is also the observation that 

 young birds have parti-colored bills (mandibles) and that 

 the adults have bills entirely black. The original de- 

 scription called for a black bill and 5211 is the only 

 Mexican adult he had; furthermore the "over-all" leng'th - 

 the only measurement given in the origir^al description - 

 33 cm. - is that of 5211. As contributary evidence, the 

 measurements given in detail in plate apply only to this 

 bird. 



