RiDGWAY 0)1 the Genus Psittaciila. 



461 



the preparation of my 'Review' — an oversight much to be re- 

 gretted but unavoidable, since at that time no copy ot" tlie volun.e 

 containing the paper in question was accessible to me. 



The two species particularly treated by Dr. Hartlaub are his 

 new P. spenffeli (misspelled spengleri on the plate), fiom 

 Baranquilla, Columbia, and P. cyanochlora (Natt., MS.), from 

 the Rio Branco (a northern tributary of the Lower Amazon). 

 The former is probably the same as my P. exqiiisita^ from Car- 

 tagena, and the latter may be the same as my P. deliciosa^ from 

 Santarem and Diamantina, although there are points in Dr. 

 Hartlaub's descriptions which render the matter uncertain until 

 type-specimens can be actually compared. For example, regard- 

 ing P. spengell he says that the bill is '■'•much laiger," than in 

 P. cyanopyga^ whereas in the type of P. exquisita it is rather 

 smaller than in that species; the inner webs of the primaries are 

 said to be black in P. spengell^ whereas in P. exquisita they 

 are dull green, but little darker than the outer webs ; the upper 

 tail-coverts are said to be turquoise-blue, whereas in P. exquisita 

 they are all pure light yellowish green, like the tail.* The hab- 

 itats of the two birds are so close togetlier, however (both being 

 in the delta of the Mugdalena River) that there is very little 

 likelihood of the two birds proving distinct, notwithstanding these 

 apparent differences, which may be found to disappear when 

 specimens are compared. 



The bird described by Dr. Hartlaub as P. cyanochlora {ex 

 Natterer, MS.), seems to be very closely allied to my P. 

 dciiciosa^Aud possibly the same ; but several discrepancies indicate 

 its probal)le distinctness, at least as a subspecies. These discrep- 

 ancies are as follows : 



Sides of head 

 Upper tail-coveit> 



Size 



In P. cyanochlora, 



dilute 3'ellowish green, 

 like under parts. 



fine emerald green, like 

 rump. 



"altogether a larger bird, 

 with a much smaller 

 beak" (as compared Avith 

 P. spengeW). 



vivid Pari 

 forehead. 



clear yellowish green, like 

 tail. 



slightly smaller, with the 

 bill hardly smaller though 

 somewhat narrower (as 

 compared with type of P. 

 exquisita). 



* In the rather poor figure (pi. 38, fig. i), however, they are colored green, while the 

 lower tail-coverts are colored pure yellow in strong contrast ! 



In /•*. (feliciosa, 



een, like 



