RI:NDAHL, BIRDS from PANAMA, COSTA RICA AND NICARAGUA. 33 



In the same year as Carriker's above cited list appeared, 

 Count Berlepsch published bis »Revision der Tanagriden» 

 (Ber. iiber d. V. Int. Orn.-Kongr., 1910, page 1001). In that 

 paper Count Berlepsch describes the individuals occurring 

 from Southern Honduras to Panama as a separata subspecies, 

 C. larvata centralis, distinguished from C. larvata (from 

 southern Mexico to Honduras) by their somewhat smaller 

 size and paler coloration. 



I think, however, that this central race must be very 

 closely allied to the northern one, and in many cases almost 

 impossible to distinguish. Before me I have five specimens 

 of typical C. larvata from Guatemala (sex not det.), and com- 

 pared with those, the Nicaraguan examples are paler than 

 the most richly colored of the Guatemalan birds, there are, 

 however, specimens among the latter, which agree very well 

 with those from Nicaragua. The Costa Rica specimen on 

 the contrary is decidedly more greenish on head, the blue 

 colour on sides of body is paler than in the Guatemalan and 

 Nicaraguan birds and the edgings of remiges and greater 

 wing-coverts raore restricted. As to the colour of the throat, 

 this is in the most richtly coloured Guatemalan specimens 

 distinctly darker than in the species from Nicaragua and 

 Costa Rica, but also in this character they intergrade, one of 

 the birds from Guatemala being in this respect unseparable 

 from the Nicaraguan examples. In other characters I cannot 

 State any differences in the present material. 



The length of wing is as follows: 



Guatemalan sp. 75, 74, 72,5, 70,5, 70,5; Nicaraguan sp. 

 69,5, 66,5; Costa Rica sp. 70,5. 



The corresponding measurements stated by Ridgway 

 (Birds N. M. Am., II, 1902, p. 48) in birds from southern 

 Mexico to Honduras are 68,1— 72,6 ^71, 1) in male, 65,5—69,9 

 (67,8) in female. Count Berlepsch states for C. 1. centralis 

 70 and 687.4. 



From this will be seen, that all the measurements of 

 wing found in the southern birds lies within the limits of 

 the range of variation of the true C. larvata. 



I don't know the greatness of the material, upon which 

 Count Berlepsch based his separation of a southern form. 

 We must, however, remember, that it seems to be a great 

 deal of variation in the characters in question, referable to 



ArJciv fur zoologi, Bd 12, N.-o 8. 3 



