312 Ml-. 0. Salvia on Mr. Lawrence's 



actually existing undiscovered in Costa Rica ; but when a species 

 has been observed both north and south of the Republic, it is 

 very likely indeed that somewhere in its varied climate such a 

 species may occur ; where, however, a species is only to be found 

 on one side, the chances that its range extends beyond are much 

 more hypothetical. Mr. Lawrence gives a list of sixty-two 

 species which may occur in Costa Rica. Of these, twenty- six 

 are found both further north and further south, the rest extend 

 their range only to the confines of the Republic*. 



TURDID^. 



No less than five species of Catharus are found in Costa Rica ; 

 and a sixth, C. griseieps, Salv., which Mr. Lawrence omits from 

 his possible additions, is found in Veragua. The difference 

 observed between this when compared with Lafresnaye's type 

 of C. fuscata is perhaps sexual rather than seasonal. Female 

 Cathari, at least of the dark Malacucichla group, are usually 

 paler on the back, and have the bill darker. The bill in some 

 male specimens of Catharus is orange or yellow, as in many of 

 the true Thrushes. Since writing my notes on Veragua birds 

 I have seen three additional specimens of Turdus obsoletus, all 

 closely resembling one another, and one of which was marked 

 " male." I am therefore now inclined to abandon the suppo- 

 sition that these specimens are females of some black-coloured 

 male of which we have not yet seen examples, and to come round 

 to Mr. Lawrence's view that both sexes are coloured alike, and 

 that the species must be placed near T. grayi. 



Troglodytid^. 



There seems to be some confusion respecting the types of 

 Troglodytes tessellatus, D'Orb. & Lafr. Mr. Whitely has sent 

 in specimens from Arequipa which agree well with the Paris 

 specimens marked tessellatus, collected by d'Orbiguy at Tacna. 

 These hardly differ from the Panama Wren. 



* It may be remarked that Pyranga hepatica of Mr. Lawrence's Vera- 

 gua list is P. testacea, Scl. & Salv., and G^-allaria guntemalensis is G. 

 princeps, Scl. & Salv. 



