'_!(>! Clark, Anatomical Notes. [amS 



tomical features is striking, while in two details (secondary pala- 

 tini' process and foramen in osseous root' above sternum) in which 

 it differs from that genus it resembles I labia. It lacks the 'osse- 

 ous bridge' of the sternal manubrium so marked in Piranga and 

 Rhodinocichla. It seems to me therefore that Ridgway is right 

 in placing Saltator in the Fringillidte. 



Chlorophoni \. 



An adult male of CMorophonia caUophrys (Cabanis) from Costa 

 Rica has been at my disposal, li has been compared chiefly with 

 Piranga and Euphonia. Unfortunately alcoholic specimens of 

 other Tanagridee have not been available, excepting Rhodinocichla. 



The characters of the bill and tongue need no comments from me 

 but the tarsi show a certain character which does not seem to have 

 been noted hitherto. 



Tarsus. Examination of the alcoholic specimen revealed the 

 interesting fact that the tarsi are distinctly hooted. The three 

 scales which usually cover the front of the tarsus in tanagers are 

 fused together so that there is hardly a trace o\' the lines of division. 

 On noting this fact, 1 examined a large number o( skins of Chloro- 

 phonia (5 species), Pyrrhuphonia, and Euphonia (10 species) and 

 several genera o( more typical' tanagers, with the result, which was 

 surprising to me, that a hooted tarsus, as perfect as that of a thrush, 

 is by no means rare among these tanagrine birds. 1 find ii occurs 

 in Pyrrhuphonia constantly in both sexes and may well he con- 

 sidered one oi the generic characters. It is also fairly constant in 

 CMorophonia callophrys, longipennis, viridis, frontalis psittacina, 

 and occipitalis hm is less frequent in typical frontalis and in pretri. 

 In all these cases adult males generally have the tarsus booted, 

 hut in the females as a rule, and in the young the divisions between 

 the scutes are still to be seen. In Euphonia affinis, both sexes are, 

 as a rule, booted hut in most species of the genus, the scutes on the 

 front o{ the tarsus are quite distinct. Hooted tarsi are also found, 

 at least in adult males of Calospiza, Pcecilothraupis, Hemithraupis, 

 Chlorospingus and Mitrospingus. Very probably they will he 

 found in other genera and their occurrence throughout the Tana- 

 erridse deserves detailed investigation. 



