32 bulletin: museum of comparative zoology. 



The specimen which proves to be the type of Turdus niveicapiUus 

 Lafr. was entered by Verreaux in the Catalogue of the Lafresnaye 

 Collection as Bessonornis sivamsoni Bp. A careful comparison of 

 specimens proves that Lafresnaye's bird is what has been currently 

 called Cossypha verticalis Hartlaub. Lafresnaye's name must, of 

 course, be used for the species, antedating Hartlaub's by twelve years. 



Races of Saltator Striatipictus Lafresnaye. 



We have before us a series of 104 skins of Saltator striatipictus, a 

 careful study of which forces us to recognize six races, two of which 

 are here described as new. It is possible to find examples of one race 

 which agree very nearly with some of another, but the different races, 

 in series, stand out very definitely. 



Young birds are more heavily marked and darker below than adults, 

 and old birds in breeding plmiiage are somewhat grayer above than 

 they are in winter or autumn. 



L Saltator striatipictus furax, subsp. no v. 



Type.— M. C. Z. 118,65L Adult d". Western Costa Rica: 

 near Boruca. 27 May, 1906. C. F. Underwood. 



Characters. — Similar to Saliator striatipictus striatipictus Lafresnaye, 

 diftering in being slightly smaller, and much darker below; the stripes 

 on the under parts very wide and heavy and oUve-green; the dark 

 stripes cover the whole under parts often including the belly, and tend 

 to coalesce at the sides of the breast and sides of the neck. This form 

 is most nearly related to S. striatipictus isthmicus Sclater; it is of about 

 the same size, but much darker and greener below and more hea^^ly 

 striped. The very darkest specimens of isthmicus (possibly immature 

 birds) resemble closely the very palest examples of the new form. 



Measurements.^ Type, adult cf ; wing, 90; tail, 82; tarsus, 22.5; 

 exposed culmen, 18. 



Specimens examined. — Twenty-one from western Costa Rica; 

 Boruca, Lagato, and El General. 



2. Saltator striatipictus isthmicus Sclater. 



Saltator isthmicus Sclater, Proc. Zool. soc. London, 1861, p. 130 

 (Panama). 



Type-locality. — Panama. 



