22 Cherrie, List of Birds of Son Josh Costa Rica. [January 



24. Geothlypis Philadelphia. — Not uncommon from the middle of Sep- 

 tember until the first of April. 



25. Geothlypis macgillivrayi. — There are only three specimens in the 

 Museum collection 



26. Geothlypis caninucha icterotis. — Abundant resident about San 

 Jose. Breeding commences the latter part of May. See further Proc. 

 U. S. Nat. Mus., Vol. XIV, p. 526. 



27. Icteria virens. — All specimens taken are in fully adult plumage. 



28. Sylvania pusilla pileolata. — Adult and young birds are taken in 

 about equal proportions. 



29. Sylvania canadensis. — Of fourteen specimens collected about the 

 city only one proved to be a male; that one was in immature plumage. 

 The females also are duller than spring examples from the North. 



30. Basileuterus delattrii. — One of the most abundant resident birds in 

 the vicinity of San Jose. Breeding commences the last of May. I think 

 only one brood is reared each year. A nest brought with two fresh eggs 

 and the dead female to the Museum, June 6. 1S90, is constructed of dry 

 grass and fine rootlets, lined with horse hairs. Outside it measures 2.50 

 inches deep bv 4.50 in diameter, inside 2.10 deep by 1.87 diameter. It 

 was placed on the ground at the foot of a tree in a large coffee plantation. 

 The eggs are white, thickly speckled, especially about the larger end, 

 with cinnamon-rufous. They are oval in shape, and measure .75 X .57 

 and .77 X .55 inch. 



31. Setophaga ruticilla. — Males in adult plumage are seldom seen about 

 the city. At lower altitudes adults seem quite as common as young. 



32. Progne chalybea. — A resident species about San Jose, but most 

 abundant during the breeding season from May to the last of July. A 

 favorite nesting site is in the hoods of the arc electric street lamps. The 

 young do not differ from the adult bird except in having softer plumage. 



33. Chelidon erythrogaster. — Abundant from September until March. 

 Birds in perfect plumage are rarely seen. In 1890 tlie first arrivals were 

 noted Aug. 27. 



34. Atticora cyanoleuca montana. — A common resident. Breeds in 

 the roofs of the houses. The young birds begin appearing about the first 

 of July. They differ from the adult in being washed with pinkish-buff 

 below, including the under tail-coverts, while above the metallic lustre 

 of the feathers is not so bright. In some examples the throat and belly 

 are white and the breast is crossed by a huffy band. 



The tnale of a pair that had their nest in the roof of the Museum was 

 accidentally killed before the eggs hatched. The female did not desert her 

 post, and when the eg!^s were hatched attended to the wants of the young 

 alone. 



35. Stelgidopteryx serripennis. — Common resident. Breeds abund- 

 antly. 



36. Vireo olivaceus. — Not at all common anywhere or at any time in 

 Costa Rica. 



37. Vireo flavoviridis.— I cannot add anj-thing to my notes on this 

 species published in this journal, Vol. VII, p. 329. 



