Recently published Ornithological Works. 539 
points to discuss, though our attention is called to the fact 
that there were no very great “ rushes 99 of migrants in this 
wet cold spring, and that the height of the migration was 
from April 15th to May 20th. It seems, however, that the 
lists of species arriving on the different parts of the coasts 
(p. 11) need reconsideration; for instance, the Ring-Ouzel 
is entered as arriving solely on the western half of the south 
coast, while on p. 3 7 that species is reported from the Spurn 
Head Lighthouse and from Norfolk. The meaning may be 
that on the south coast the bird only arrives on the western 
half; but in that case the wording should he clearer. 
54. Carriker on Costa Rican Formicariidee. 
[Notes on Costa Rican Formicariidse. By M. A. Carriker, jun. Ann. 
Carn. Mus. v. no. 1 (1908).] 
In going through the series of Formicariidae in the 
Carnegie Museum at Pittsburg Mr. M. A. Carriker has 
made several discoveries relating to the specimens collected 
in Costa Rica by himself in the years from 1902 to 1907. 
These relate to Cercomacra tyrannina and the subspecies 
named by Mr. Bangs C. crepera } which neither Mr. Carriker 
nor Mr. Ridgway seems to consider valid ; to Drymophila 
stictoptera Lawrence, which is regarded as the male of 
D. Icemosticta Salvin; and to Myrmelastes immaculata occi¬ 
dentals Cherrie, and its rank, which Mr. Carriker considers 
should be specific and not subspecific. 
55. Chapman*s “ Habitat” Bird-Groups . 
[The Habitat Groups of North-American Birds in the American 
Museum of Natural History. By Frank M. Chapman, Curator of Ornith¬ 
ology. Guide Leaflet, Series no. 28. February 1909.] 
At South Kensington, as we all know, the plan adopted 
for the exhibition of the select mounted specimens of birds 
is to place examples of each species with the nests, eggs, 
and other appurtenances in a separate case. In the 
American Museum of Natural History at New York a some- 
