Recently pubiished Oruil/iolur/ical Works. 539 



points to discuss, tliough our attention is called to the fact 

 that there were no very great '' rushes " 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 ari'iving 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. 37 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 be clearer. 



54. Carriker on Costa Rican FormicariidcB. 



[Notes on Costa Rican Formicariidae. By M. A. Carriker, jun. Ann. 

 Carn. Mus. v. no. i (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. I^mosticta Salvin ; and to Myrmelastes immaculata occi- 

 dentalis Cherrie, and its rank, which Mr. Carriker considers 

 should be specific and not subspecific. 



55. Chapman's ^' Habitat" Bird-Groups. 



[The Habitat Groups of Nortli-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 Natui'al History at New York a some- 



