Vol. XXVIII] Recent Li(emture 125 



species, some of them, in our opinion, without sufficient reason, for though 

 they are undoubtedly closely allied representative forms, no evidence of 

 intergradation is brought forward. The new Corapipo also seems to us 

 worthy of specific rank. On the other hand Saltalor intermedins and 

 Astragalinus columbianus are granted binomials. 



The list of species and subspecies is so nearly complete that we have 

 noticed the omission of only one form, Sayornis nigricans nigricans, for 

 which there are two authentic Costa Rican records. 



While Ceryle inda and Tyrannus dominicensis have apparently never 

 been taken within the limits of this list, both have been found common at 

 Greytown, Nicaragua, just across the line, and there can be no doubt of 

 their occurrence in Costa Rica. 



The occurrence of Slelgidopteryx serripennis serripennis as a breeding 

 species is noteworthy, but it may be well to again call attention to the fact 

 that the presence of black on the under tail coverts is not necessarily an 

 indication of intergradation with any of the other forms of Stelgidopteryx, 

 as this is a variation known to occur throughout the bird's range. 



Very few if any typographical errors are discoverable, and the orthog- 

 raphy of the scientific names, revised by Mr. Todd, is almost above 

 criticism. There are a few inconsistencies in the gender endings not 

 corrected in the "Errata," but few works are altogether free from these 

 trifling defects. 



The system of nomenclature is consistently trinomial, but in some 

 cases where the specific name should be repeated to indicate the typical 

 subspecies it has not been done. 



Phainoptila is wrongly placed in the Ampelidae; Falco columbarius is 

 interpolated between F. albigularis and F . aurantius, which appear in the 

 Key as F. rufigularis and F. deiroleucus; the Brown Pelican stands as 

 Pelecanus fuscus instead of P. occidentalis . 



The mere mention of these slight errors unduly magnifies their impor- 

 tance. Few of them are of any consequence and they do not detract from 

 the general excellence of the work. 



The absence of an index is an omission for which the author is probably 

 not responsible. Doubtless there is one supplied with the complete vol- 

 ume of the 'Annals' from which this paper is reprinted, but a work of the 

 size and importance of this deserves an index of its own. — W. DeW. M. 



Ferry on a Collection of Birds from Costa Rica. 1 — This is an anno- 

 tated list of 74 species collected by the author in Costa Rica during 

 January, February, and March, 1908, at various localities on the Atlantic 

 slope, mainly at Guaybo, Coliblanco, and Turrialba. The annotations 

 often include interesting notes on the habits and haunts of a number 



1 Catalogue of a Collection of Birds from Costa Rica. By John Farwell Ferry, 

 Assistant, Division of Ornithology. Field Mus. Nat. Hist., Orn. Ser., Vol. I, 

 No. 6, pp. 257-282. "September, 1910." 



