1922.] TRINIDAD BIRDS. 185 



Urich, F. W. ..1895 Visit to the Oropuche Guacharo Cave. 



Journ. Trinidad Field Nat. Club II 

 pp. 231-234. 



Urich, F. W. . . 1909 Food of Quisqualis lugubris. 



Bull. Dept. Agr. Trinidad IX p. 160. 



Urich, F. W. . . 1917 The Yellow-headed Cacique (Agelaius 



icierocephalus) Bull. Dept. Agr. 

 Trinidad and Tobago XIV. p. 24. 



de Verteuil . . 1858 Notes on Birds. 



Trinidad, its Geography and Resources 

 1st Ed. pp. 118-126 and 423-429. 



Wall and Sawkins...l860 Note on Guacharo Caves. 



Geology of Trinidad p. 29. 



Williams, C. B. . . 1921 Notes on Birds eating Froghoppers. 



Dept. Agr. Trinidad Memoir No. 1 p. 70 

 pp. 70-78. 



June 1.1922. 



