XIX 



The six years after the issue of the two last-mentioned publications passed away without 

 material influence on the history of the Galbulidse. But in 1862 and 1863 the group came 

 g-gain under review. In 1862 I catalogued the examples of the Galbulidse in my collection, in 

 my ' Catalogue of American Birds,' My collection then embraced thirty-three specimens, 

 referred to fourteen species, of which the synonyms are fully given in the ' Catalogue.' In 

 1864 Messrs. Cabanis and Heine fil. published the first division of the fourth part of their 

 celebrated catalogue of the Museum Heineanum. The Galbulidae are here arranged next to the 

 Trogonidse, and a complete account of all the species known to the authors is given. These are 

 twenty in number, and are referred to six genera (omitting the fictitious Galhuloides). Several 

 of the generic terms are changed, as not being classically compounded. 



In his remarkable essay on the palatal structure of birds, published in 1867*, Professor 

 Huxley first recorded the fact that, as regards this part of its conformation, Galhula closely 

 resembles Succo, and arranged both these forms in the second section of his Coccygomorphse, 



In 1869 Gray issued the first volume of his ' Hand-list of Birds,' which included the 

 Jacamars. They are here arranged as a separate family of " Fissirostres Diurnse," following the 

 Meropidae ; and the list contains twenty-two species, divided into three genera. 



In 1871 Herr v, Pelzeln gave a more complete account of the Galbulce collected by Natterer, 

 in his ' Ornithologie Brasiliens.' That excellent and energetic naturalist seems to have sent 

 home no less than 104 specimens of these birds, illustrative of eleven species. 



In our catalogue of the Neotropical avifauna, published in 1873f, Mr. Salvin and I recognized 

 nineteen species of the family Galbulidse, and located it, according to the modification of Professor 

 Huxley's system which we followed, at the head of the series of " Coccyges Zygodactylse." 



In conclusion I may mention that at present my cabinets contain sixty-five skins of Jacamars, 

 amongst which all the known species are represented, and those of Messrs. Salvin and Godman 

 ninety-nine specimens of sixteen species. The present work is based entirely upon the series 

 formed by these two collections, 



IV. Classification of the Jacamars. 



As will be found mentioned in the article on Jacamerops grandis, I consider that the 

 Galbulidae may be most naturally divided into two groups, of one of which Jacamerops is the 

 sole known representative, while the five remaining genera belong to the typical Galbulinse. 

 The six genera of Galbulidse may be shortly diagnosed as follows : — 



Family GALBULIDiE. 



Subfam, Galbulhst^ : rostrum rectum, elongatum, compressum, acutum ; apertura narium 

 rotunda, nuda, setis paucis obsita ; rectrix externa aut parva aut absens, 



A, Cauda elongata, plus minusve graduata. 



a. Rectricibus mediis valde elongatis 1, Urogalha. 



h. Rectricibus mediis vix ultra reliquas protensis 2. Galhula. 



* P. Z, S. 1867, p. 415. t ' Nomeuclator Avium Ncotropicalium :' Loudon, 1873. 



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