212 ZOOLOGY. 



SO little value is attached to the names proposed by 

 Von Heuglin that, when furnishing descriptions of 

 some of the species several years later, he has himself 

 changed a great proportion of those given by him in his 

 former essay. In the following pages I shall refer to 

 this paper as little as possible. 



Short notices by Von Heuglin, with occasional de- 

 scriptions of species both of birds and mammals, are 

 scattered through Cabanis' " Journal fur Omithologie," 

 the " Ibis," the " Nova Acta Academiae Leopoldo-Caro- 

 linse," and " Petermann's Mittheilungen," during the last 

 ten years. And recently (1867-69) some most valuable 

 and exhaustive descriptions of all the species belonging 

 to several families of Insessorial Birds inhabiting North- 

 eastern Africa by the same naturalist have appeared in 

 the " Journal fur Ornithologie," and a synopsis of the 

 MalurincB in the "Ibis "for 1869. During the course 

 of this year also the same writer has published the first 

 eight parts of an elaborate work on the birds of North- 

 eastern Africa, called " Ornithologie Nord-ost Africa's." 

 To all of these later papers, and to the more extensive 

 work just mentioned, I have supplied references in the 

 following pages. I cannot in aU cases coincide in Von 

 Heuglin's nomenclature. His descriptions, however, are 

 excellent, and detailed, and numerous references are 

 given to the works of previous writers. 



In the subsequent pages only the vertebrata of my 

 Abyssinian collections have been fully enumerated and 

 properly worked out. Despite much time and labour, 

 the synonomy is far from being so thorough as I could 



