Corac'udx of the Ethiopian Region. 189 



permit me to dwell more fully on the minor diflfcrences between 

 the two genera ; but I think that I have shown sufficient to de- 

 monstrate that Atelornis is one of the Ground-Rollers, but ex- 

 hibits affinities towards Coracias; while I have little doubt that 

 when the osteology of Brachypteracias and Geobiastes becomes 

 known, they will be found to form a link between Atelornis and 

 Leptosoma. 



Subfam. I. Coraciin^. 

 Conspecitts geytertnn Coraciinarum. 

 a. Rostrum gracile, compressum, multo longius quam 



latum 1. Coracias. 



h. Rostrum crassum, depressum, lougitudine latitudiui 



ad rictum sequante 2. Eurystomus. 



Genus 1. Coracias. 



Type. 

 Coracias, Linn. Syst. Nat. 1735, et ed. xii. vol. 



i. p. 159 (1766j C. garrula. 



Galgulus, Briss. Orn. ii. p. 63 (1760) . . . C. garrula. 

 Coraciura, Bonap. Consp. Vol. Anis. p. 7 (1854). C. cyanogastra. 

 Clavis specierum. 

 a. Cauda quadrata, rectrice extima baud elongata. 



a', nucha pileoque concoloribus 1. garrula. 



b'. nucha alba 2. ncsvia. 



I. Cauda furcata, rectrice extima valde elongata. 

 a. gula alba. 



a", gutture et pectore superiore Isete violaceo-rubris, 



illo albido striate : abdomine cyaneo 3. caudata. 



b". gutture albido striate : subtus omnino cyaneo . . 4. abyssinica. 

 b'. gula et pectore superiore lilascenti-brurmeis viridi 

 nitentibus concoloribus : abdomine saturate ultra- 

 marine 5. cyaiwgastra. 



1. Coracias garrula. 



Coracias garrula, Linn.; Riipp. Syst. Uebers. p. 23 (1845); 

 Hartl. Beitr. Orn. W. Afr. p. 17 (1852) ; Brehm, J. f. O. 1853, 

 p. 454; Heugl. Syst. Uebers. p. 17 (1856); Jard. Edin. N. 

 Phil. Journ. n. s. iii. p. 242 (1856); Hartl. Orn. W. Afr. 

 p. 29 (1857); Heugl. Ibis, 1859, p. 339; id. Peterm. Mitth. 

 1861, p. 21; Hartl. J. f. O. 1861, p. 104; id. Faun. Madag. 

 p. 29 (1861) ; Verr. in Vins. Voy. Madag. Ann. B. p. 1 (1865) ; 

 Schl. Mus. Pays-Bas, Coraces, p. 133 (1867) ; Layard, B. of 



