Contributions to Bird-Anatomy and Classification. 31 



between the scapulae. In the Musophagidse the pterylosis 

 above is peculiar, and gives no aid in determining their 

 affinities. The Strigidae, Caprimulgidse, and Steatornis are, 

 judged by this criterion, Homalogonatous, although in them 

 the ambiens and accessory femoro-caudal are absent, at the 

 same time that they have caeca and a nude oil-gland. But 

 the very difficult question of the true affinities of these groups 

 was one on which Prof. Garrod had not finally made up his 

 mind. 



Leaving these three groups aside, the following is the 

 arrangement adopted by Prof. Garrod of his ^^ subclass" 

 Anomaloffonatse. 



PlCIFORMES. 



Oil-gland tufted. 



Caeca absent. 



External branch of 

 pectoral tract given 

 otf at commence- 

 ment of breast *. 

 (A) X Y. 



Picidpe. 



Capitouida3 f- 



Upupidse. 



Bucerotidfe. 



Coliidos. 



Alcedinidae. 



Momotidae. 



Passeriforjies. 



Oil-giand nude. 



Cteca present. 



Pectoral tract simple, 

 01" with the exter- 

 nal branch given off 

 beyond middle of 

 breast. 



A X (Y). 



Passeres. 



Bucconidse (?). 



Galbulidfe. 



Coraciidfe. 



Meropidse. 



Trogonidte. 



Cypseliformes. 



Oil-gland nude. 

 Ca3ca absent. 

 A. 



Macrochires. 



As regards the Homalogonatse, these were divided (P. Z. S. 

 IS/i-, p. 119 &c.) into four orders, the Galliformes, Anseri- 

 formes, Ciconiiformes, and Charadriiformes, the latter inclu- 

 ding all the Homalogonatous schizorhinal birds. The further 

 subdivisions of these will be found in Prof. Garrod^s paper as 

 quoted, and need not be repeated here. 



The Strigidae, there included with the Falconidse amongst 

 the " Ciconiiformes,^' would almost certainly, in a revised ar- 

 rangement, have been removed from there and placed else- 

 where. The Tubinares, or Petrels and Albatrosses, placed 

 with the " Anseriformes,'"' Avere found, on further examina- 



* P. Z. S. 1878, p. 931. 



t Including the Ramphastincc and Indicator {t. c. p. 935). 



