1878.] 



MR. A. H. GARROD ON THE MOMOTIDAE. 



101 



a minute tuft on the apex of the oil-gland, although in the several 

 species of Momotus there is no trace of any tuft ; in fact they have 

 lost it, evidently since the family was differentiated off. 



Such being the case, the Momotidae must be placed with the Pici- 

 formes, as defined by me, instead of with the Passeriformes ; and the 

 amended arrangement may be thus tabulated, the Todidae and Mo- 

 motidae almost certainly forming a single family, as has been sug- 

 gested by many, and which is confirmed by the observation made by 

 Dr. Murie that in the Todidae the beak is serrate '. 



Anomalogonat^e. 



Aves Pici/ormes. 



Bucerotidae. 



Alcedinidae. 

 J Momotidae. 

 \ Todidae. 

 [ Ramphastidae. 

 < Capitonidee. 

 I Pici. 



Aves Passeriformes. 

 Coraciidae. 

 Steatomithidae. 

 Caprimulgidas. 

 Galbulidae. 

 Meropidae. 

 Trogonidae. 

 Bucconidae (?). 

 Passeres. 



In further favour of the inclusion of the Momotidae with the Pici- 

 formes may be mentioned the pterylographic peculiarity found in 

 them all, namely that the outer pectoral branch of the inferior tract 

 is separated almost entirely from the inner branch, with which it 

 blends for nearly its whole distance, or entirely, in the Passeriformes. 



From a skin, I have been able to determine that the deep flexor 

 tendons of the leg of Todus viridis are arranged on exactly the same 

 plan in it as in the Momotidae 2 , and that its tensor patagii brevis 

 also terminates in exactly the same manner as it does in them 3 . 



The syrinx of the Momotidae has never been fully described, so far 

 as I am aware. I therefore exhibit a figure of it as it appears in 



Syrinx of Momotus lessoni. 



Momotus lessoni, which resembles that of the other species which I 

 have examined. Fig. A is the anterior view ; B, the posterior. 



1 P.Z.S. 1872, p. 671. 



* Fide P. Z. S. 1875, p. 344. 



Vide F.Z.S. 1876, p. 511. 



