324 ON THE ANATOMY OF 



the intimate relationship of that genus to the Barbets and Toucans. 

 Unfortunately I can give no exact information on this point, the only 

 specimen I have of an Indicator having been eviscerated. 



The only other family of birds in which, so far as I am aware, the 



P. Z. S. 1882, gall-bladder assumes this peculiar vermiform shape, and lies freely in the 



P- 95< abdominal cavity, is that of the Picidae. Nitzsch * describes the liver of 



the "Woodpeckers (of which he examined Gecinus viridis and canus, 



Dryocopus major, medius, and minor, and Picus martius) as being " immer 



mit ausgezeichnet langer darmformiger G-allblase ;" and I can quite 



confirm this description as being applicable to the last-named species. 



Liver, stomach, duodenum, &c., of Rhamphastos dicolorus, from in front, showing the 



peculiar intestiniform gall-bladder (g. b). 



St, stomach ; d, duodenum ; p, pancreas ; r. h. d, I. h. d., right and left hepatic ducts ; 



c. d, cystic duct. 



Garrod also correctly noted, in his MSS., the " long intestiniform gall- 

 bladder " of Gecinus. The similarity, therefore, in this respect of the 

 Capitonidae f to the Picidae strengthens the many arguments for the 



* In Naumann's Orn. Deutschlands, v. p. 252. 



t I use this term, with Garrod (Coll. Papers, p. 464), to include the Toucans and 

 Indicator, as well as the true Barbets. 



