HERODIONES 427 



are a little more complicated. The tendon of the brevis is 

 obscurely divided into two from nearly its commencement ; 

 the more anterior of these again divides into two, one of which 

 runs forward to be inserted on to the fore arm separately 

 from the hinder part, which remains continuous with the rest 

 of the tendon ; there is a recurrent slip to longus. 



In Ahdimia the tendons are much the same ; in both 

 these genera the propatagialis pectoralis of Ftjebeingee is 

 muscular. 



In Tantalus leucocephalus the broad fascia-like tendon of 

 the brevis gives off a wristward slip, from the junction of 

 which with tendon of extenso?- matacarpi radialis a patagial 

 fan arises. 



The pterylosis of the Ciconiidse has been studied by 

 NiTZSCH. The neck is continuously feathered down to 

 about the middle, where the spinal and ventral tracts 

 respectively become divided into two. The two spinal 

 tracts are narrow but strongly feathered, and cease abruptly 

 at about the end of the scapula ; after a short space they 

 recommence as a bifid but feebly feathered tract, the limbs 

 of which unite a little way in front of the oil gland. The 

 ventral tracts are broad upon the pectoral region but narrow 

 towards the vent. 



In Pseudotantalus leucocephalus Nitzsch could not find 

 the aftershaft, but nevertheless one appears to exist. 



In Mycteria and Leptoptilus argala the dorsal tract has 

 posteriorly no spinal space. 



In L. argala Nitzsch states the aftershaft to be absent. 



The oil gland has two apertures on each side in Ciconia 

 alia, five in C. nigra ; L. argala has no less than six. 

 Anastomus coromandelicus has three ; Tantalus leucocephalus 

 has the same number. 



The deep flexor tendons of the Ciconiidse are constructed 

 on the plan of type I. In Tantalus leucocephalus there is a 

 slight variation ; a small vinculum runs to flexor communis 

 before the latter divides into three, and then a broader vincu- 

 lum, chiefly going to tendon of digit II., but also slightly 

 to III. and IV., binds together the two tendons. In C- 



