Dr. J. Marie on the Genus Colius. 269 



a delicate lengthened osseous rod. Above each acetabulum is a 

 small eminence and facet, from which a line drawn backwards 

 marks the junction of the ilium and ischium — this being sharp 

 but not specially overarching. The ischial foramen beneath is 

 of a long oval figure. 



3. Wing- and Leg-pieces.— Oi the wing-bones, the humerus 

 is short and relatively stout, both in the head, which is capacious, 

 and in the rounded shaft. The pneumatic foramen, as usual, 

 opens under the head. A small tubercle juts out above the 

 outer lower condyle. 



The bones of the forearm barely exceed the humerus in length. 

 The radius, more usually slender, in this case has proportionally 

 a stout shaft compared with the ulna. Metacarpals and pha- 

 langes are each and all of goodly thickness ; and the first meta- 

 carpal is broad. A delicate plate, or partial bridge of bone, 

 passing from the first to the second metacarpal at their upper 

 (proximal) ends is noteworthy. 



The femur is by no means so powerful as the humerus, 

 their length being almost identical. Its trochanter is rather 

 rounded, and not prominently ridged. 



The tibia, again, far exceeds the ulna in magnitude ; and the 

 fibula is diminutive and spicular. The upper anterior tibial tube- 

 rosity (or " cnemial " ridge) is not prominent as in some birds. 

 Inferiorly, there is a small intercondylar bridge of bone, through 

 which the extensor tendons pass at the joint ; but some of these 

 are also restrained by ligamentous bands situated obliquely. A 

 tiny tubercle of bone above the external condyle marks the outer 

 attachment of the latter. 



The tarsus, or, as more frequently named by anatomists, 

 tarso-metatarse, is about two thirds the length of the tibia, and 

 has a more antero-posteriorly compressed shaft. In front a 

 longitudinal, but somewhat oblique convex ridge traverses from 

 the upper outer margin to the lower middle and partially inner 

 digital knuckle. Behind, the fluting of the shaft is straighter 

 and to the inner side. The proximal or articular end of the 

 bone, which plays against the bottom of the tibia, is concavely 

 incised at the middle of its fore border. At its hind border is 

 the so-called " calcaneal " eminence — in this case small, semi- 



