PERONEAL MUSCLES IN BIRDS. 1063 



passing over the bridge of the tibialis anticus to usual flat 

 insertion. 



Trochilidje. Amazilia felicice. — The P. longus was absent and 

 the P. brevis exactly as in the Swift. 



Colii. Colius capensis. — The P. longus was present in a ves- 

 tigial condition, with only superficial origin and a slender tendon 

 ending in the anchor, with no slip to III. The P. brevis was 

 very large and strong, arising from nearly the whole length of 

 the shaft, involving both fibula and tibia. Its strong but rather 

 short tendon flattened oiit to the usual insertion. 



Trogones. Trogon puella and T. atricollis. — The P. longus 

 was present but not so large as the P. brevis ; its origin is chiefly 

 deep, and it has a broad anchor and fair slip to III. The 

 P. brevis is very large and strong, arising from the greater part 

 of the length of the shaft and ending in a short but stout tendon 

 which flattens out to the usual insertion. 



Pici. 



GalbulidtB. Galhida alblrostris, G. rujiventris. Urogalba para- 

 disea. — My material for examining these was not good, con- 

 sisting of partly dissected specimens which had been in spirit for 

 many years. The P. longus was certainly very small, but there 

 was a distinct tendon running to form an anchor, and in one 

 case a trace of the slip to III. The P. brevis was larger than 

 the longus and had a stout tendon flattening out to the usual 

 insertion. I should be glad, however, to examine fresh specimens. 



Capitonid*. Megcdcema virens. Cyanops Jiavifrons. — The 

 P. longus was a large muscle with a wide superficial, and short 

 fascial and deep origins. The triangular muscular belly rapidly 

 narrowed to a stout tendon, which, however, was not so strong as 

 the tendon of the brevis, gave off a long and rather narrow 

 anchor and was continued as a good slip to III. The P. brevis 

 arose from the fibula beginning just below the biceps tendon, 

 and from a considerable part of the tibia, and passed into a 

 strong tendon which flattened out to the usual insertion. (Text- 

 fig. 187.) 



Rhamphastidfe. Aidacorhcmnjyhus prasinus. Pteroglossus in- 

 scriptus. Ehaniphastos discolor (2 examples). Selenidera macu- 

 lirostris (2 examples). — In all these Toucans (text-fig. 188) the 

 P. longus was of fair size but with chiefly fascial and long deep 

 origins. The short tendon gave off a narrow anchor and was 

 continued as a slender slip to III. The P. brevis was a stronger 

 muscle, its stout tendon forming the axis of a muscular mass 

 arising from the tibia and fibula for three-quarters the length of 

 the shaft. The tendon then passed through a strong fibrous 

 bridge and had the normal flat insertion. 



Picidag. Dendrocopus major. Brachypternus aurantiacus. Co- 

 laptes onexicanoides. Gecinus vittatus. Hypoxanthus rivolii. — In 

 the Woodpeckers I found the P. longus always present but rather 

 weak and with chiefly superficial origin. Its tendon was very 

 thin and flat and formed the usual anchor, and gave ofi" a thin 



