142 PHYSIOLOGICAL SERIES. 



The following seven specimens are designed to show the 

 arrangement of certain thigh-muscles ambiens, caud-ilio- 

 femoralis 2 parts (femoro-caudal + accessory femoro-caudal, 

 Garrod), caud-ilio-flexorius 2 parts (semitendinosus + accessory 

 eemitendinosus,6ranW), and ilio-tibialis (tensor fasciae, GW/W), 

 and the branches of the great sciatic nerve. 



Garrod, Proc. Zool. Soc. 1873, p. 626. 



C. 187. Thigh with the pelvis and upper part of the shank of a Kiwi 

 (Apteryx mantelli) (subclass Struthioniformes). In this 

 bird all the muscles in question are present. The iliac 

 part of the caud-ilio-femoralis is, however, peculiar, being 

 perforated by the sciatic nerve a condition only found in 

 Struthiones and Crypturi. A blue rod is placed beneath 

 the portion of the pars ilio-femoralis posterior to the 

 perforation for the sciatic nerve ; a pale blue rod beneath 

 the pars caudi-femoris ; and black bristles beneath the 

 tendon of insertion of the ambiens. 0. C. 64 Y b. 



C. 188. A similar specimen of the thigh-muscles of Pauxi mitu 

 (suborder Gallinae, order Gallograllae, subclass Galliformes). 

 In this bird all the muscles are present. The pars caudi- 

 femoris of the caud-ilio-femoralis is, however, very slender. 

 0. C. 64 Y a. 



C. 189. Muscles of the thigh of a Great Bustard (Otis tarda) 

 (suborder Fulicariae, order Gallograllae). The pars caudi- 

 femoris of the caud-ilio-femoralis is absent. 0. C. 64 Y/. 



C. 190. Muscles of the thigh of a Tree- Duck (Dendrocygna 

 autumnalia) (subclass Anseriformes). The pars accessorius 

 of the caud-ilio-flexorius is absent. The pars ilio-femoris 

 of the caud-ilio-femoralis is very strongly developed. 

 O.C. 64 YC>. 



C. 191. Muscles of the thigh of a Buzzard (Buteo tachardus) 

 (subclass Falconiformes) . All the muscles in question but 

 the ambiens and pars caudi-femoris of the caud-ilio- 

 femoralis are absent. 0. C. 64 Y d. 



