602 MR. (i. W. BUTLER ON THE [DcC. 3, 



corresponding to the right aortic arch is present ; but its presence is 

 found in so many Accipitres that it is highly characteristic of them. 

 I quote from MS. of Garrod the following measurements of the 

 various parts of the alimentary tract to show how close is the 

 resemblance between the two : — 



Cariama. Ghunga. 

 in. in. 



Small intestine 33 33 



Large intestine .... 3 3*5 



Caeca 8'75 \ ^.^ 



The expansor secundariorum is as in Chauna and Cariama. 

 There is no biceps slip to patagial tendon as in Cariama. The 

 anconeus has an accessory flat tendon attaching it to humerus. 



The pectoral muscle arises from the whole of the sternum, which 

 is free from the origin of the second pectoral ; it also arises from 

 the aponeurosis of the second pectoral. It is partially divided by a 

 septum into two muscles. 



The tensores patagii brevis and longus appear to form one muscle 

 at their origin ; this muscle receives a tendon from deltoid ridge of 

 humerus. The tendon of brevis is very large and flattened out, but 

 as it is accurately figured by Filrbringer' I do not describe it more 

 fully. A drawing of Prof. Garrod's shows that in Cariama the 

 tensor brevis tendon is similar, and he particularly states that there is 

 no biceps slip ; neither Fiirbringer nor myself have found a biceps 

 slip in Chung a. 



The accessory femoro-caudal is present in Cariama, and it is stated 

 by Garrod in a MS. note to be missing in Chunga ; however, I 

 found this muscle in the specimen dissected by me ; it was thin and 

 slender, and became tendinous in the middle between its origin and 

 insertion. 



The biceps brachii in Chunga is bifid at its insertion. 



On the Relations of the Fat-bodies of the Sauropsida. 

 By Gerard W. Butler, B.A. (Communicated by 

 Prof. G. B. Howes, F.L.S., F.Z.S.) 



[Received November 26, 1889.] 

 (Plates LIX. & LX.) 



Contents. p 



I. Introductory 603 



II. On the Eelations of the Fat-bodies of the Sauropsida, and on 



certain points in the Anatomy of Monitors 603 



III. Subperitoreal Fat of Mammals 608 



IV. Some Remarks on the Function of the Subperitoneal Fat-bodies 



of the Sauropsida 609 



^ Untersuchungen z. Morph. u. Syst. Vcigel, Taf. xs. fig. 9. 



