356 MB. p. CHALMERS MITCHELL ON THE [May 7 



Flexor digitorum profundus reached nearly to the tip of the 

 second phalanx of digit II. 



Flexor carpi uhutris. The sesamoid was not ossified. 



Extensor brevis pollkis arose by two fleshy digitations from the 

 dorsal face of metacarpal I. It was inserted to the base of the 

 thumb. 



The second abductor pollicis, described by us in PaJamedea, was 

 not present. 



Badio-metacarpalis ventralis absent. 



JJlni-metacarpalis dorsalis, not found by us in Palamedea, 

 present. The origin is a strong tendon from the distal end of 

 ulna on its dorsal surface near the radius. It divides into a series 

 of digitations, the most radial of which is inserted by a tendon to 

 the base of metacarpals II. and III., the others fleshy to the 

 ulnar side of metacarpal III. 



Muscles of the Thigh and Leg. 



Sartorms, glutei anterior, medius, minimus, quartus, pectineus, 

 vastus externus, crura'us, vastus internus, biceps, obduratores externus 

 et internals, gemellus, ambieyis, soleus, tibialis anticus, extensor com- 

 munis digitorum, flexor perforatus et perforans rnedii, flexor perfo- 

 ratus, flexor profundus, popliteus, flexor brevis hallucis, flexor brevis 

 halhicis secundus, flexor brevis indicis, extensor hallucis, extensor 

 hallucis secundus, abductor indicis, extensor medii, abductor annularis, 

 are all as in Pcdamedea. 



Glutceus maximus. The representative of the postacetabular part 

 of this muscle found by us in Palamedea is absent. 



Femoro-caudal. There was only a tendon of origin : the insertion 

 in the tail was fleshy. 



Accessory femoro-caudal. This muscle, absent in Pcdamedea, is 

 present in Ohauna chavaria. Garrod states that it is present also 

 in C. derbiana. 



Semitendinosus. The accessory is larger than in Palamedea. 

 The tendon from the two heads joins the inner head of the 

 gastrocnemius, not the middle as in Palamedea. 



Semimemhranosus. The tendon of this, after receiving a slip from 

 the tendon of the semitendinosus as in Palamedea, runs into the 

 tibia between the inner head of the gastrocnemius and the accessory 

 semitendinosus. 



Adductors. There is not so great a difference in size between the 

 two adductors as in Palamedea. The origin of the deeper adductor 

 extends also to the end of the pubis. As in Palamedea, one set of 

 the fibres are inserted to the femur; the other set join, not the 

 middle head of the gastrocnemius, but the accessorj^ semitendinosus. 



Gastrocnemius. The outer head is as in Palamedea. The middle 

 head is slender, but is quite distinct from the accessory semitendi- 

 nosus ; it arises tendinously from the intercondylar notch and it 

 joins the outer head of the gastrocnemius halfway down the leg. 

 The inner or tibial head arises from the internal condyle of the 

 femur in addition to the origin found in Palamedea, 



