1901.] AN"ATOMY or OHRYSOOHLOEIS TKEVELTANI, 31 



wrist ; below that three fibrous tendons pass to the niedius, annu- 

 laris, and minimus in one specimen, in the other the shp to the 

 minimus is absent. 



The pronator quadratus, lumbricales, and palm-muscles are 

 absent. 



The palmaris longus is absent in one specimen, present in an- 

 other. 



Musdes of the Hind Limb. 



The following points which were either unnoticed by Dobsou or 

 differ from his descriptions may be called attention to : — 



The graciUs is a single muscle. 



The adductor longus is only separable from the adductor mass 

 just above the internal condyle of the femur. The rest of the 

 mass cannot be satisfactorily divided. 



The pectineus is supplied entirely by the anterior cnu'al nerve. 



The caudo-femoralis (agitator caudse) lies as usual caudal to the 

 ectogluteus ; it rises from the caudal vertebne by a narrow tendon 

 deep to the origin of the semitendinosus, and is inserted into the 

 femur lower down than the insertion of the ectogluteus, with which 

 it is closely connected. (In the K. C. S. specimen it is indistin- 

 guishable.) 



The meso- and ento-glutei cannot be satisfactorily separated 

 one from another. 



There is no gluteus ventralis (scausorius). 



The sartorius and tensor fasciae feraoris are absent. 



The biceps femoris runs from the tuber ischii to the fascia on 

 the outer side of the leg. There is no bicipiti accessorius (tenuis- 

 simus). 



The presemimembranosus is quite distinct from the semi- 

 membranosus and adductor mass, the femoral artery passes between 

 it and the latter. 



The peroneus longiis rises from the head of the fibula. 



The peroueus brevis rises from the upper third of the shaft of 

 the fibula. 



The peroneus quinti digiti is inseparable from the peroneus 

 brevis in the leg ; this is probably owing to the fibula being a dis- 

 tinct bone only in the upper part of the leg. On the dorsum of 

 the foot the tendon separates from that of the peroneus brevis and 

 runs down to the distal phalanx of the minimus, of which it is the 

 only extenser. 



The extensor longus digitorum goes only to the annularis in all 

 three. 



The extensor brevis digitorum is not so large as in Dobson's 

 specimens ; it runs to the index and medius in one animal, but in 

 the other two it goes to the annularis as well. There is thus in 

 one specimen a great economy of extensor tendons, no toe having 

 more than one — the hallux has the extensor hallucis, the index and 

 medius the extensor brevis digitorum, the annularis the extensor 

 longus digitorum, and the minimus the peroneus quinti digiti. 



