18 



MR. E. J. SIDEBOTHAM ON THE 



[Jan. 20, 



Abductor indicis, from outer side of base of metatarsal of great 

 toe to inner side of first phalanx of index. 



Abductor poUicis. — Large, arising from tuberosity of scaphoid ; 

 inserted into inner side of first phalanx of poUex. 



Intermediate layer. — Each consists of two bellies, which are more 

 or less connected and inserted into bases of first phalanges. 



Fig. 5. 



G.Q 



G.Ma 



r.i: 



G.E 



Myology of Water-Opossum. 



G.Me., gluteus medius ; G.Mi., gluteus minimus ; G. Q., gluteus quartus ; Q.E., 

 quadriceps extensor; .S'c, subcrureus ; Py., pyrifovmis ; O/., obturator 

 internus ; Q.F., quadratus femoris ; P. & /., psoas and iliacus ; G.Ma., 

 gluteus magnus; A.B., adductor brevis ; P., pectineus ; V.E., vastus 

 externus ; V.I., vastus internus ; A.L., adductor longua ; A.M., adductor 

 magnus; G.I., gastrocnemius internus; G.E., gastrocnemius externus; 

 P.Qi.JD., peroneus quinti digiti ; Pop., popliteus. 



Flexor brevis minimi digiti. — Large, arising from base of meta- 

 carpal of minimus. 



Flexor brevis annularis, — Arises from ridge on cuboid by a narrow 

 tendon. 



Flexor medii. — Inner part is connected with flexor indicis. 



Fexor indicis. — Arises from cuneiform bones. 



Flexor polUcis. — Arises from scaphoid. 



Plantar Layer. — All arise from common tendon in sole. The 

 muscles to pollex and minimus are large, the others being very 

 small slips. The slij^s to pollex and index pass to outer side of 

 phalanges. The slip to the minimus passes to the inner side ; whilst 

 the annularis has two slips — one passing to the inner side, and the 

 other dividing, the greater part passing to outer side, whilst a small 

 portion goes to inner side. There is also a flexor brevis digitorum 

 which arises from os calcis. 



