408 Harris Hawthorne Wilder, 



separatiiig the übers of the two adjacent muscles, and ofl'eriug an 

 insertion to both. There is also mach Variation in the number of 

 fibers which come to it frora the pubotibialis, as in some cases nearly 

 a third of the entire muscle is involved, while in others bnt a few 

 fibers insert into it, and these near its distal end. In one case 

 noted a small slip from M. puboischiofemoralis externus was inserted 

 into the proximal end of* the tendon, mingled with the fibers of the 

 pnboischiotibialis ; this peculiarity was unilateral, the other side being 

 normal. In all cases the tendon, having served as an insertion, 

 both at its proximal end and along its sides, for a variable number 

 of fibers from M. puboischiotibialis and one or two others, becomes 

 inserted into the inner aspect of the tibia, near its proximal end. 



The posterior portion of the puboischiotibialis has nothing to 

 do with the above tendon, but is continued as a fleshy mass, 

 wrapped partly around the leg, and reinforced by auxiliary fibers 

 from the transverse raphe. This and the former make separate 

 insertions; the original fibers inserting along the shaft of the tibia, 

 distal to the insertion of the tendon, while the auxiliary fibers 

 pass farther aronnd the leg to the fibular side and insert into a 

 thin fascia, which overlies the plantar fascia and blends in part 

 with it. 



M. puboischiofemoralis externus (jpife). This muscle 

 arises from along the entire median line of the ventral surface of 

 the puboischiadic plate, from which its fibers converge to their 

 insertion in the femur in such a way that the muscle is practically 

 coincident in outline with the plate itself. The muscles of the two 

 sides, taken together, thus form a fairly thick sheet that Covers 

 the entire ventral aspect of the puboischium. Of this sheet a little 

 more than the posterior third is covered by the preceding muscle r 

 Mi puboischiotibialis, the remainder is superficial. The muscle is 

 readily divisible into a larger anterior and a smaller posterior 

 portion, differing both in origin and the direction of their fibers; 

 and the first of these may be further subdivided, though not very 

 definitely, into three bundles; a) anterior superficial, b) posterior 

 superficial, and c) anterior deep. Of these portions a) is the most 

 anterior and arises from the median line of the plate for about its 

 anterior half, inserting into the crista ventralis of the femur and 

 the distal Prolongation of this process. Portion b) is a narrow 

 slip, arising from the median line in the ischiadic region and 

 inserting into the crista ventralis proximal to the insertion of a) r 



