Stoweli., Nerves in the Domestic Cat. 303 



vessels (ramuli of the profund artery and veins ( ?)); it lies 

 upon the ental surface of the muscle 20-30 mm., then pene- 

 trates its substance as two terminal ramuli (Fig. M. semi- 

 ten.); (<") the third ramus crosses the ectal surface of the 

 vessels named, peripherad of which, or 20 mm. from its 

 origin, it enters the M. semi-membranosus as two terminal 

 ramuli (Fig. M. semi-mem.). The fourth branch is a slender 

 filament, about the middle of the thigh, which is given to the 

 distal half of a ribband muscle (Fig. M?) 3 mm. in width, 

 which lies in the fascia upon the ental surface of the M. 

 biceps, which muscle it crosses obliquely — this muscle has 

 its origin just cephalad of the M. pyriformis upon the dia- 

 pophysis of the first caudal vertebra, lies entad of the M. 

 pyriformis and the M. biceps, and is inserted in the aponeu- 

 rotic fascia of the mesal border of the biceps about midway 

 between knee and ankle; it is readily separable from the 

 biceps; the total length in a cat of medium size is about 90 

 mm.; the proximal end of the muscle is innerved by a ramu- 

 lus whose roots are traceable to the third sacral, the first 

 coccygeal and the pudic nerves. The fifth branch innerves 

 the distal third of the M. biceps (M. bi.); it is given oft' 40 

 mm. peripherad of the trochanter, just centrad of the short 

 saphenous nerve. 



N. CUTANEUS INTERNUS. 



The short saphenous nerve (Saph. br. ) has its ectal origin 

 just centrad of the division of the sciatic trunk into the pop- 

 liteal and the peroneal nervef. It crosses the popliteal space 

 embedded in the adipose which occupies this region, is ectad 

 of the artery and entad of the M. biceps; it lies apposed to 

 the artery upon the dorsal surface of the biceps and entad of 

 the ectal fascia. Its filaments terminate in the integument 

 over the caudal side of the foot and the fifth toe. 



The great sciatic trunk divides into two unequal nerves, 

 the caudal and smaller, N. peroneus, and the cephalic, laiger 

 nerve, N. popliteus. 



