290 The Nerves and Muscles of the Leg 
areas. In 33 out of 77 instances two such rami were found (Plate VII, 
Fig. 2) ; in 9, three; in 2, four; and in 2, five. 
Perineal branches.—As a rule the perineal rami arise from a single 
trunk which branches from the posterior cutaneous nerve (70 out of 94 
instances) or arises separately from the plexus and runs a parallel inde- 
TABLE XIII. 
#| ge | ge] ; 
3 | a 35 | Gus Cree Origin of N. Perinealis. Verte 
218 | 1B} Wily 1R|) 183 XERIV i. EXONS PXORGV iT XXVI, X XVII 11t, 51, 5s, 4e 
269 | We Me eB XSROV TRE XG VL) XXVII 12th rib, short 
395 B, ¥, R | B XX VI, XXVII | XX VIL 12t, 51, 4s, 4co 
607; W,M,L; B ? ? 12th rib, short 
649 | B,F,R| B XXVI, XXII XXVI, XXVII 12t, 41, 5s, 3co 
243 | W,M, L| CO | GRAV ERG VAT ROS VALET XXVII, XXVIII 12th rib, short 
S010 | Sa Hevlag |) aC) || eXOXeVaIe eXGXe Vala XoXo Val: XXVIII, XXVIII 12th rib, short 
282 | W, M, L Gl || EXOXS VAL PROXOValI XeXO VID XXVII, XXVIII 12t, 51, 6s, 2co 
218 | B, M, L | Cai XXVII, XXVIII XXVII, XXVIII lit, 51, 5s, 4co 
476 | B,M,R| C XXVII, XXVIII XOXO VILL, ROXG VAL 12th rib, short 
423 | B, M, R | Cc | XXXVI, XXVII XXVII, XXVIIT 11t, 51, 6t, 2co 
583 | W, M, L]} D | XOXO T, XEXGV AT ROX! Vil XXVII, XXVIII Normal 
405 | W, M, Bye) |XX Vil, XX VII, XXVIII XXVII, XXVIII ss 
B03) sake aD) | XexValy ROX VDE ok VET XXVII, XXVIII Us 
211 | B, M, | 1a) XOX Ve RXV IL, KON LEL XXVII, XXVIII te 
152 | B, F, L | iD) XXVIII, XXVIII ON Vi eV es 
547 B,M, L| E | XXVI, XXVII, XXVIII| XXVII, XXVIII ae 
108 | [gh Set Deals. 6A Bo. @-4"a8ap-e-4 a 11 | XXVII, XXVIII o* 
108 | B, F, R | B | XXVII, XXVITI | XXVII, XXVIII et 
612 | B, F,R | E XXVII, XXVIII | XXVIII, XXVIII 12t, 61, 5s, 3co 
282 | W,M,R F | XXVIII, XXIX XXVIII, X XIX 12t, 51, 6s, 2co 
42 | B, M, R. an XXXVI, XXVII, XXVIII | XXVII, XXVIII 13t, 51, 4s, 3co 
247| W,M, L| G | XXVIII, XXVIII, XXIX | XXVII, XXVIII, XXIX| 12t, 51, 6s,2co 
418| B,M, L| G | XXVI, XXVII| XXVII, XXVIII, XXIX| Normal 
pendent course (24 out of 94 instances). 
In the latter 
ease a small 
anastomosing twig usually passes from the perineal branch to the main 
trunk of the posterior cutaneous. A separate perineal branch occurs much 
more frequently in the unusual forms of plexus than in the usual, as 
shown by the above table. 
