Puate IV. (From Bronn, after Gadow.) 
Fic. 1. ALLIGATOR MISSISSIPPIENSIS. INNER SURFACE OF THE 
Petvic Recion, Lert Sipe. THE Pusis, IscHiuM, AND 
VERTEBRZ ARE CUT THROUGH THE MEDIAN PLANE, 
XXVIII, 28th VERTEBRA. 
Fic. 2. Hatreria Puncrata. 
Fic. 3. A. MISSISSIPPIENSIS. THE DEEPEST MUSCLES ON THE 
PLANTAR SURFACE OF THE Lert Hinp Foot. ROMAN 
NuMeErRALs IX-XII, SHort ToE MuscLeEs. 
Fic. 4. A. Mississipriensis. Lert LEG FROM THE POSTERO-MESIAL 
Aspect. THE PLANTAR FLEXOR MUSCULATURE IN SITU, 
AFTER REMOVAL OF THE GASTROCNEMIUS MUSCLE 
AND THE AssociATED Muscres. Roman 
NumErALs, VI-X, SHort Toe 
MUSCLEs. 
amb, ambiens; cap, ext, gastr, external head of gastrocnemius; cap, int, gastr, in- 
ternal head of gastrocnemius; cd, fm, caudali-femoralis; cd, il, fem, caudi-ilio- 
femoralis; ex, il, tb, extensor ilio-tibialis; ext, / (long), dig, extensor longus 
digitorum; jf, tb, ext, flexor tibialis externus; jl, tb, int, flexor tibialis internus; 
fm, tb, femoro-tibialis; 1, cd, ilio-caudalis; il, cost, ilio-costalis; il, fib, ilio- 
fibularis; il, fm (il, J), ilio-femoralis; il, s, cd, ilio-sacro-caudalis; is, cd, ischio- 
caudalis; is, f, ischio-femoralis; ob, ext, obliquus externus; pb, cd, pubi-caudalis; 
pb, is, 1b, pubi-ischio-tibialis; pb, tb, pubi-tibialis; peron, ant, peroneus an- 
terior; peron, post,‘ peroneus posterior; p, is, f, ext. pubi-ischio-femoralis 
externus; », is, f, int, pubi-ischio-femoralis internus; », is, f, post, pubi- 
ischio-femoralis posterior; gudr, 1b, quadratus lumborum; rect, rectus abdo- 
minis; ib, ant, tibialis anticus; tib, post, tibialis posticus; trans, transversus 
abdominis; tr, per, transversus perinei; m, post, il, posterior border of ilium; 
ob, foramen in pubis for the obturator nerve; u, il, ilium; 0, és, ischium; 
vu, pb, pubis; o, cl, cloacal bone; pr, /, pb, lateral process of pubis; pr, ir, trans- 
verse process; sp, ant, il, anterior spine of ilium; Sy, », symphysis pubis; 
Sy, is, symphysis of ischium; #b, is, tubercle of ischium. 
