Lettering for All Figures of this Plate.

acs, ahl, ahp, asl, coraco-scapular, humerale laterale, humerale posticum, and scapulare laterale externum heads of the anconæus muscle; b, coraco-antebrachialis (biceps); c, coracoid; cbb, coraco-brachialis; cc, costo-coracoideus; Cl, clavicle; cssp, collo-scapularis superficialis (levator scapulæ superficialis); cst, capiti-sternalis (sterno-mastoideus); cthspr, collo-thoraci-scapularis profundus (levator scapulæ and serratus profundus); cu, dorso-scapularis (cucullaris); dh, dorso-humeralis (latissimus dorsi); dsi, deltoides scapularis inferior; dss, dorsalis scapulæ (deltoides scapularis superior); Ec, epicoracoid; Est, episternum; esthy, episterno-hyoideus; H, humerus; hai, humero-antebrachialis inferior (brachialis inferior); hr, humero-radialis; p, pectoralis; PL, processus lateralis humeri; PM, processus medialis humeri; R, radius; rh, rhomboideus; S, scapula; sbsc, subscapularis; shpr, scapulo-humeralis profundus; spc, supra-coraco-scapularis; sphc, sphincter colli; SpS, spina scapulæ; SS, suprascapulare; St, sternum; Sta, anterior part of sternum; Stp, posterior part of sternum; thssp, thoraci-scapularis superficialis (serratus superficialis); U, ulna; V₅, V₆, 5th and 6th vertebræ.

Nerves Shown in this Plate.

3a.thoracicus VII.
7.posterior branch of the thoracicus superior VII for the collo-thoraci-suprascapularis profundus and rhomboideus muscles.
7a.proximal.
7b.distal thoracicus superior VII.
10a.thoracicus inferior.
12.supra-coracoideus.
15.integumental, (13 and 14), muscular branch of the supra-coracoideus.
19.pectoralis.
21.brachialis longus inferior.
29b.teres major.
31.dorsalis scapulæ (posterior).
32.cutaneus brachii and antebrachii superior lateralis.
32a.humero-radialis.
33.deltoides inferior, (25 and 42), cutaneus brachii and antebrachii medialis.

Plate II.

Figs. 1-4. Muscles of the Forearm of the Alligator.

(From Bronn.)

Figs. 5-7. (From Bronn after Rathke.)

Fig. 1.1, humero-radialis longus (supinator longus); 2, humero-radialis medialis(flexor carpi radialis); 3, carpo-phalangei I digiti V; 4, carpo-phalangei(flexor digitorum communis brevis); 5, humero-ulno-phalangei (flexordigitorum communis profundus); 6, humero-radialis longus; s. flexor carpiulnaris; 7, pisiforme-phalangeus primus digiti V; 8, carpo-phalangeus I;9, carpo-metacarpalis I.
Fig. 2.1-5 as in Fig. 1; a, humero-carpi-radialis; b, humero-metacarpalis III,IV, V (extensor digitorum longus); c, humero-carpi-ulnaris; d, carpo-phalangei(extensor-digitorum brevis).
Fig. 3.a, b, humero-ulno-phalangei (flexor digitorum communis profundus).
Fig. 4.a, ulno-carpi-radialis; b, ulna; c, humero-ulnaris-lateralis (flexor carpiulnaris); d, humero-radialis brevis (supinator brevis).
Fig. 5.Head, Neck, and a Part of the Body of a CrocodilusVulgaris. (Ventral View).
a, lower jaw; b, upper jaw; c, arch of palate; d, fold of palate; h,pterygoideus internus (Rathke); i, pterygoideus externus (Rathke);k, longus colli (Rathke); m, rectus capitis anticus major (Rathke);n, sterno-mastoideus (Rathke); o, levator scapulæ (Rathke); p, scalenus(Rathke).
Fig. 6. Part of a Similar Preparation of C. Rhombifer.
a, the hindermost of the superior maxillary teeth; b, lower jaw; c,wings of palate; d, pterygoid; e, quadrate; g, intertransversalis (Rathke);h, trachelomastoideus (Rathke); i, levator scapulæ (Rathke); k, longuscolli (Rathke); m, pterygoideus externus (Rathke); n, rectus capitisanticus major (Rathke).
Fig. 7. A Part of the Head and Neck of Alligator Lucius.
a, pterygoideus externus (Rathke); b, digastricus (Rathke); c, rectuscapitis anticus major (Rathke); d, sterno-mastoideus, anterior belly(Rathke); e, sterno-mastoideus, posterior belly (Rathke); f, levatorscapulæ (Rathke); g, cervicalis adscendens (Rathke); h, longus colli(Rathke); i, intertransversalis (Rathke); k, trachelomastoideus (Rathke);l, biventer cervicis (Rathke); m, splenius colli (Rathke); n, spleniuscapitis (Rathke).