. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. MUSCLES OF THE SKIN. 119 sixth, and ninth will adduct towards this line. If we compare them with those of man (in whose case the second toe affords the central line), those of the first group must be regarded as mm. inter- oissei dorsales, of the latter as plant ares. Duges holds all these interossei (with the exception of the first, abductor brevis dig. 1) to be mm. interossei r/or,?fl/t^i'(metatarso-sus-phalangettiens, n. 210, 211, 212, 214, 215, 216, 218, 219). Those which I have described as flexores projjrii diffitornm, h
. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. MUSCLES OF THE SKIN. 119 sixth, and ninth will adduct towards this line. If we compare them with those of man (in whose case the second toe affords the central line), those of the first group must be regarded as mm. inter- oissei dorsales, of the latter as plant ares. Duges holds all these interossei (with the exception of the first, abductor brevis dig. 1) to be mm. interossei r/or,?fl/t^i'(metatarso-sus-phalangettiens, n. 210, 211, 212, 214, 215, 216, 218, 219). Those which I have described as flexores projjrii diffitornm, he regards as interossei volares. V. MUSCLES OF THE SKIN. 196. 31. cutaneus pectoris (Fig. 95 cp). Duges, abdomino-guttural, u. 53.—Klein, abdomino-cutaneus.—Zenker, subcutaneus pectoris. This is an elongated quadrangular muscle, attached by its hinder margin to the side of the xiphisternum, and to the superficial surface of the aponeurosis of the m. obliquiis externas. The fibres course forwards and Fit 95- slightly outwards to be inserted, at a very acute angle, into the skin : lying* between the two muscles and attached to them on either side is a thin fas- cia, which, together with the muscles and the sep- tum tJioracicum, assists in closing a triangular space between these structures and the deeper muscles. The thinness and trans- parency of this muscle render it especially suit- able for the investigation of nerve-temiinations ^. 197. M. cutaneus dorsi (Fig. 96 cd). Duges, pubio-dorso-cutane, n. 56.—Zenker, cutaneus iliacus. This muscle has a narrow origin in the space between the muscles ' Kolliker, Mikrosk. Anatomie, 1866, vol. II. i, p. 247 ; Reichert, Miiller's Archiv, 1851, p. 29, PI. I ; Kolliker, Untersuchungen iiber die letzten Endigungen der Nerven in den Muskeln des Frosches ; Leipzig, Engelmann, Pectoral region of Raita escuknla. cp M. cutaneus pectoris. p"' Port, abdominalis of the m. i) Please note that these images are extracted f
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