. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. 60^ THE MUSCLES. 12. M. lateralis uarium. (Ecker), (Fig. 54 In). Zenker, m. intermaxillari» lateralis.—Klein, in. imsalis inferior.— Dugès, sus-maxillo-pré-nasal, n. 2. This small muscle occupies the space between the anterior portion of the maxillary bone and the ascending- process of the premaxillary bone. It arises from the maxillary, and ascends obliquely forwards to be inserted into the outer border of the ascending- process of the premaxillary bone. It is antagonistic to the foregoing-. A third muscle is described by Dug
. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. 60^ THE MUSCLES. 12. M. lateralis uarium. (Ecker), (Fig. 54 In). Zenker, m. intermaxillari» lateralis.—Klein, in. imsalis inferior.— Dugès, sus-maxillo-pré-nasal, n. 2. This small muscle occupies the space between the anterior portion of the maxillary bone and the ascending- process of the premaxillary bone. It arises from the maxillary, and ascends obliquely forwards to be inserted into the outer border of the ascending- process of the premaxillary bone. It is antagonistic to the foregoing-. A third muscle is described by Dugès as sus-maxUlo-post-nmal, n. 3 {iiasalis exteruus, Klein) ; according to him it passes from the Ijfoc. nasalis of the maxillary bone to the outer border of the nasal opening", which it widens. According- to Klein (/. c, p. 9), this muscle in R. ieinporavia runs to the upper border of the maxillary bone beneath the lower eyelid, and is long- and narrow. I have, however, never been able to find muscular fibre in this situation. III. Muscles of the Lower Muscles of the back and shoulder, r M. cucuUaris. dm,dm M. depressor maxillae, arising from the fascia dorsalis. On the right side it is cut through and reflected. /d Fascia dorsalis. /d' Same cut near the spinous processes. i II. infraspinatus. M. levator anguli scapulae. M. latissimus dorsi. r M. retrahens scapulae. sc 51. sternocleidoniaatoideus. 1B:)M. dej^ressor viax'il- lae inferioris, Cams, Zenker (Fig-s. SS, 56, 6s ). Cuvier, , II, 141, digas- tricns.—Dugès, sus-occipito- dorso-angulaire, 32. This is a strong, trian- gular musclC; wide above, pointed below. It is placed between the head and the shoulder-blade. It arises in two portions; the g-reater, from the fascia dorsalis [fd, ), covers the scapula, and passes inwards and back- wards over the muscles of the back ; anteriorly it passes over the m. iemporalis and is attached to the fronto- parietal and squamosal, being- continued to
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