THE :\IAXl)ri3L'EAR AND HYOID MUSCLES OE MAMMALS. 641 
A^oit (1909). — “Das PrimordiakTaniuiii des Kaniiicdiens imter Beriick- 
sicditigung der Deckkiiocdieii,’' ‘ Aiiat. Hefte/ Bd. xxxviii, Heft 110. 
Willems (1911). — “ Les noyaiix masticateur et meseneephali(|ue dii 
trigemineau chez le lainiiY ‘ Le Nevrexe,’ vol. xii. 
A indie and Parsons (1899). — “On the Myology of the Edentata,*’ 
‘ Proc. Zool. Soc.' 
Zuckerkandl (1881). — “ Znr Morphologie des M. tensor tympani," 
‘ Archly f. Ohrenlieilkimde,' Bd. xx. 
EXPLAXATION OF JILATES 38-45^ 
Illustrating Dr. F. H. Edge'>yortli’s paper On tlie Develop- 
ment and Alorpliology of the ^Mandibular and Hyoid 
Muscles of Mammals.’’ 
ABBREyiATIONS. 
Ala temp. Ala temporalis, alisplien. h. Alisplienoid bone. An. hy. 
gloss. A' styl. gloss. Aiilage of the hyo-glossns and stylo-glossus muscles. 
An. p)al. A p>ty. I/. Anlage of palate and pterygoid bones. Aa. of 
interinand. m. Anlage of intermandibularis muscle. An. of mast, ms 
Anlage- of masticatory muscles. An. par. h. Anlage of parietal bone. 
An. Spli. sup. A platys. Anlage of sphincter superficialis and platysma 
muscles. An. stop. A hy. v. cons. Anlage of stapedius and hyoid 
yentral constrictor. An. tens. pal. A tens. ty. Anlage of tensor veil 
palatini and tensor tympani muscles. An. zygo. A mass. Anlage of 
zygomatico-mandibularis and masseter muscles. Annulus m. Annulus 
muscle. a7it. dig. on. Anterior digastric muscle, and. cap. Auditory 
capsule, aud. epith. Epithelium of auditory vesicle, aur. mand. m. 
Auriculo-mandibularis muscle, aur. temp. n. Auriculo-temporal nerve. 
hasihr. c. Basibranchial cartilage. 1 hr. bar. First branchial ]>ar. hr. hy. m. 
Branchio-hyoid muscle s. ceratodiyoideus s. inter-hyoideus. hr. IX to 
g. s. p. Branch of ninth nerve to great superficial petrosal nerve, hucc. m. 
Buccinator muscle, buccal n. Buccal nerve, chorda ty. Chorda tym- 
pani nerve, com. br. IX to VII. Communicating branch of ninth nerve 
to seventh nerve, cons. ph. m. Constrictor pharyngis muscle, crista par. 
Crista parotica. cut. br. mylohy. oi. Cutaneous branch of the mylohyoid 
nerve, dep. auris m. Depressor auris muscle, dep. mand. ant. m. Depres- 
sor mandibuhe anterior muscle, detrah. mand. m. Detrahers mandibuhe 
muscle. E. A. M. External auditory meatus, ext. pty. m. External 
pterygoid muscle, ext. rect.. m. External rectus muscle of eye. Eust.tb. 
Eustachian tube. Gass. g. Gasserian ganglion, gen. gloss, m. Genio- 
