480 DR. A. MACAHSTER ON GLOBIOCEPHALUS SVINEVAL. [May 9, 



broad palato-pharyngeus muscle, which arose from the posterior 

 border of the palate bones opposite the median line of the velum 

 and above and behind the palato-glossus; from this point the muscles 

 of both sides diverged, and, passing beneath or on the inner aspect 

 of the superior constrictor, were inserted into the vertebral edge of 

 the thyroid cartilage. There was no trace of a tonsil ; nor anteriorly 

 could any rudiment of a salivary gland be found, even though I 

 searched in the locality corresponding to the place where Dr. Carte 

 and I found a rudimental parotid in Balcenoptera rostrata. 



In the dissection of the neck I found the following muscles con- 

 nected with the hyoid bone and larynx : — 1. Sterno-hyoid, arose from 

 the upper edge of the sternum and ran to the body of the hyoid bone. 

 2. Sterno-thyroid, from the back of the sternal extremity of the car- 

 tilage of the first rib to an angular line on the thyroid cartilage ; in 

 direction it ran upwards and inwards, and it overlapped the common 

 carotid artery. This muscle was not found by Dr. Carte and my- 

 self in Bal<s7ioptera ; its costal origin is interesting, as a correspond- 

 ing attachment is sometimes its sole origin in Man, as described by 

 Hallett and others, 3. Thyro-hyoid, from above the oblique line 

 on the ala of ihe thyroid cartilage to the posterior border of the base 

 of the OS hyoides. 4. Crico-thyroid, quadrilateral in shape, eutirel}' 

 covered by the sterno-thyroid, passed from the front of the cricoid 

 cartilage upwards and forwards* to the posterior edge of the thyroid. 

 5. Hyo-keratic {Kepas, cornu), probably a modified hyo-glossus, arose 

 from the anterior edge of the body of the hyoid bone, and was in- 

 serted into the hinder and upper edges of the stylo-hyoid cornu ; 

 this muscle was short, broad, and thick. 6. Stylo-keratic, arose 

 from the squamous bones, external to the articulation between the 

 stylo-hyoid cornu and the base of the skull ; from this point it ran 

 downwards and backwards to be inserted into the upper third of the 

 stylo-hyoidean cornu. 7. Stylo-hyoid, a piriform muscle remote 

 from the last named, arose from the squamous bone internal to the 

 afore-mentioned articulation, and was inserted into the posterior or 

 great cornu of the hyoid bone ; its origin was placed on a plane in 

 front of the next muscle, stylo-pharyngeus ; its belly crossed over 

 the stylo-hyoid bone, and its tendinous insertion crossed the external 

 carotid artery and the lingual nerve. 8. Stylo-pharyngeus, arose from 

 that portion of the squamous bone behind the styloid articulation, 

 posterior to the last described, and was inserted into the superior 

 edge of the thyroid cartilage, upon which there was an oblique ridge 

 for its insertion. This muscle was narrow at its origin, and over- 

 lapped in its course the glosso-pharyngeal nerve, internal and external 

 carotid arteries, and the rete mirabile formed by the former vessel ; 

 its insertion was superficial to the middle constrictor of the pharynx, 

 and was separated from the attachment of the sterno-thyroid by a 

 small part of the origin of the thyro-hyoid muscle. For these 

 muscles I have preserved the name stylo, although they have in 

 reality no true styloid attachment. 9. Basio-thyro-hyoid, arose 



* All iliese positions have reference to the animal as placed resting on its ven- 

 tral aspect. 



