Mackintosh — Notes on the Myology of the Coati-MoncU, ^-c. 49 



died duriug the summer of 1873, were forwarded for examination to 

 Professor Macalister, who kindly gave me the opportunity of assisting 

 him in dissecting them. 



"VVe noticed the following points of general anatomy : — 



There was no recessus pharyngeus, a rudimental bursa pharyngei, 

 small Eustachian tubes, and black lymphatic glands in N. narica ; in N. 

 fusca the platysma is very strong, running upwards and inwards to 

 the middle line ; Martesfoina resembles JSf. narica in having black lymph 

 glands. 



The facial muscles in JY. narica are ; — 



Orbicularis palpebrarum simple, arising from the definite ocular 

 tendon; levator labii superioris large, arising from the maxilla in front 

 of the orbit and running downwards and forwards to be inserted ten- 

 dinously into the upper lip ; levator alse nasi, a very large muscle aris- 

 ing just above the infra-orbital foramen, and running forwards under- 

 neath the last-named muscle to be inserted by an expanding tendon 

 into the dermis of the end of the elongated snout, which it elevates 

 and lateralise's ; its tendon is slightly united to levator labii superioris, 

 and the large infra-orbital nerve runs parallel to and underneath it ; 

 levator anguli oris consists of vertical fibres attached underneath the 

 eye; depressor also nasi, from the alveolus vertically upwards to the 

 sides of the alar cartilage ; retrahens aurem, very large, with a detached 

 slip from the fascia of the middle line of the neck ; transversus auri- 

 culse is also large, and atrahens aurem is a strong round bundle of 

 fibres from the zygoma. The tongue has the usual muscles. 



In N. fusca levator alse nasi and levator labii superioris form a single 

 muscle ; retractor nasi is enormously developed; there is a double retra- 

 hens aurem, a single z5^gomaticus ; mandibulo-auricularis is strong ; 

 there is a transversus depressor auris, and a normal masseter. 



The muscles of the head and trunk in N. narica are ; — 



Eectus capitis anticus major arising from the five upper cervical 

 vertebrae, and inserted directly into the bulla tympani ; rectus capitis 

 anticus minor is very small, arising from the atlas, and inserted as 

 usual ; digastric, arising from the post-tympanic and paroccipital pro- 

 cesses, covers the bulla tympani, has an inscription (which is long in 

 N. fusca), and is inserted into the posterior third of the mandibular 

 ramus. The parts of longus colli are not separable. Scalenus anticus 

 IS small and norma;l ; scalenus posticus extends from the four lower 

 cervical transverse processes to the eight upper ribs. The sternohyoid, 

 sternothyroid, thyrohyoid, and cricothyroid are as usual. In iV". fusca, 

 sternocostalis arises from the two upper sternebers and is inserted into 

 the first rib ; the brachial artery overlies and the brachial nerve 

 underlies the supracondyloid foramen; the muscles of the back of the 

 neck are of the ordinary carnivore type ; scalenus posticus runs from 

 the third cervical vertebra to the second, third, fourth, fifth, and sixth 

 ribs ; scalenus medius extends from the sixth cervical vertebra to the 

 first rib. None of these muscles were examined in the Martin. 



K. I. A. PROC, SEK. n., VOL. II., SCIENCE. H 



