164 
PROEESSOR A. MACALISTER ON THE 
than to the last. There were two peronsei, longus and brevis, a two-headed gastrocnemius, 
a flexor hallucis double the size of the flexor digitorum, and a very small tibialis posticus. 
The tendons of the flexor hallucis and digitorum appeared to blend inseparably. 
As I wish to make this paper a simple record of anatomical facts, I forbear to make 
any comments on the dissections given above ; but they will doubtlessly suggest many 
interesting lines of thought. The comparison between Bird and Bat myology, between 
the muscles of the Bats and those of other flying mammals, and the relations of the 
anatomical structure of the Bat’s fore limb with its method of flight, are all fertile 
subjects for study, while the importance of the bearing of the displaced hind-limb 
muscles in the Bat on serial homology cannot be overrated. 
Explanation of the Plates. 
Fig. 1. 
PLATE XIII. 
Cutaneous muscles of Eleutherura marginota , dorsal aspect. 
a. occipito-pollicalis. d. femoro-cutaneus. 
b. dorsi patagialis. e. ischio-cutaneus. 
c. pubo-cutaneus. 
Fig. 2. Posterior scalp-muscles of Megaderma lyra. 
a. occipito-pollicalis. d. occipito-frontalis, hinder belly. 
b. retrahens aurem superior. e. splenius capitis. 
c. retrahens inferior. 
Fig. 3. Facial muscles of Macroglossus minimus. 
a. occipito-frontalis. g. orbicularis oris. 
b. procerus nasi. h. zygomaticus. 
c. dilator naris. i. buccinator. • 
d. orbicularis palpebrarum. j. depressor labii inferioris. 
e. attrahens aurem. Jc. masseter. 
f. levator labii superioris. 1. parotid gland. 
Fig. 4. Cutaneous muscles of Eleutherura marginata, lateral aspect. 
a. occipito-pollicalis. 
b. platysma superior. 
c. platysma medius. 
Fig. 5. Facial muscles of Megaderma lyra. 
a. occipito-pollicalis. 
spinal accessory nerve, 
sterno-mastoid. 
masseter. 
b. 
c. 
d. 
e. 
/• 
g- 
auriculo-angularis. 
attrahens aurem. 
frontalis. 
d. platysma inferior. 
e. pectoralis major. 
h. orbicularis palpebrarum. 
i. levator labii superioris. 
j. levator alse nasi. 
k. orbicularis oris. 
l. depressor anguli oris. 
m. procerus nasi. 
n. nose-leaf. 
