Macalister— 
On the Anatomy of Aonyx. 
545 
ischii which joins the rest of the muscle beyond the inscription (which 
is as usual). This is inserted into the inner side of the tibia two-fifths 
from the top of the tibia. 
Gracilis arises from the whole symphysis, and is inserted into the 
upper third of the tibia. E-ectus femoris lies as usual between the 
vasti. The extensors of the knee are to the flexors as 1*00 : 1*31. 
Popliteus extends to the upper two-thirds of the tibia. The two 
heads of the gastrocnemius are as usual, the external joined to the plan- 
taris, and neither has a fabella. Plantar is arises from the outer condyle 
and passes over the back of the os calcis, their fleshy flbres become 
mixed up with the tendinous fibres, and its tendons are inserted into the 
five toes. 
Soleus arises by a thin flat tendon from the head of the fibula ; at the 
lower third of the leg it becomes fleshy, and is inserted into the 
€s calcis. 
The flexor digitorum longus and flexor hallucis are fused at their 
insertion, and send tendons to all the toes. 
Tibialis posticus is tibio fibular in origin and scaphoid in insertion. 
There is a well-marked accessorius which arises from the outer side of 
the OS calcis, and is inserted into the tendons of the flexors digitorum 
and hallucis. 
The tibialis anticus has but one tibial head, and was inserted into 
the metacarpal bone of the hallux. The extensor hallucis has a fibular 
origin, into aud is inserted the aponeurosis of the first phalanx of the 
hallux. The extensor digitorum longus arises from the outer condyle 
of the femur by a strong tendon ^ it splits at once into four tendons 
which are inserted into the four outer toes. 
The peronei (longus, brevis, and quinti) were as usual ; the pero- 
neus longus has an origin from the external lateral ligament as well as 
from the head of the fibula; it passes through a separate groove behind 
the malleolus. 
The extensor brevis digitorum arises from the astragalus, and has 
four tendons to the four inner toes. The abductor ossis metatarsi minimi 
digiti is large, and the interossei are bicipital abductors of the index, 
medius and annularis, one headed adductors of index, medius annu- 
laris and minimus. 
There are separate abductors for the hallux and minimus, a flexor 
brevis minimi digiti and an adductor hallucis ; the tendons for the third, 
fourth, and fifth digits have accessory lumbricales. 
The following notes of the visceral anatomy of the animal are 
worthy of tabulation : — 
The Stomach was simple. The cardiac pouch rugose with scat- 
tered glands. The pyloric end of the stomach was smooth, beset with 
numerous adherent crystals. The bileduct opens into the duodenum an 
inch below the pylorus. There were no parasites in the alimentary canal. 
The length of the intestinal canal is 9 ft. 8 in. There is no ccecum, nor 
anal glands. The liver is seven lobed as usual in carnivora, with the 
two laterals small, the left being more detached than the right. The gall 
