Knott — On Muscular Anomalies. 639 



according to Krause. In one case I found this muscle arise from the 

 back of the head of the fibula. An accessory head from the ligament 

 of Winslow I have found in a considerable proportion of cases, and 

 one from the planum popliteum of femur has been noticed in another 

 instance. The latter was of considerable size (about one-third that of 

 the normal head of origin). 



Plantaris minor (Krause) ; popliteus superior s. minor (Calori.) — 

 "When the accessory head of the plantaris is completely separate, these 

 distinctive names have been applied to it. 



Soleus. — The soleal lamina of the tendo Achillis I once found quite 

 distinct down to its insertion. A bi-laminar fibular head was noted 

 in three instances, the lower lamina being the smaller in each case. 



Tensor fascice plantaris. — A muscular lamina of about three-quarters 

 of an inch in breadth, arising from the linea poplitea of the tibia below 

 the soleal attachment, and passing down, superficial to the inner annular 

 ligament, to be inserted into the plantar fascia. Of this muscle I met 

 with one example. In another subject a muscle of similar origin was 

 inserted into the ligamentum lanciniatum. 



Poplitceus. — In one case I found a small sesamoid bone in the ten- 

 don of the poplitaeuSj and its development was bilateral. A double 

 muscle once. 



Poplitceus minor. — An accessory bundle of fibres arising from 

 the outer tendon of the gastrocnemius. Pound present on two 

 occasions. 



Flexor digitorum longus. — The astonishing irregularity of the ar- 

 rangement of the tendons of this muscle, and of its connexion with other 

 tendons, has been conclusively shown by Professor Turner ; also by 

 the tabulated observations of F. E. Schultze, Wood, &c. As my own 

 observations closely agree with those of the distinguished anatomists 

 whom I have named, I did not tabulate them. 



Flexor digitoruyn longus accessorius . — One example of this muscle I 

 found arising between the lower part of the usual flexor and the tibialis 

 posticus, and, passing into the sole of the foot, divided into two slips, 

 which joined the tendons of second and third toes. In another case it 

 assumed the form of a 



Flexor digiti secundi proprius. 



Flexor digiti minimi accessorius. — A muscular slip arising from the 

 under surface of the tendon of the common flexor before its division, 

 and going to the little toe. Its tendon is pierced in the thecal sheath 

 by the corresponding tendon of the flexor brevis digitorum. 



Tibialis posticus. — This muscle I have seldom found to present 

 variations of striking interest. The tendon of insertion I have noticed 

 in three instances to send a well-marked slip to the inner tendon of the 

 flexor brevis digitorum. An insertion into the cuboid bone has been 

 described as an anomaly, but this will be found to be present in the 

 majority of cases, if searched for with sufficient care. 



Flexor hallucis longus. — The origin of this muscle I have found 

 very constant. The slip given from the tendon of this muscle to that 



