498 



Mr. J. Wood on Variations in Human Myology, [June 18, 



doubled or split along nearly its whole length into a condyloid z-udi coronoid 

 muscle, the latter being inserted higher than, and external to, the former 

 part. In No. 1 the coronoid origin was a rounded tendon. In the female 

 (No. 35) the two parts were distinct throughout, and connected only by a 

 small slip at their insertion. In No. 31 the condyloid origin of the pro- 

 nator was the only one present. The occasional occurrence of a double 

 pronator has been noticed by Albinus, Soemmerring, Theile, and Meckel. 

 Mr. Macalister has lately called attention to this formation as an evidence 

 of a second or accessory embryonic germ, represented by the coronoid 

 origin, and homologous with the tibial head of the soleus (Journal of 

 Anat. and Phys. Nov. 1867). The coronoid origin is not found in the lower 

 Mammalia, and is present only in the higher Quadrumana. It was found 

 by the author large and well marked in the Orang, arising by a strong, 

 broad tendon, common to it, the flexor carpi radialis, and the flexor sub- 

 limis digitorum, and giving off a slip to the separate flexor indicis, and 

 with the median nerve passing between it and the condyloid origin. In 

 the same animal there was no tibial origin whatever to the soleus. The 

 coronoid head of the pronator was not found by the author in the Bonnet- 

 Monkey. Dr. Humphry found it in the Chimpanzee disposed as in the 

 human subject. 



18. Fleccor sublimis digitorum. — In the left arm of a male (No. 4) was 

 an unusual fusiform muscular slip from the coronoid origin of this muscle, 

 ending in a long tendon which, passing under the annular ligament to the 

 palm, gave origin to the outer half of a bipenniform first lumbricalis 

 muscle. The inner head of the lumbrical arose from its usual place. 

 This abnormality was described in the arm of a negro in the author's paper 

 of 1865, the long tendon arising in that instance from the deep fibres of 

 the sublimis, along with a coronoid " accessorius ad flex. long, pollicis,''' 

 and was joined in the lower part of the forearm by a muscular slip from the 

 radius. In No. 7 the tendon to the middle digit was double. In Nos. 1 1 

 and 1 7, males, and in 20, 30, 32, 34, and 36, females (7 in all), the origin of 

 the flexor sublimis from the coronoid process was twofold, viz. : — one, fleshy, 

 from the upper part of the inner border of the process, and continuous with 

 the fibres of the condyloid and ligamentous origins ; and a second, flat, 

 tendinous, and riband-shaped, from the lower angle of the coronoid process — 

 the latter joining the fibres of the radial origin before these united with the 

 rest. In all but 2 this arrangement was on both sides. 



In 2 females (Nos. 19 and 22) the subHmis tendon to the httle finger 

 was absent. In the latter the perforated tendon was supplied by the fourth 

 lumbricalis muscle. This arrangement forms a contrasted instance to that 

 just mentioned, in which the first lumbricalis took origin from a tendon 

 supplied by the subhmis. In the left arm of the female (No. 20) a musculo- 

 tendinous shp was given off from the sublimis to the palmar fascia, in aid 

 of a very feeble palmaris longus. Such a slip has been found by Macalister 

 in Cebus capucinus. Ptosenmiiller has also described it in the human sub- 



