On the myology of the sciuromorphine and hystricomorphine rodents / by F.G. Parsons.
- Frederick Gymer Parsons
- Date:
- 1894
Licence: Public Domain Mark
Credit: On the myology of the sciuromorphine and hystricomorphine rodents / by F.G. Parsons. Source: Wellcome Collection.
Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.
19/48 page 267
![Lu the Octodontid® there are always four tendons to the digits and one to the thumb. There are also four luinbricales. In the Hystricid® no slip is sent to the thumb in IlystrLv and Sphingurus, but Mivart describes the muscle as dividing into live teudons in Erethizon dorsatus l. Left fore foot of Sphingurusprehensilis (superficial dissection). There were three luinbricales in Hystrix and Erethizonfour in Sphingurus. The Chinchillidae have no slip to the thumb and four luinbricales. In the Dasyproctid® there is no slip to the thumb and three luinbricales. In the Caviida) the arrangement is the same. In the Sciuromorpha there are four tendons in Sciurus, Pteromys, aud Arctomys, but Xerus and Castor have live. The number of the luinbricales in Rodents seems liable to individual variation, as a rule the one on the ulnar side is larger than the rest and rises from the front of the flexor profundus before it divides. Pronator Quadratics.—This muscle is usually well marked, 1 P.Z. S. 1882, p. 271. [17]](https://iiif.wellcomecollection.org/image/b2238635x_0021.jp2/full/800%2C/0/default.jpg)
