876 MR. ST. GEORGE MIVART ON THE [ Dec. 6, 
upper part of the shaft of the femur, passing beneath what I have 
distinguished as the first part of the gluteus medius, and just below 
and slightly tibiad to the insertion of what I have called gluteus 
minimus. 

Deeper muscles of inner aspect of right pelvic limb. 
A, Adductor. B. Biceps. E' & E?. Extensores metatarsorum. £. L. Extensor 
longus digitorum. F' & F?. Rectus femoris. /. D'. Flexor longus digi- 
torum. G. Gracilis. G.#. Gastrocnemius externus. G.J. Gastrocne- 
mius internus. JZ. Iliacus. J. P. Ilio-peroneal. iS. Tibial adductor. S. 7. 
Semitendinosus. TZ. A. Tibialis anticus. V+. Vastus internus. 
Gluteus maximus (figs. 2, 17, & 27, X). This name has been 
applied by me in the Iguana*, Menopomat, and Menobranchusf, toa 
muscle which, on further consideration, seems to me can have little 
claim to it. On the other hand, I think that the muscle which I 
called pyriformis in the Iguana §, answers to the one I am now about 
to describe in the Chameleon, and which has a considerable resem- 
blance to that which I designated as gluteus maximus in theEchidna|. 
It arises, in Parson’s Chameleon, from the transverse processes of the 
more anterior caudal vertebrz, and is inserted into the tendinous 
arch which passes from the posterior margin of the ilium to the 
tuberosity of the ischium. It is blended posteriorly with the trans- 
versus perinei, and, but for the tendinous arch, would be continuous 
with the biceps, thus strongly resembling the gluteus maximus of the 
Echidna. 
* P.Z.S. 1867, p.-791. t P.Z.S. 1869, p. 270. 
¢ P.Z.8. 1869, p. 464. § P.Z.S. 1867, p. 793, fig. 15, P. f. 
|| Trans, Linn. Soe. vol. xxv. 1866, p. 391, pl. 53. figs. 2, 9, mx. 
