OCR Text |
Show 1877-] MR. A. H. G A R R O D O N T H I N O C O R U S A N D ATTAGIS. 415 deep plantar tendons are arranged as in Apteryx and many other birds in which the hallux is small, the flexor longus hallucis blending with the flexor digitorum profundus, at the same time that a slender slip is sent off from the inner side of the conjoined tendon to the hallux1. In the patagium of the wing a slender muscular fasciculus runs from the biceps to a little above the middle of the tendon of the tensor patagii longus-the tendon of the tensor patagii brevis being in two parts, of which the outer is the broader and stronger. Where this latter joins the extensor carpi radialis longus a fan-shaped fibrous expansion is sent off to the middle long patagial tendon, as in the Limicolse generally. The obturator internus muscle is very small and oval in shape. Both the right and left carotid arteries are developed in the two genera, which agree exactly in their myology. Skull of Attagis gayi. The lower larynx is simple, a slender muscle on each side running to the fourth bronchial half-ring, which, like the three above it, is deeper than the other bronchial half-rings, and more like a split tracheal ring. Osteolo°lcally the Thinoconnse present many features of interest. In his more recent communication " O n iEgithognathous Birds" 1 Vide P. Z. S. 1875, p. 341. |