. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Brain of Stenops tardigradus. {After W. ;) lutions, the shallow anfractuosities, the scarcely indicated jbssa Sylvii, the not prominent pans Varolii, the very thick cerebral peduncles (crura cerebri), the want of corpora candicantia, the short corpus callosum. In all these points the brain of the Slenops is inferior to that of the monkeys, from which Stenops differs also by more imperfect intellectual faculties. For the organs of sense, I mention princi- pally the interesting existence in the Stenops, of the t
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Brain of Stenops tardigradus. {After W. ;) lutions, the shallow anfractuosities, the scarcely indicated jbssa Sylvii, the not prominent pans Varolii, the very thick cerebral peduncles (crura cerebri), the want of corpora candicantia, the short corpus callosum. In all these points the brain of the Slenops is inferior to that of the monkeys, from which Stenops differs also by more imperfect intellectual faculties. For the organs of sense, I mention princi- pally the interesting existence in the Stenops, of the tapelum lucidum in the eye, by which the animal acquires the faculty of reflection of the light, improperly called phosphorescence of the eyes. In general the sensibility of the eye to light is very exquisite. Therefore most Lemurina; are nocturnal, and see very well in almost profound obscurity, as is proved by the observations of F. Cuvier, in the Lemur murinus. The ears of Stenops are very large ; the concha deep, the tragus and antitragus ele- vated, and instead of anthelix there are two prominent and almost parallel cartilaginous plates. The same development of the ear is observed in the genus Oto/icnus. This great development in a nyctalope animal is an inter- esting fact, principally by comparison with the Cheiroptera, in which the same disposition occurs. The tongue of the Stenops offers a strange structure in the existence of a cartila- ginous plate, by which it is supported, and the anterior margin of which is denticulated. ANGEIOLOGV.—I only know some peculiari- ties about the heart and the vessels of the Stenops. It has a rounded and plane form ; the right ventricule is scarcely longer than the left, and terminates in a rounded point. The right auricle is much larger than the left. The distribution of the trunks coming from the amis aort(B is as in the plurality of Mamma- lia, viz. three trunks coming from the a. inno- minata, and a separate left subclavian artery
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