. On the anatomy of vertebrates [electronic resource] . ^-TvXss&^^>t2fc*t^RIK^L cheek-pouches in Geomys bursarius, everted and in- Cheek-pouches of the Canada Hat {Geomys bursarius). „ , , UBe p0ULllbh flated : a more natural view of this buccal appendage is given in the dissection, fig. 300, ofthe head of an African pouched rat. In this species (Sacco-stomus lapidarius, Peters) an orifice at the angle of the mouth leads to the pouch, widening fromthe orbit to the lower border of themandible, and reaching back as faras beneath the ear. In the Ham-ster (Cricetus) the wide orifice ofthe pouch
. On the anatomy of vertebrates [electronic resource] . ^-TvXss&^^>t2fc*t^RIK^L cheek-pouches in Geomys bursarius, everted and in- Cheek-pouches of the Canada Hat {Geomys bursarius). „ , , UBe p0ULllbh flated : a more natural view of this buccal appendage is given in the dissection, fig. 300, ofthe head of an African pouched rat. In this species (Sacco-stomus lapidarius, Peters) an orifice at the angle of the mouth leads to the pouch, widening fromthe orbit to the lower border of themandible, and reaching back as faras beneath the ear. In the Ham-ster (Cricetus) the wide orifice ofthe pouch is just within the com-missure of the short lips: the bagitself extends along the side of thehead to the neck. The orifice has asphincter, and from this there diverge longitudinal fasciculi back-ward over the wall of the cavity, which is also provided withfibres from the dorso-lateral panniculus carnosus : these tending toretract the pouch-walls, while the others draw them forward, andboth combining to empty the pouch. Saccomys and Spermophilus. 300
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Keywords: ., bookcentury1800, booksubject, booksubjectbirds, booksubjectfishes
