. Outlines of zoology. pals. The ilia are greatly prolonged in frontof the acetabulum, the inner wall ofwhich is membranous. The pubes slopebackwards, parallel with the ischia;only in Struikio is there a pubicsymphysis, only In RJtea is there aniscbiac one. There are not more than four toes ;the proximal tarsals unite with thetibia, forming a tibio-tarsus; the firstmetatarsal if present is free, but thethree others are fused to one anotherand to the distal tarsals, forming atarso-metatarsus. _ There is but one aortic arch, to theright; the heart is four - chambered ;the blood sent to the body
. Outlines of zoology. pals. The ilia are greatly prolonged in frontof the acetabulum, the inner wall ofwhich is membranous. The pubes slopebackwards, parallel with the ischia;only in Struikio is there a pubicsymphysis, only In RJtea is there aniscbiac one. There are not more than four toes ;the proximal tarsals unite with thetibia, forming a tibio-tarsus; the firstmetatarsal if present is free, but thethree others are fused to one anotherand to the distal tarsals, forming atarso-metatarsus. _ There is but one aortic arch, to theright; the heart is four - chambered ;the blood sent to the body is purelyarterial. The body temperature is high andalmost constant. The optic lobes lie on the sides of thebrain. The lungs have associated air-sacs. The sutures between the bones of theskull are usually obliterated at an earlystage. The right ovary atrophies. CHELONIA. 613 Order Chelonia. Tortoises and Turtles General Characters.—The broad trunk is encased inbones which form a dorsal and a ventral shield, within the. Fig. 329.—External appearance of tortoise. prix
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Keywords: ., bookcentury1900, bookdecade1910, bookidcu3192, booksubjectzoology
