摘要
本文论述了东疆沙蟒的骨骼系统.其鼻骨长与额骨以纤维结缔组织相连接。舌骨退化仅残留两条舌骨后角。腭罩以结缔组织及韧带悬挂在脑颅下,上颌骨齿每侧各10枚,翼骨齿各4枚(少数个体5枚),腭骨齿各4枚,下颌骨则各具12枚,均为端生齿。椎骨数为233～237枚,其中躯干椎201～211枚,尾椎26～36枚,尾椎骨椎体向后逐渐缩短,末端3枚愈合。后肢留痕迹器官,髂骨和股骨均为扁平薄片状,远端以韧带与爪状鳞相接。
This paper reports the anatomical results of the skeletal system of Eryx orentalis-xinjiangensis. The essential characters are identical with those of other Eryx. Some differences in skeleton are revealed, however, based on comparison with other species of the Eryx. The characters which are considered to be primitive are as follows:1. The premaxillary bone is divisible into a thickend horizontal plate or body, two premaxillary processes are extended ventrocaudally to the vomer.2. Maxillary, palatine, ptcrygoid and ectoptergoid bones are suspended to the quadrate bone and exhibited movabb-articultions. Anterior maxillary and mandibular teeth are the longest. Than gradully decrease their size. There are 10 teeth in maxillary bone, 4-5 teeth in pterygoid bone, 4 teeth in palatine bone and 12 teeth in the mandible.3. There are 233-237 vertebrae. The tail is very shart. The number of coccyx of the male 36 and the female 26.4. The pelvic girdle and the hind limbs exhibit the rudiment. The end likes a claw spur.5. Two cartilaginous bars arc formed from rudimentary hyoid bone.
关键词
东疆沙蟒
解剖
骨骼系统
Eryx orentalis-xinjiangensis
anatomy
skeletal system
