30 INTESTINE AND DIET OF REPTILES. 



testine is short and straig-ht, its length only amonnting to about 

 30 mm. There is no trace of a ccocnm. The ileum opens 

 terminally in the colon and its walls protrude into the colic 

 cavity so as to form a 2 mm. broad valve ronnd the opening. 

 Otherwise there are no colic valyes. 



The ventricle contained elytra of betles, legs, wings and 

 other remains of diiFerent insects and some snails with crushed 

 shells. There was no vegetable matter visible. 



The general position and shape arrangement of the in- 

 testinal tract and its diiFerent parts, agree on the whole very 

 well with the same of the foregoing lizard, Cnemidopliorus 

 murinns, but there is a ver}'- interesting dilFerence in length 

 as may be seen from the following comparison. 



Small intestine. Large intestine. 



Ameiva umeica 110 28 



Cnemidopliorus murinus 168 46 



percentages of the length of 

 head and body. 



This difference stånds, no doiibt, in connection with the 

 difference in diet, the herbivorous form having a longer in- 

 testine. 



In the Tejid lizard Ophiognomon (or Propus) Cope has 

 observed a short coecum.^ 



Fam. Amphisbsenidse. 



Eliiueiira floridaii.i (Baird) Cope. 



Distance from snout to vent 227 mm. 



The ventricle reaches to a distance from the vent of 50 

 mm. It is straight all the way, only the pyloric opening 

 being directed^ to the right. The p^doric valve is well deve- 

 loped. The beginning portion of the small intestine is very 

 abrnptly widened at the pylorus and even projects in front 

 of the same in the shape of a comparatively wide but short 

 blind säck. The whole lenffth of the intestinal canal from 



^ The Crocodilians. Lizards and Suakes of Xorth America. Washington 

 1900. 



