The portions of the alimentary canal preserved consist of the greater portion of the stomach, three coils or loops of the small intestine, the rectum, and a pit which undoubtedly represents the anal opening. The anus is found at a distance of 16 mm. from the tip of the tail and is somewhat removed from the body portion, as in modern salamanders. On each side of the posterior end of the rectum there occur a pair of enlargements which probably represent the oviducts at their posterior ends (fig. 15, C). [Illustration: MOODIE PLATE 3 1. The larger specimen of _Eumicrerpeton parvum_ Moodie. × 1. 2. The smaller specimen of _Eumicrerpeton parvum_ Moodie. × 1. 3. Type specimen of _Erpetobrachium mazonensis_ Moodie. × 1. 4. Type specimen of _Erierpeton branchialis_ Moodie. × 1. 5 and 6. Type specimen of _Mazonerpeton longicaudatum_ Moodie. × 1. 7. A copy of Cope's drawing of the type specimen of _Amphibamus grandiceps_ Cope. The original was destroyed by fire. × 3. ] The tail impression is more acuminate than in _Micrerpeton_, but shows the same structures as in that form, _i.e._, the lateral lines which have already been mentioned. _Micrerpeton_ was a more rapid swimmer than the present form on account of the greater development of the tail. The second specimen of the species (No. 802, Yale Museum) shows much the same character as the specimen already described, except that there are impressions of small, blunt teeth on the mandible. The two humeri and the femur of the left side are preserved and the interclavicle is represented by an identical impression, as in the first-described specimen. The tail impression, though similar in form, does not exhibit so much of the structure of the lateral lines (fig. 15, B).