232 REPORT OF NATIONAL MUSEUM, 1898. 



cular space, and have a short external branch. The epipterygoid 

 leaves the pterygoid behind the ectopterygoid process, and articulates 

 with the parietal, passing some distance in front of the petrosal. The 

 petrosal is very short above; the subforaminal process is distinct, and 

 the inferior groove looks outward as well as downward. Quadrate with 

 wide external conch and no internal conch. Stapes not deeply sunk; 

 columella slender. The vomers are flat and elongate, and are not sep- 

 arated by a groove. The palatines are broad and flat, and the maxillo- 

 palatlne foramen is small. The pterygoids are broad and flat in front, 

 and are then abruptly contracted from the outside to a narrow poste- 

 rior part. This curves outward from the long basipterygoid processes 

 to the quadrate. The ectopterygoids are short and are deflected at the 

 X)roximal extremity. Presphenoid long and rodlike. Occipital condyle 

 convex, simple, without exoccipital divisions. 



The mandible has marked peculiarities. The Meckelian groove is 

 closed, and the splenial bone, if present, is minute. I do not detect it 

 in the A. varolinensis. There is a fossa on the inside of the ramus at 

 the base of the coronoid. The latter bone is developed much anterior 

 to its apex on the external face, and not posteriorly. The dentary is 

 produced far i^osterior to the coronoid. The angular and articular are 

 fused, and the angle is rather short and has an internal angular pro- 

 jection [XipJiocercus valenciennii, Anolis equestris, A. marmoratiis, A. 

 caroJinensis). 



The hyoid apparatus has the extreme development seen in all the 

 lizards with a gular compressed pouch or fan. That is, the cerato- 

 branchials of the second pair are closely appressed and produced to a 

 great length. First pair of ceratobranchials and ceratohyals simple, 

 the latter attached to the extremities of the moderately developed 

 hypohyals. 



The scaijular arch conforms to the Iguanid type. There is a pro- 

 scapula well above the coracoid, and a single coracoid notch. The 

 sternum has a small median fontanelle which is reached by the long 

 posterior limb of the interclavicle. Two ribs attached to each side of 

 sternum, and three to each of the slender, closely appressed xiphoid 

 rods. There are five x^airs of abdominal ribs in Anolis carolinensis^ and 

 four, five, and six in other species. 



The vertebra- have no zyosphen nor elongate diapophyses. There are 

 eight cervical vertebrae, of which only the last four have ribs, all of 

 which have simple heads, the last two being elongate and reaching to 

 the plane of the sternum. 



The caudal vertebrtie have no supplementary dividing suture, and 

 there is but one neural spine. The chevron bones are attached at the 

 extremity of the centrum. 



The pubes unite at an acute angle, and have well -developed pectineal 

 process at the middle of their length. The ischia have a prominent tuber. 



The premaxillary and anterior maxillary teeth are simple; the others 

 are tricuspid. 



