1894. PROCEEDINGS OF THE NATIONAL MUSEUM. 349 



cipitals. In one of tlie specimens before me, the sutures between these 

 elements are quite distinct, also the suture between the basioccipital 

 and basisphenoid. The paroccipital ijrocesses of the exoccipital are 

 broad, not much developed, connected on the outside with the squamo- 

 sal and parietal, and touching the posterior slender i^rocess of the 

 quadrate. The basisphenoid sends processes on each side backwards, 

 over the basioccipital, joining the epiphyseal process between basioc- 

 cipital and basisphenoid. The basipterygoid processes of the basi- 

 sphenoidare well developed. The petrosal shows a long anterior process, 

 which nearly reaches the epipterygoid. The maxillary is in connection 

 with the premaxillary, nasal, frontal, prefrontal, supraorbital, lachry- 

 mal, jugal, ectopterygoid, vomer, and palatine. There are 5 maxillary 

 foramina, 2 above and 3 below; the number of teeth is 7, and they show 

 a groove on the anterior and inner side at the top. The prefrontal* is 

 slender, placed along nearly the whole lateral border of the fiontal, sepa- 

 rated from the parietal only by a slender posterior outer process of the 

 frontal ; the descending process of the prefrontal is well developed. The 

 prefrontal is in connection with frontal, supraorbital, palatine, and post- 

 fiontal. The postfrontal is small, in connection with frontal and parie- 

 tal, and the very small postorbital, which is attached to it at its pos- 

 terior and lower end. The frontal is therefore completely excluded 

 from the orbit; a condition which is found also in (Uinmcvleo, Heloderma, 

 Pi/gopus, and in Traehysanrus, Tyliqua of the Scincidic.t 



The supraorbital is a large bone, placed above the eye in the anterior 

 region of the orbit; it is in connection with the prefrontal and maxillary 

 as in Anguis. The lachrymal is very small, in connection with maxillary, 

 jugal on the outside, and the prefrontal on the inside. The jugal is a 

 slender element; it becomes ligamentous in its upper posterior portion, 

 where it joins the postorbital. It is in connection with maxillary, 

 lachrymal, and ectopterygoid.^ The conditions of these elements are 

 very much like those seen in Anguis. 



The squamosal [opisthotic, paroccipital. Cope; supratemporal, Par- 

 ker and Betany; mastoidien, Cuvierj is a small splint-like bone, stand- 

 ing on the quadrate and connected with the parietal, paroccipital, and 

 touching the petrosal. There is no trace of a quadratojugal (squamo- 

 sal, Parker; supratemporal, Cope).§ 



* Cope says — "The prefrontal is above the eye, and is cut off from the postfrontal 

 by an entrant angle only." Osteol. Lacert., p. 215. Instead of postfrontal it ought 

 to read parietal. 



tSiKBENRocK, Friedrich — Zur Keuntulss des Kopfskelettes der Scincoiden, 

 Anguiden und Gerrhosaurideu. Ann. K. K. Naturhist. Hofmus., vii, 3, p, 181, Wien 

 1892. 



tThe description of these elements and the figures given by Cope are not correct. 

 He states, p. 186, that the jugal in Anniella may include the lachrymal; and, p. 215, 

 "No jugal." No mention is made of the supraorbital. In the drawing it seems to be 

 indicated, but the prefrontal is not figured. All the drawings given on PI. ii are very 

 poor and quite viseless. 



i^S Cope states — No distinct supratem[>oral [(quadratojugal] or ijarocci2)ital [squamo- 

 sal]. 



