252 



REPTILIA 



CLASS III 



vertical. Probably four sacrals, and at least thirty caudals present, some of 

 the latter with chevron bones. Scapula and coracoid fused. First digit of 

 manus represented by a styliform ("pteroid") bone, and first wing phalanx 

 shorter than the antebrachium. Ischium large, distally expanded. The first 

 four clawed digits of the pes are normal, and the fifth divaricated ; the latter 

 with an attenuated metatarsal and two phalanges. The skull of D. macronyx, 



ZfilMnipliorhniwhus gcmmingl, v. Meyer. Lithographic Stone; Eichstiidt, Bavaria. A, Orbit; I), Antorbital 

 vacuity ; N, External uarial opening ; piiu, Premaxilla ; /•, Rib ; .S', Lateral temporal vacuity ; S', Supratemporal 

 vacnity ; st, Sternum. 



Owen, the only described species, attains a length of 20 cm. Lower Lias ; 

 Dorsetshire. 



Dorygnathus, Oppel. L'pper Lias ; AYiirtemberg and Franconia. Ehampho- 

 cephalus, Seeley. Bathoniau ; Stonesfield, England. Imperfectly known genera. 



Cmnpylognathus, Plien. Known by a complete skeleton from the Upper 

 Lias of Holzmaden, AViirtemberg. Skull less deep than in Dimoiyhodon, 

 toothed to the extremity of the jaws ; the anterior tooth above and the first 

 tAvo below large and recurved. Mandibular rami toothed nearly to the 

 extremity, which is deflected downward. Narial opening larger than the 



