1892] 199 



[Cope. 



are coossified and the interorbital space is very narrow. Tlie pariefils are 

 coss.fied and there is no pineal foramen. The supraoccipital ose , 



a culated anteriorly, but is coossified wi.h the exoccipitals. No lachry 



Po s?rolV" n"'' '''''■ '"^ ""^ ^-^^^^^""^^ '^^ posleriorlyfve :S' 

 Postfrontal small, crescenlic ; no postorbital. No postorbital or si,n, 

 temporal arches. Parietoquadrate arch depressed f parocchiK In. 

 over the parietal at the inferior extremity. No jaga bone No o bi f 

 spheno.d; the olfactory lobes enclosed below by tJ.e / on al bone P ' 

 trosal produced beyond semicircular canal at the superior anterrr ani" 

 and wuhout the oblique crest such as is characterislic of Te G ^^oTit' 

 A subforammal projection and groove, the external wall of the groove as 

 promment downwards as the internal, so that the groove is open In fe 



"r'ove p"i? ^"f ^°' ''''''''' ^^^ "«^^ «f ^'-- length braie^; 



n axilhrv P "" Tl '^' "'''^' ""''"^ ^ J^««^"--^l P--- to he 

 maxillary. Pterygoids broad and flat in front, narrower posteriorly with 



intfiTeT"5;i?V^'''"-"; 'T''''''' ^^°^'^- ^'^^'-"^ a mrxiii; : : 



net t^l ;. ^^^^.^'P^^^"^S"'d« ^^ong.te. Sphenoid and basioccipita dis- 

 wh o'n T'' '''' ''°™ exoccipitals. Occipital condyle convex 



^Uhout exoccipital portion. Epipieryguid oblique, articulaL-^ below 

 posterior to ec.opterygoid process of pterygoid and above wi 1 "petrol 



to the r?d"i:^:av'"^'''t t"'"^' ""^^ ' ''''''' ^«-^' -^-'^ - - - 

 bone is In-' •°^^^' ^marginate. In the mandible the angular 



tenorly than posteriorly on the external face of the ramus. The dentarv 



r^ei ::; oov? 1 ': a'^'i:-;?: f 'T'^^'y ^-^ -^ -^--r^^- The 



present inolnrHno- 7 / V ^"''^ apparatus all the elements are 



p.esent, including a pair of elongate second ceratobranchials. There is 

 a^ftee process of the ceratohyal anterior to its junction with the h^;:! 



The scapular arch is much like that of the Gecconidse. The clavicle is 

 expanded and perforate proximally. The interclavicle is subcnic^or 

 M^Uh he hmbs connected by laminate expansion. There is a sn-r n o 

 scapuawhich is connected at its apex 'with the epicoraclir T oac id 

 thr el f ""^:»^'°^^^°^- Sternum without fontanelle, supporting 

 t^hree nbsand a ziphoid rod, which supports but one rib. No abdomi' 



Anoms Daudin. 



rJlr ^"^'"^''^S osteological description is taken principally from the A 

 Cfl'ro?i/t<??isjs, but ot!iprsn<-fi(.« wi,;^i, ti • , , ihb -a. 



Premaxil Hrv u i ) i ''^'' examined do not difl^-er from it. 



nofrl N 7 r "^ '"P'"^'* 'P^"«' ^"d no inferior spiue, but a 



notch. Nasals distinct, separated by premaxillary spine. Fron al and 

 parietal bones each undivided, the pineal foramen on L coroial future 



withjugal. Postfrontal small, distinct ; postorbital large. Supratem- 



PROC. AMER. PHILOS. SOC. XXX. 138. Z. PRINTED MAY 6, 1892. 



