141 



657. The flirtihm of the trunk and part of those of the tail of a small 



( Ml. M|IIS (Cydodtu tcincotdfs; Lncrrta tciiicoidt*, Shaw). 



The plrurapophyse* appear to commence ( the fourth vertebra, and, with those of the 

 fifth and sixth vertebne, are abort, broad and flat ; the latter expanding at their free extre- 

 mitie*. The rib* of the seventh and eighth vertebras are long and slender, but false or 

 floating ; those of the ninth vertebra are articulated to a sternum by slender emiossified 

 ha*mapophyse*. The coctal arches of the four succeeding vertebra are similarly complete, 

 Mid articulated with the sternum or its xiphoid appendage ; the hermapophyses of the four- 

 teenth vertebra unite with each other, but not with the sternum. After the thirty -second 

 twUbia the ribs rapidly decrease in (tie to the sacrum ; this consists, as usual in Lizard . of 

 two Tertebne characterized by short, thick, anchylosed ribs, which are confluent with each 

 other at their free extremities. The centrums of the two sacral Tertebne have coalesced, but 

 the hinder one presents a ball to the first caudal vertebra. Each centrum presents two vas- 

 cular perforations on its under surface, and the articular ball is in the state of an epiphysis in 

 most. The axis and three following vertebnr have hypapophyses. The neural spines snoti 

 subside to mere ridges. The clavicle* are broad, and perforated at their lower half. Tlu 

 episternum has the form of a cross : the broad arch formed by the anchylosed scapula and 

 coracoid presents two deep anterior notches, and a small, transverse perforation. Tin- ilium. 

 ischium and pubis have coalesced on each side. The caudal hannapophyses commence at 

 the inferior interspace of the third and fourth vertebne. 



/lunferiaM. 



658. The skull of a small Scinooid Lizard of Australia (Cyclodu* tcincoutet). 



The anterior teeth are small and obtusely conical ; the hinder ones have hemispherical 

 The dermal ossifications which form the scutes upon the integument of the body 

 with the upper surface of the parietals and frontal*, and render that surface irre- 

 gular and ragged. 



659. The facial part of the skull and the lower jaw of a larger species of Australian 

 Scink (Cydodiu yiyat). 



The Tomerine bones are much longer than in the preceding specimen : the palatines are 

 d, and abut against the back part of the alveolar process of the maxillary 



and the ectopterygoids. The right ramus of the lower jaw is divided into three parts, to 

 show the mode of union of the dentary, coronoid. and iplenial pieces, and that of the coro- 

 noid, articular, angular, and snrangular. 



H*ttrian. 



660. One ramus of the lower jaw of the Cyc/odiu giga*, partially disarticulated ; the 

 dentary, angular and splenial pieces being separated from the articular and 



