Type of the Genus Massosjmndylus. 10;{ 



referable to one individual. The pro^cnce of portions of 

 tlirce pubic bones of diirerent sizes indicates at least three 

 individuals ; but those bones show no divergence of character. 

 There are three vertebra*, which are of different type froui the 

 majority of the remains, and probably belon;^ toother species. 

 Most of the bones, however, are referable to the species 

 Massospondiflus otrinatus. The early dorsal vertebrae, of 

 which the centrums are preserved, have, wIkmi taken bv them- 

 selves, enough resemblance to the Teleosaurian type toex[)Iain 

 Sir R. Owen's recognition of a Teleosaurian atHnity. But 

 the pubis of Zancloiion, which I examined in 1878 at Stutt- 

 gart and Tubingen, proved to be identical in type with Maiso- 

 sj)ondi/his, and therefore fixed the systematic position of the 

 genus among the Megalosaurian ISaurischia. Some other 

 ])arts of the skeleton approximate to Zanclodon, but the 

 differences are considerable. Tiie ilium conforms to the 

 Triassic type, as represented by ZanclodoUj Ae/osaurus, &c., 

 in having the vertical plate of the bone high and more deve- 

 loped posteriorly than anteriorly ; but it does not develop 

 descending pedicles to give attachment to the pubis and 

 ischium, approaching in this respect to the type of Cetio- 

 saurus. 



My conclusions also diverge from the College of Surgeons 

 Catalogue in the following osteological determinations. The 

 vertebrte of Massospondylus carinatusj which were regarded 

 as probably from the tail, I believe t > be cervical, from tlieir 

 resemblance to the cervical vertebiie of Zunclodon. Tlie 

 dorsal vertebrae show a similar affiuity. It seems to me not 

 improbable that the caudal vertebras named Pac/ii/spondylus 

 Orpeui are the tail of this species of Massospondi/lu.i, though 

 ^ it is impossible^ in the absence of history of the sjiecimens, to 

 make the identification with certainty. There is one sacral 

 vertebra, which Professor Owen rocognized as having some 

 Dinosaurian characters. It is the only evidence ot the sacrum 

 preserved. There is a close resemblance in form between 

 the ischium and scapula in animals of this type. The bone 

 349, regarded as a left scajjula, seems to me to be the ischium ; 

 no. 850, termed upjjcr part of the same scapula, I regard as 

 distal end of the same ischium. A similar bone, ii'jd, is 

 named ischium; another example, '657, was referred with doubt 

 to the proximal end ot the humerus. Tiie bone '65i, named 

 lower end of left scapula, I regard as the proximal end of the 

 pubis; and the bone 852, which is compared to the scapular 

 end of a right coracoid, is also the proximal end of a pubis. 



Pachi/spondi/lus and Leptospondylu.s, in the absence of 

 further evidence of their characters, nuiy be heli for the 



