188 Bibliographical Notice. 
The elevation of the Cambridge Pterodactyles to a position equal 
to that of Birds rests ip inferences not well proved. Thus the 
structure of their heart is not known, but is inferred from the 
pneumatic condition of the bones (pp. 101 &e.) Pneumaticity, 
however, does not characterize some birds of the strongest flight, and 
the Bat is without it; hence Mr. Seeley’s argument that the Ptero- 
dactyles must have been hot-blooded cannot be supported by the 
fact that some birds are more or less pneumatic. Nevertheless we 
merely an adaptive Puente and of no great importance in a phy- 
siological point of vi 
e osseous bolus will not appear to every one so distinctly 
avian as it does to Mr. Seeley. With reference to the sternum, the 
Merganser is quoted as “a close ally” of the Pterodactyle ; but, 
judging from pl. 1. fi ay be said that the sternum has more 
8 to that of pis ae and still more to that of the Bat, 
which, indeed, may be ave a more avian tendency than the 
figured specimen. These aaia] resemblances are of little 
ue. 
Again, Mr. Seeley shuts off the Pterodactyles from Reptiles on 
account of the presence of the synovial notch in the sternum ; but 
the statement “ that only i in birds are distinct synovial cavities pro- 
vided for the Simon (p. 28), though connected with Owen’s 
name, will require modification ; for when the junction à coracoid and 
sternum exists in Reptiles, it always has a synovial jo 
ere is room, then, for further research in the affinitios of Ptero- 
dactyles. Mr. Seeley has done good work in arranging and charac- 
terizing the Cambridge monem in this very acceptable ERA 
raisonné, which bears evidence not only of the author’s kno 
industry and biological aa but of his talent for eire 
Mr. Seeley thus correlates his Ornithosawria. I. Pterodactyle, 
comprising :—Pterodactylus, Cuvier; Ornithocephalus, Scemmering ; 
oh nade quini Fitzinger ; and Cycnorhamphus, Seeley. II. 
hamphorhynche (Ra ee Von Meyer); 2. Dimorpho 
soe ee Owen); 3. Ornithocheire (Ornithocheirus, 
ley). 
The numerous figures in the lithographie plates are the work of the 
author's own pencil, and bear witness to his conscientious labour and 
enthusiasm ; but they are not artistically good, and some are stated 
to hav e been damaged in the repe guai will be of more use 
in identifying the specimens in the m i i 
accurate representation of p « detail to the odent at a 
distance. PPOR tja constitute a n! valuable and neces- 
sary adjunct 
Catalogue of te Woodwardian Muse 
o this portion of Prof. Sedgwick's projected great 
um. 
