4 Triassic Echinoderms of Bakony. 
Institute in Budapest, have all been visited for the purposes of this 
work, and to the authorities and officers of those museums my warmest 
thanks are here tendered. To incorporate in this memoir all the results 
obtained from the study of pre-existing collections would have been to 
depart too far from its professed subject. Those not directly utilised 
here may perhaps find publication elsewhere. 
It will probably be said that, even as it is, this memoir is too 
long, and that the descriptions might have been condensed with advantage. 
To this it may be replied: first, that those unwilling to study the 
descriptions can read the diagnoses, which are short enough; secondly, 
that previous work suffers from the entire insufficiency of the descrip- 
tions when tested by modern needs, as well as from a lack of enlarged 
and detailed figures. Lists of fossils drawn up in reliance on descrip- 
tions and figures have often been used for the determination of horizons, 
and sometimes for the elucidation of vast tectonic problems. If those 
lists may be judged by the names of Triassic Echinoderms which they 
contain, they are seldom of much value. The stratigrapher of to-day 
cannot hope for sure results without help from the most refined and 
detailed palaeontological research. For expressing the results of this 
research a strict terminology is also necessary, and the endeavour to 
provide this has occasionally led me into discussions that may appear 
elementary. Certainly that is what they ought to be. 
In addition to the purely systematic descriptions of genera and 
species there are scattered through the memoir observations bearing on 
morphology and phylogeny. These, as well as the general faunistic and 
stratigraphical results, are briefly summarized in a concluding chapter. 
Only one more remark absolutely demands insertion here, and that is 
an expression of my hearty thanks to Professor L. pe Loczy for entrusting 
me with these interesting fossils, for his extreme forbearance in the 
matter of time, and for many acts of kindness to me during the pro- 
gress of the work. Above all must be mentioned his permission to me 
to keep for the British Museum the specimens that remain after furn- 
ishing a set of originals to the Geological Institute at Budapest. 
London, June, 1909. 
