6 Echin , 
XIV, ECHINODERMA. 
Lambert. Nominally monographing the Echinocorytidae ( — Ananchytidae) 
of Belgium, Lambert (176) discusses the family as a whole in his usual 
learned fashion, and his work should be welcomed by English palaeon- 
tologists. Rowe’s paper on the Chalk of Devonshire (276) contains many 
valuable notes on the Echinoderms. Lissajous (189) begins a catalogue 
of the Jurassic Echinoids of the Maconnais. Broili (25) describes the 
Echinoderms from a new Upper Triassic horizon in the Tyrol. A large 
number of Devonian and Carboniferous Crinoids and Blastoids, mostly 
from Indiana, are described by Rowley (114-119). 
IV. Systematic. Perrier (254) in his monograph of Atlantic llolo- 
thurioidea , mentioned above, proposes a new classification, which it is easy 
to see does not agree with his genealogical tree (quoted n, a, iii) ; most of 
the generic and specific names introduced by him as new have already been 
used and defined, either by himself or by E. Perrier, some as long ago as 
1886 ; Ymilothuria , as a correction of Hypsilothuria , has been used by 
Sluiter, but not formally indexed as a new name ; as really new there 
remains only Elpidiogone. Need one point out again that the attachment 
of “n. sp.” to a name already 17 years old is likely to beget confusion? 
Perrier (255) also describes two new species from New Zealand. Have- 
loclcia , a new genus allied to Colochirus y and a few other new species, are 
described by a welcome recruit, Pearson (250), who however omits 
measurements from his very clear plates and retains a classification long 
since rightly rejected. 
The amount of important work on Echinoidea is great. Meissner in 
Hamann (125) leaning chiefly on the work of Mortensen (229), supple- 
mented by that of Gregory (1900) and of Duncan, proposes the following 
Irregularia Cuvier 
Gnathostomata Zittel 
Holectypoida Duncan 
Pygastridae 
Clyjpeastroida Duncan 
Fibulariidae 
Laganidae 
Clypeastridae ( Clypeas - 
trinae , Arachnoidinae ) 
Scutellidae 
Atelostomata Zittel 
Aster nata Gregory 
Eehinoneidae 
Nucleolitidae 
Cassidulidae 
Sternata Gregory 
Spatangidae ( Adetinae, 
Prymnadetinae , Prym- 
nodesminae) 
Palaeostomatidae 
Urechinidae 
Ananchytidae 
Pourtalesiidae. 
Mortensen (229), without disregarding the accepted bases of classifica- 
tion, has attempted to push the analysis further by a study of pedicellariae, 
spicules, and plates of the buccal membrane, characters which, by reason 
of their very insignificance, are less likely to be affected by the homoeo- 
morphosis due to outer circumstance ; unfortunately they are almost 
wholly inapplicable to extinct species. He founds the following new 
genera : A canthocidaris, Histocidaris , Petalocidaris , Schizocidaris , and 
classification of recent forms : 
Regular ia Cuvier 
Endobranchiata Bell 
Cidaridae 
Ectobranchiata Bell 
Streptosomata Duncan 
Eckinothurida.e 
Stereodermata Keeping 
Saleniidae 
Diadematidae 
Phymosomatidae 
A rbaciidae 
Stomopneustidae 
Temnopleuridae ( Temno- 
pleunnae , Glypkocy- 
phinae) 
Echinidae ( Parechininae , 
Echinae) 
' Toxopneustidae ( Schiz - 
echirdnae, Strongylo- 
centrotinae , Parasale- 
ninae ) 
Echinometridae. 
