INTRODUCTION. 
Ecliin. 7 
genera Ophiogyptis and Astrochalcis. Bather (21) describes a new 
Devonian Ophiurid Sympterura. 
There is much to oe said for Minckert’s (213) establishment of a new 
genus Decametrocrinus for the species of Promachocrinus with simple 
arms, and something to be said for his new family Decametrocrinidae ; but 
one is curious to know what he will find to say in favour of his Orders 
Eleutherocrinoidea and Stylocrinoidea , which resuscitate an idea that one 
had thought dead and buried. But even Palaeocrinoidea and Neocrinoidea 
are still in the text-books. If the long obscure genus Cleiocrinus still 
remains a puzzle, this is not the fault of Springer’s masterly description 
(306) ; it is noteworthy that his appeal to Cisatlantic phylogenists was 
independently answered in almost the same sense by two of them. 
Mignon Talbot (312) publishes interesting and well-illustrated notes on 
several Lower Devonian crinoids of New York, but still fails to straighten 
out Melocrinus and Mariacrinus. Equal confusion attaches to Cyathocrinus 
orjiatissimus , a figure of which adorns the cover of the Geological Report 
of the Fourth District, N.Y. (1843). The original material contained two 
distinct species of dicyclic inadunate crinoids with pinnulate arms, which 
in species A are heterotomoiis, but in species B bifurcate only once. 
J. M. Clarke in a memoir ( If ) published two years ago, but not yet seen 
in this country, appears to have regarded a specimen of B as the holotype 
of C. ornatissimus. Whitfield (339) however has little difficulty in 
proving that the holotype was a specimen of A, which he agrees with 
Jaekel to place in Cosmocrinus. For B, Whitfield establishes the new 
genus M aragnicrinus, which seems intermediate between the Silurian 
Oothocrinus and the Carboniferous Scytalocrinus , to which latter Clarke 
{If & 57) referred the genotype. Continuing his researches on the fossil 
Echinoderms of Stramberg, Remes (269) describes a curious new genus, 
Pseudosaccocoma. Benecke’s fine monograph on the fossils of the Iron- 
ore formation of Lothringen and Luxemburg (29) describes an Isocrihus 
known as Pentacriniis personatus. 
A Professional Paper on Lead, Zinc, and Fluorspar deposits is the 
hiding-place chosen by Ulrich (321) for valuable notes and excellent 
figures of Carboniferous Echinoderms including some new Blastoids. A 
new writer G. H. Hudson (144) has published some admirable descriptions 
of interesting Ordovician crinoids and a cystid. Among problematica 
one mentions pour m'emoire the Astrechinus of Jaekel (145) though he 
has not yet published the description. 
The following table gives the numbers of the new names proposed in 
the works indexed. 
New 
genera 
Altered 
generic 
names 
New 
sub- 
genera 
New 
species 
New 
varieties 
Holothurioidea 
10 
0 
0 
68 
8 
Echinoidea 
12 
1 
1 
81 
4 
Asteroidea 
6 
0 
2 
86 
2 
Ophiuroidea 
3 
0 
0 
64 
1 
Crinoidea 
3 
0 
0 
15 
0 
Cystidca 
Blastoidea 
0 
0 
0 
0 
0 
0 
1 
5 
0 
1 
Incertae sedis 
1 n.n. 
0 
0 
0 
0 
Total 
34 + ln.n. 
1 
3 
320 
16 
Further remarks by me are placed in [ ]. 
F. A. BATHER. 
December , 1906. 
