Mineralogy and Geology. | 113 
t the end of the —— there is a copious glossary of scientific 
oo followed by the index, and a neatly engraved section of the rocks 
seen along the i from the northern boundary of the State to 
Jair 
This volume “hit throughout that the survey of the State, so rich in 
ing may prevent the onward progress of the survey to its final comple- 
tion, and the penal of all the results. The publication of such 
reports not only advances the material interests of a State, by spreading 
useful information oes e people, but by inviting capital, enterprise 
and emigration from other parts of our own country and from abroad 
2. ala he to the Paleontology of Illinois and other Western 
States; by F. B. Mezx and A. H. Wortuen, of the Illinois State Geolog- 
ical Survey. (Proceed. Acad. Nat. Sci. Philad. , July, 1866, p. 251.)—This 
paper contains descriptions of the following me species te genera of 
fossils from the Carboniferous rocks of the West :—Belemnocrinus Whitii 
ynbathocrinus Wachsmuthi (type of a new pothenes Nematocrinus), 
Cyathocrinus Farleyi, Rhodocrinus nanus, Onychocrinus diversus, Grana- 
tocrinus Shumardi, Scheenaster Wachsmuthi, Preria (Pterinea ?) Morgan- 
ensis, eipaalg micronema, Platyceras abe PE atyceras haliotoides, 
eto Murisonia inornata, and Nautilus (Cryptoceras) Rockfordensis. 
It also contains notices of two new genera of Crinoids, which are more 
fully described and illustrated in the second volume of the Illinois report. 
The first of these genera, Strotocrinus, is Bone for those iar ex- 
arm-like se ie covered all the way out by small pieces like the 
vau sn bearing the true arms along their lateral ae 
The authors likewise make some remarks on Onychocrinus of Lyon & 
Casseday, which they think most probably a tg genus, ovens it has 
generally been regarded as a synonym of Forbesiocrinus ; ee 
aor Platyceras Conrad, which they think more res allied | the, : 
ecent genus dip Sota than has been supposed in t is con ough 
still Palen, distin we 
JOUR. Apis Series, Vou. XLII, No. 127.—JaN., 1867. 
15 
