Recent Puhlicafions. 267 
MtKnourl <TeiAo(jiciil Surn-i/, Vol. V. PaUontnlof/i/ of Missouri. (Part II). 
By Cu.\RLKs Koi,i.ix Kkyks, State (Jeolonist. Pp. 2G0, with ;{2 plates. 
Jt'fforsoii City, lSi>t. This volume, which continues the plan be-fun by 
part I, treats of the poly/.oans, brachiopods, lamellibranchs, gasteropods, 
cephalopods, and vertebrate.s. The two volumes constitute a useful cat- 
alogue by means of which witli the aid of the plates, which are e.vcel- 
lent, most of the fossils of the state can be referred to their stratigrapliic 
and geographic places. The future investigator will find this compend 
a necessary ;vfrft' ?/if3'''</M for guidance to the principal literature. The 
work does not aim to be anything more tlian a synopsis of the present 
knowledge of the jjaleontology of th(( state. It remains yet for the Mis- 
souri survey to enter upon the real investigation of the j)aleontology of 
the state. This gathering together and classification of what is known 
already is the n<;cessary first step to such ;in investigation, and has a 
wide usefulness, jicr xr, should the work tro no further for many years. 
N. H. W. 
Beitrdije xnv Kcniitnii^x der Odtfiniy Oxyrhiiid. Wy Ciiakles R. East- 
man. (Paleontographica, XVI l^and, i)p. 149-192, Taf. xvi-xviii.) 
This excellent monograi)h is in direct line with the tendencies of the 
better class of recent paleoiitojogical work, which on the geological side 
deals with faunas as an aid to deiailed stratigraphy, and on the biologic 
side lays particular stress uijon the careful revision of work already done, 
thereby aiding morphological iiKpiiry, and enabling tlie phylogenetic 
history of living zoological grou[):s to be made out with greater accu- 
racy. Minute study of ancient organisms from this standpoint leads to 
a philosophic insight and to a keen discrimination of morphological fea- 
tures which are entirely lost siglit of when th<' description of anew spe- 
cies is made the chief result of a consideration of fossil forms. 
Oxyrhina comprises a widely known group of sharks, the triangular 
leeth of which are jtrobabh' more familiar to the popular mind than 
any other fossils. After a liistorical introduction and a very full list of 
the older allusions to the fossils, there is given a full account of the char- 
acters and occurrence of the [)iincipal form, O.nmntdli of Agassiz. 
The systematic consideration of the various species which are now re- 
garded as belonging to the genus is especially helpful and shows a num- 
ber of important changes in nomenclature. \ list of synonyms and 
their i)roper references follows; also a table of tiie geological distribu- 
tion of the known species. The three plates accompanying the memoir 
illustrate lucidly the ditl'erent anatomical characters of the forms. Pal- 
eontologists are under great obligations to Dr. Eastman for working out 
so carefully this long neglected grou[). Il is uude-rstood that the author 
is now at work in the Museum of Comparative Zoology at Cambridge 
on other groups of fishes. c h. k. 
RECENT PUBL ICATIONS. 
f. Corcrmni-at and State lif ports. 
Third Ann. Kept, of the l'.\ireau of Mines, Ontario. 20.") ()p.. Toronto. 
l.Si»4. 
