Revietr of Recent Geohxjicdl LUeratare. 141 
Part I contains '•Introduction " and a "Brief review of the study of 
the Upper Devonian in New York." Under this heading the author 
gives a short summary and classification of the Upper Devonian as de- 
scribed by previous workers. Fig. 1, which closes the "first part," is 
made to represent three sections in the Upper Devonian, in different lo- 
calities in New York state, giving the division of each and their correla- 
tion. (Naples section, Clarke. Ithaca section, Williams. Chenango 
valley section.) 
Part II gives a detailed study and description of the sections made in 
and around Ithaca, with a list of the genera and species found in each 
section, closing with a "Table showing the range of some of the species 
of the Portage and Ithaca faunas at Ithaca, N. Y." This table is based 
on four sections in which the Spirifer Imvis zone has been ascertained, 
as the author states, and is so arranged that the vertical range of each 
species in the group is referred to the Spirifer Ice vis bed of the Portage 
group. 
Part III gives a "List of species occurring in the Portage and Ithaca 
groups, and a list of species given by others in the 'typical Chemung.' " 
Part IV contains summary and partial bibliography. 
The most important facts jjoiuted out by the author in his study of 
the Itaca group are first, four faunas are represented in this group. 
Secondly, the extent in "vertical range of some of the well known 
species" of the group faunas and the more definitely determining that 
of others. Ghjptoctu'dia upeciosa and Limal ieardiam fragile, two of the 
most aVjundant and characteristic Portage species, were found in the 
Ithaca group. The finding of a second Spirifer Icevis bed located 110 
feet below the zone at base of Ithaca falls. "The number of recur- 
rent Hamilton fossils previously known from the Ithaca group has been 
increased by the discovery of some additional species," which are Plin- 
eops rana, Orthis vanuxevii, Modiomorpha mytiloides, Nuculitea tri- 
queter, Strophodonta perplana, Phthoaia cylindrica. 
Thirdly, a compari.son shows that nearly all of the typical Portage 
Mpecies occur in the Ithaca fauna and some of the most abundant Ith- 
aca fauna occur in the Portage, e. g., Cijrtina hamiltonensis and Stro- 
phodoiita mucronatd. 
Fourth and lastly, a close relationship is found to exist between the 
faunas of the Ithaca and Chemung divisions, but not to the extent as 
between the Ithaca and Portage. The author concludes by stating, 
that because of the close relationship in the two faunas the Ithaca di- 
vision should be classed in the Portage epoch. 
Two new species are figured and described by Mr. Kindle, viz., Bel- 
lerophon ithacensis, n. sp., Avicidopecten lautus, var. ithacensin, n. 
var. T. L. w. 
