108 The American Geologist. Feb. isoo. 
which they rest, and forming a .short introduction to botli subjects. 
It is written in a simple manner, free from abstract technical terms, 
and well supplies the want of the general reader interested in science. 
The descriptions and figures of the mollusca, from the region of the 
Ohio falls, are scattered in various publications and almost out of 
reach of the palaeontologist. The author has gathered this widely 
dispersed material, and, with but few exceptions, redrawn all figures 
from the numerous and finely preserved fossils of his cabinet. To this 
he has added the new material obtained during long years of collecting, 
making the volume a monograph of exceeding value. It is illustrated 
by 36 lithographic plates, containing 220 species, of which 43 are new. 
Contributions to Canadian Palxontology, Yol. i, Partii. J. F. Whit- 
eaves. Montreal, W. F. Brown & Co., 1889. 
In this part Mr. Whiteaves continues his investigations upon the 
Canadian (almost exclusively invertebrate) palfeontology. In article 
2, '"On some fossils from the Ham.ilton of Ontario, etc." there are 
described the following new species — two crinoiJs, Homocrinus crassus, 
and Dolatocrinus canadensis and one doubtful Megisiocrinus species, 
one doubtful blastoid Fentremilidea filosa, two brachiopods Lingula 
thedfordensis and Spirifera subdecussata, one gasteropod Platyostoma 
plicatum. A list is also given of all the known species from the Onta- 
rio Hamilton as follows : 
Spongiae 
g- 
1. s. 1. 
Brachiopoda 
g- 
16. 
s. 
41. 
Anthozoa (Alcyonaria 
g- 
2. s. 5. 
Lamellibranchiata 
g- 
2. 
s. 
2. 
(Zoantharia) 
g- 
14. s. 31. 
Gasteropoda 
g- 
3. 
s. 
8. 
Hydromedusae 
g- 
2. s. 3. 
Pteropoda 
g- 
1. 
s. 
1. 
Crinoidea 
g- 
7. s. 9. 
Cephalopoda 
g- 
2. 
s. 
3. 
Blastoidea 
g- 
5. s. 5. 
Crustacea (Ostracoda 
)g. 
1. 
s. 
1. 
Vermes 
g- 
6. s. 13. 
(Trilobita) 
g- 
2. 
s. 
3. 
Polyzoa 
g- 
12. s. 21. 
Pisces 
??• 
1. 
s. 
1. 
In article 3, "Fossils of the Triassic Rocks of B. C," nine new 
species are described, two brachiopods, Spiriferina borealis, Terebratula 
liardensis; three lamellibranchs, Monotis oralis, Halobia occidentalis, 
Trigonodus ( .'') productus; one gasteropod, Margarita triassica, four 
cephalopods. Nautilus liardensis, Popanoccras mcconnelU , Acro- 
chordiceras (f) carlottense, Trachyceras canadense; Hyatt's new genus 
{Arniotites) is described at length. 
In article 4, "On some Cretaceous fossils from B. C. the N. AV. Ter- 
ritory and Manitoba" one new lamellibranch, Astarte carlottensis is 
described from B. C, two brachiopods, Discina pileolus, Terebratula 
robusta; two lamellibranchs, Cyprina yukonensis, Lima perobliqua; 
three cephalopods, Schloenbachia borealis (f), S. gracilis, Placenticeras 
glabrum; one phyllopod, Estheria bellula, from the N. W. Ter. and 
Scrjnda semicoalita (Vermes) Modiola tenviscidpta,^ BelemniteUa man- 
^ According to Mr. Whiteaves this species appears to be closely 
related to VolseUa mnltilinigera, Meek, from the Cretaceous of Utah, 
the umbonal slopes in the former being more broadly rounded and the 
anterior extremity more greatly prolonged beyond the beaks. 
