Geology and Natural History. 405 
that the anomalous Amphioxus, which Heckel refused to admit 
those which answer to the enki dura, and the optic nerve are 
Vertebra th 
pee ae by those segments of the bo saat of Amphiowus which 
in front of the fifteenth, counting from before backwar d 
thet cranial nerves by the corr esponding anterior pairs of nerves. 
No auditory apparatus was tien name, but ‘in all msec 
Tespects nae conforms to the Vertebrat e type;” and, 
considering its resemblance + the early stages of Petromyzon 
os tie by Sabelse: there is no reason for removing it from 
class Pisces. On account of its peimntnbathy segmented skull 
and its many other peculiarities, Prof. Huxley regards it as the 
type ofa rimary bo ri which he names Fibouvernth, other 
sch being Holocrania. 
Zoological Station at Naples.—Dr. Anton Dohrn has issued 
a Criatowue of the Library of the Jang 08 station at Naples. 
. 
As a | 
and anatomical work marine e animals, it forms an admirable 
nucleus for the building up of a great zoological library. It 
e 
working naturalists to supply the station with everything pub- 
lishe y on investigations in every department of 
zoology. Dr. Dohrn is anxious to secure the co-operation of 
American naturalists ee hopes that they will remember the 
coe station in the distribution of their papers A. A. 
ds of the Northwest: a hand-book of the Ornithology of 
the Senin drained by the rorhiietee River Dae its tributaries ; by 
Ettiorr Cours. 8v0, 791 pages.—This volume forms part of t e 
miscellaneous publications of the United Bae Geological survey 
of the Territories, under Dr. Hayden. It includes quite full syno- 
nyms of all the species and varieties belonging to the region, 
many valuable descriptions of the habits, geographical 
roe sate and variations of the species. The ilies oon 
with elaborate maps, and woo oodeuts of gy ae — e pu 
lished by Messrs. Macmillan. — Atheneum, Feb. 
* Die Bibliothek der zoologischen Station zu Neapel, Verzeichniss der daselbst 
bis zum Ende des Jahres 1873 vorhandenen Biicher. Leipzig. 8vo., pp. re 791. 
1874. Wilhelm “acc 
